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Discussion of precise voltage measurement

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Re: [volt-nuts] volt-nuts Digest, Vol 124, Issue 5

RB
Rick Bale
Fri, Mar 27, 2020 11:47 PM

David, I went to double check if I physically have 2564 or 2764 and I
discovered all the ROMs were in the wrong spots but not backwards like the
ram chips earlier.  Wow.  I corrected my TMS2564JS ROMs according to what
looked like original stickers. I rebooted and had for the first time a
continuous beep.  The LEDs all stayed on with a dead screen.  I shut it
off. On second boot the beep was gone but the front panel was the same.
Overall no improvement.  The physical chip numbers match the schematic's
part number.

I ordered the MiniPro TL866CS USB in the Plus version to burn the ROMs. It
will arrive on 4/1. Is it worth it to erase/reprogram the same ROM or
should I just replace/program them.

Rick


Message: 1
Date: Fri, 27 Mar 2020 10:22:27 -0000
From: "David C. Partridge" david.partridge@perdrix.co.uk
To: "'Discussion of precise voltage measurement'"
volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081
Message-ID: 008201d60421$9e4df7b0$dae9e710$@perdrix.co.uk
Content-Type: text/plain;      charset="us-ascii"

You'll find the ROM images here:
<
https://groups.io/g/Solartron_Schlumberger_Equipment/files/Solartron%207071
%20and%207081
https://groups.io/g/Solartron_Schlumberger_Equipment/files/Solartron%207071%20and%207081

Depending on exactly which CPU board you have you need either TMS2564
(early
boards) or TMS2764 (late boards) EPROMS

David


Message: 2
Date: Fri, 27 Mar 2020 10:24:24 +0000
From: Andre Andre@Lanoe.net
To: Discussion of precise voltage measurement
volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081
Message-ID: 1585304664509.18014@Lanoe.net
Content-Type: text/plain; charset="iso-8859-1"

Maybe contact your local health authority to see if they can make use of
them?
One big problem is that these are in short supply.


From: volt-nuts volt-nuts-bounces@lists.febo.com on behalf of J. L.
Trantham jltran@att.net
Sent: 27 March 2020 00:25
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7081

I also have UV EPROM erasers.

Joe

-----Original Message-----
From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of J.
L.
Trantham
Sent: Thursday, March 26, 2020 6:50 PM
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7081

Rick,

Where are you located?

I have a couple 7081's and the ability to read, archive, and program most
any EPROM you need, assuming I have the EPROM.

From your email, I think you need the TMS2564.  It's been a few years

since
I have opened a 7081 to see how many and what specifically the EPROM's are.

Happy to help if I can.

Joe

-----Original Message-----
From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of
Rick
Bale
Sent: Thursday, March 26, 2020 12:42 PM
To: volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081

I installed all the 7081's static ram chips and of course no joy. It
wouldn't be a worth while repair if it was hard! I double checked the +5v
and +12v power rails again and that's still looking good.  All LEDs just
stay on with no display like it's hanging up very early in the boot up
sequence.

Seems like the next step is to replace the eproms chips.  I believe I can
find these online, but I will have to program them.  Where do I start?  I
need to invest in a reader/writer.  We live in a Windows 10 world.  I can
run it in DOS if I had to or even in a earlier version of windows in a
virtual session.  I'd really like to read the old chips as well and compare
it to what I'm seeing with saved images that are available from xdevs, etc.

Does anyone have a recommendation for an economical way to enter the eprom
world?  I've seen reader/writers that are over $1000 and ones for $39 and
everything in between.  Besides confirming it can read the TMS2564 chips,
is there specific criteria or features I should be looking for in the
reader/writer?

Thanks all, Rick

On Mon, Mar 16, 2020 at 6:45 AM Rick Bale rpbale@bellsouth.net wrote:

I've order 6 ICs straight away.
Hitachi HM6117LP-4 6117 2K x 8 CMOS Static RAM

These look to be direct replacements.

Rick

On Sun, Mar 15, 2020 at 12:00 PM volt-nuts-request@lists.febo.com

wrote:

Send volt-nuts mailing list submissions to
volt-nuts@lists.febo.com

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When replying, please edit your Subject line so it is more specific
than "Re: Contents of volt-nuts digest..."

Today's Topics:

1. Solartron 7081 (Rick Bale)
2. Re: Solartron 7081 (Bruce Griffiths)
3. Re: Solartron 7081 (Shaun Merrigan)

Message: 1
Date: Sat, 14 Mar 2020 18:05:38 -0400
From: Rick Bale rpbale@bellsouth.net
To: volt-nuts@lists.febo.com
Subject: [volt-nuts] Solartron 7081
Message-ID: 44537A00-3FB7-4BF3-A425-4B7546C836DE@bellsouth.net
Content-Type: text/plain; charset=utf-8

Hey all, this list has been too quiet. I just took delivery of a
Solartron 7081. It?s starts up with all leds on with no screen, then

hangs

there. First inspection revealed that two memory chips were in

backwards.

But correction didn?t fix anything. 5v rail is good on every IC on the
upper logic board.

This one will be tough for me as it looks like I need to spend a lot of
time working through the logic. Not my strong skill.

Rick


Message: 2
Date: Sun, 15 Mar 2020 11:24:21 +1300 (NZDT)
From: Bruce Griffiths bruce.griffiths@xtra.co.nz
To: Discussion of precise voltage measurement
volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081
Message-ID: 1609124701.2783993.1584224661504@webmail.xtra.co.nz
Content-Type: text/plain; charset=UTF-8

If plugging the memory chips in backwards means their power supply
connections were reversed, those memory chips are likely toast.

Bruce

On 15 March 2020 at 11:05 Rick Bale rpbale@bellsouth.net wrote:

Hey all, this list has been too quiet. I just took delivery of a

Solartron 7081. It?s starts up with all leds on with no screen, then

hangs

there. First inspection revealed that two memory chips were in

backwards.

But correction didn?t fix anything. 5v rail is good on every IC on the
upper logic board.

This one will be tough for me as it looks like I need to spend a lot

of

time working through the logic. Not my strong skill.

Rick


volt-nuts mailing list -- volt-nuts@lists.febo.com
To unsubscribe, go to

and follow the instructions there.


Message: 3
Date: Sat, 14 Mar 2020 23:17:38 +0000
From: Shaun Merrigan shaun_merrigan@outlook.com
To: Discussion of precise voltage measurement
volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081
Message-ID:
<

Content-Type: text/plain; charset="utf-8"

Rick,

ROM images for this meter are readily available on XDevs or in the
archives of the Solartron (group on groups.io), so you can easily burn
new ROMS as you need.
There are some excellent threads on the 7081 and 7071 on the eevblog
forum which are certainly worth reading.

Shaun Merrigan

-----Original Message-----
From: volt-nuts volt-nuts-bounces@lists.febo.com On Behalf Of Rick

Bale

Sent: Saturday, March 14, 2020 16:06
To: volt-nuts@lists.febo.com
Subject: [volt-nuts] Solartron 7081

Hey all, this list has been too quiet. I just took delivery of a
Solartron 7081. It?s starts up with all leds on with no screen, then

hangs

there. First inspection revealed that two memory chips were in

backwards.

But correction didn?t fix anything. 5v rail is good on every IC on the
upper logic board.

This one will be tough for me as it looks like I need to spend a lot of
time working through the logic. Not my strong skill.

Rick


volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go

to

http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com
and follow the instructions there.


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Message: 3
Date: Fri, 27 Mar 2020 07:23:50 -0500
From: "J. L. Trantham" jltran@att.net
To: "'Discussion of precise voltage measurement'"
volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081
Message-ID: 014f01d60432$9333f4e0$b99bdea0$@att.net
Content-Type: text/plain;      charset="us-ascii"

It can accommodate only about 6-8 EPROMs at a time and it takes about an
hour to erase them.  Not really designed for 'high volume'.

Joe

-----Original Message-----
From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of
Andre
Sent: Friday, March 27, 2020 5:24 AM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] Solartron 7081

Maybe contact your local health authority to see if they can make use of
them?
One big problem is that these are in short supply.


From: volt-nuts volt-nuts-bounces@lists.febo.com on behalf of J. L.
Trantham jltran@att.net
Sent: 27 March 2020 00:25
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7081

I also have UV EPROM erasers.

Joe

-----Original Message-----
From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of J.
L.
Trantham
Sent: Thursday, March 26, 2020 6:50 PM
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7081

Rick,

Where are you located?

I have a couple 7081's and the ability to read, archive, and program most
any EPROM you need, assuming I have the EPROM.

From your email, I think you need the TMS2564.  It's been a few years

since
I have opened a 7081 to see how many and what specifically the EPROM's are.

Happy to help if I can.

Joe

-----Original Message-----
From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of
Rick
Bale
Sent: Thursday, March 26, 2020 12:42 PM
To: volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081

I installed all the 7081's static ram chips and of course no joy. It
wouldn't be a worth while repair if it was hard! I double checked the +5v
and +12v power rails again and that's still looking good.  All LEDs just
stay on with no display like it's hanging up very early in the boot up
sequence.

Seems like the next step is to replace the eproms chips.  I believe I can
find these online, but I will have to program them.  Where do I start?  I
need to invest in a reader/writer.  We live in a Windows 10 world.  I can
run it in DOS if I had to or even in a earlier version of windows in a
virtual session.  I'd really like to read the old chips as well and compare
it to what I'm seeing with saved images that are available from xdevs, etc.

Does anyone have a recommendation for an economical way to enter the eprom
world?  I've seen reader/writers that are over $1000 and ones for $39 and
everything in between.  Besides confirming it can read the TMS2564 chips,
is there specific criteria or features I should be looking for in the
reader/writer?

Thanks all, Rick

On Mon, Mar 16, 2020 at 6:45 AM Rick Bale rpbale@bellsouth.net wrote:

I've order 6 ICs straight away.
Hitachi HM6117LP-4 6117 2K x 8 CMOS Static RAM

These look to be direct replacements.

Rick

On Sun, Mar 15, 2020 at 12:00 PM volt-nuts-request@lists.febo.com

wrote:

Send volt-nuts mailing list submissions to
volt-nuts@lists.febo.com

To subscribe or unsubscribe via the World Wide Web, visit
http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com
or, via email, send a message with subject or body 'help' to
volt-nuts-request@lists.febo.com

You can reach the person managing the list at
volt-nuts-owner@lists.febo.com

When replying, please edit your Subject line so it is more specific
than "Re: Contents of volt-nuts digest..."

Today's Topics:

1. Solartron 7081 (Rick Bale)
2. Re: Solartron 7081 (Bruce Griffiths)
3. Re: Solartron 7081 (Shaun Merrigan)

Message: 1
Date: Sat, 14 Mar 2020 18:05:38 -0400
From: Rick Bale rpbale@bellsouth.net
To: volt-nuts@lists.febo.com
Subject: [volt-nuts] Solartron 7081
Message-ID: 44537A00-3FB7-4BF3-A425-4B7546C836DE@bellsouth.net
Content-Type: text/plain; charset=utf-8

Hey all, this list has been too quiet. I just took delivery of a
Solartron 7081. It?s starts up with all leds on with no screen, then

hangs

there. First inspection revealed that two memory chips were in

backwards.

But correction didn?t fix anything. 5v rail is good on every IC on the
upper logic board.

This one will be tough for me as it looks like I need to spend a lot of
time working through the logic. Not my strong skill.

Rick


Message: 2
Date: Sun, 15 Mar 2020 11:24:21 +1300 (NZDT)
From: Bruce Griffiths bruce.griffiths@xtra.co.nz
To: Discussion of precise voltage measurement
volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081
Message-ID: 1609124701.2783993.1584224661504@webmail.xtra.co.nz
Content-Type: text/plain; charset=UTF-8

If plugging the memory chips in backwards means their power supply
connections were reversed, those memory chips are likely toast.

Bruce

On 15 March 2020 at 11:05 Rick Bale rpbale@bellsouth.net wrote:

Hey all, this list has been too quiet. I just took delivery of a

Solartron 7081. It?s starts up with all leds on with no screen, then

hangs

there. First inspection revealed that two memory chips were in

backwards.

But correction didn?t fix anything. 5v rail is good on every IC on the
upper logic board.

This one will be tough for me as it looks like I need to spend a lot

of

time working through the logic. Not my strong skill.

Rick


volt-nuts mailing list -- volt-nuts@lists.febo.com
To unsubscribe, go to

and follow the instructions there.


Message: 3
Date: Sat, 14 Mar 2020 23:17:38 +0000
From: Shaun Merrigan shaun_merrigan@outlook.com
To: Discussion of precise voltage measurement
volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081
Message-ID:
<

Content-Type: text/plain; charset="utf-8"

Rick,

ROM images for this meter are readily available on XDevs or in the
archives of the Solartron (group on groups.io), so you can easily burn
new ROMS as you need.
There are some excellent threads on the 7081 and 7071 on the eevblog
forum which are certainly worth reading.

Shaun Merrigan

-----Original Message-----
From: volt-nuts volt-nuts-bounces@lists.febo.com On Behalf Of Rick

Bale

Sent: Saturday, March 14, 2020 16:06
To: volt-nuts@lists.febo.com
Subject: [volt-nuts] Solartron 7081

Hey all, this list has been too quiet. I just took delivery of a
Solartron 7081. It?s starts up with all leds on with no screen, then

hangs

there. First inspection revealed that two memory chips were in

backwards.

But correction didn?t fix anything. 5v rail is good on every IC on the
upper logic board.

This one will be tough for me as it looks like I need to spend a lot of
time working through the logic. Not my strong skill.

Rick


volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go

to

http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com
and follow the instructions there.


Subject: Digest Footer


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End of volt-nuts Digest, Vol 124, Issue 1



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Message: 4
Date: Fri, 27 Mar 2020 12:36:05 +0000
From: Andre Andre@Lanoe.net
To: Discussion of precise voltage measurement
volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081
Message-ID: 1585312565531.39936@Lanoe.net
Content-Type: text/plain; charset="iso-8859-1"

Better than nothing. I am thinking about using them to sterilize
glassware, 96 well plates etc.
Also useful for making control vials as sterility can be guaranteed unlike
other methods.

Larger units with high capacity can indeed be used, the other possibility
is mounting the tube
on a rotary platform with a small battery pack over the items to be
treated.
Also this can be combined with direct feedback of UV intensity and
reflection so as not to overdrive
the tube and ensure verification that the items are sterile.

-Andre


From: volt-nuts volt-nuts-bounces@lists.febo.com on behalf of J. L.
Trantham jltran@att.net
Sent: 27 March 2020 12:23
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7081

It can accommodate only about 6-8 EPROMs at a time and it takes about an
hour to erase them.  Not really designed for 'high volume'.

Joe

-----Original Message-----
From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of
Andre
Sent: Friday, March 27, 2020 5:24 AM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] Solartron 7081

Maybe contact your local health authority to see if they can make use of
them?
One big problem is that these are in short supply.


From: volt-nuts volt-nuts-bounces@lists.febo.com on behalf of J. L.
Trantham jltran@att.net
Sent: 27 March 2020 00:25
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7081

I also have UV EPROM erasers.

Joe

-----Original Message-----
From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of J.
L.
Trantham
Sent: Thursday, March 26, 2020 6:50 PM
To: 'Discussion of precise voltage measurement'
Subject: Re: [volt-nuts] Solartron 7081

Rick,

Where are you located?

I have a couple 7081's and the ability to read, archive, and program most
any EPROM you need, assuming I have the EPROM.

From your email, I think you need the TMS2564.  It's been a few years

since
I have opened a 7081 to see how many and what specifically the EPROM's are.

Happy to help if I can.

Joe

-----Original Message-----
From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of
Rick
Bale
Sent: Thursday, March 26, 2020 12:42 PM
To: volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081

I installed all the 7081's static ram chips and of course no joy. It
wouldn't be a worth while repair if it was hard! I double checked the +5v
and +12v power rails again and that's still looking good.  All LEDs just
stay on with no display like it's hanging up very early in the boot up
sequence.

Seems like the next step is to replace the eproms chips.  I believe I can
find these online, but I will have to program them.  Where do I start?  I
need to invest in a reader/writer.  We live in a Windows 10 world.  I can
run it in DOS if I had to or even in a earlier version of windows in a
virtual session.  I'd really like to read the old chips as well and compare
it to what I'm seeing with saved images that are available from xdevs, etc.

Does anyone have a recommendation for an economical way to enter the eprom
world?  I've seen reader/writers that are over $1000 and ones for $39 and
everything in between.  Besides confirming it can read the TMS2564 chips,
is there specific criteria or features I should be looking for in the
reader/writer?

Thanks all, Rick

On Mon, Mar 16, 2020 at 6:45 AM Rick Bale rpbale@bellsouth.net wrote:

I've order 6 ICs straight away.
Hitachi HM6117LP-4 6117 2K x 8 CMOS Static RAM

These look to be direct replacements.

Rick

On Sun, Mar 15, 2020 at 12:00 PM volt-nuts-request@lists.febo.com

wrote:

Send volt-nuts mailing list submissions to
volt-nuts@lists.febo.com

To subscribe or unsubscribe via the World Wide Web, visit
http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com
or, via email, send a message with subject or body 'help' to
volt-nuts-request@lists.febo.com

You can reach the person managing the list at
volt-nuts-owner@lists.febo.com

When replying, please edit your Subject line so it is more specific
than "Re: Contents of volt-nuts digest..."

Today's Topics:

1. Solartron 7081 (Rick Bale)
2. Re: Solartron 7081 (Bruce Griffiths)
3. Re: Solartron 7081 (Shaun Merrigan)

Message: 1
Date: Sat, 14 Mar 2020 18:05:38 -0400
From: Rick Bale rpbale@bellsouth.net
To: volt-nuts@lists.febo.com
Subject: [volt-nuts] Solartron 7081
Message-ID: 44537A00-3FB7-4BF3-A425-4B7546C836DE@bellsouth.net
Content-Type: text/plain; charset=utf-8

Hey all, this list has been too quiet. I just took delivery of a
Solartron 7081. It?s starts up with all leds on with no screen, then

hangs

there. First inspection revealed that two memory chips were in

backwards.

But correction didn?t fix anything. 5v rail is good on every IC on the
upper logic board.

This one will be tough for me as it looks like I need to spend a lot of
time working through the logic. Not my strong skill.

Rick


Message: 2
Date: Sun, 15 Mar 2020 11:24:21 +1300 (NZDT)
From: Bruce Griffiths bruce.griffiths@xtra.co.nz
To: Discussion of precise voltage measurement
volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081
Message-ID: 1609124701.2783993.1584224661504@webmail.xtra.co.nz
Content-Type: text/plain; charset=UTF-8

If plugging the memory chips in backwards means their power supply
connections were reversed, those memory chips are likely toast.

Bruce

On 15 March 2020 at 11:05 Rick Bale rpbale@bellsouth.net wrote:

Hey all, this list has been too quiet. I just took delivery of a

Solartron 7081. It?s starts up with all leds on with no screen, then

hangs

there. First inspection revealed that two memory chips were in

backwards.

But correction didn?t fix anything. 5v rail is good on every IC on the
upper logic board.

This one will be tough for me as it looks like I need to spend a lot

of

time working through the logic. Not my strong skill.

Rick


volt-nuts mailing list -- volt-nuts@lists.febo.com
To unsubscribe, go to

and follow the instructions there.


Message: 3
Date: Sat, 14 Mar 2020 23:17:38 +0000
From: Shaun Merrigan shaun_merrigan@outlook.com
To: Discussion of precise voltage measurement
volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Solartron 7081
Message-ID:
<

Content-Type: text/plain; charset="utf-8"

Rick,

ROM images for this meter are readily available on XDevs or in the
archives of the Solartron (group on groups.io), so you can easily burn
new ROMS as you need.
There are some excellent threads on the 7081 and 7071 on the eevblog
forum which are certainly worth reading.

Shaun Merrigan

-----Original Message-----
From: volt-nuts volt-nuts-bounces@lists.febo.com On Behalf Of Rick

Bale

Sent: Saturday, March 14, 2020 16:06
To: volt-nuts@lists.febo.com
Subject: [volt-nuts] Solartron 7081

Hey all, this list has been too quiet. I just took delivery of a
Solartron 7081. It?s starts up with all leds on with no screen, then

hangs

there. First inspection revealed that two memory chips were in

backwards.

But correction didn?t fix anything. 5v rail is good on every IC on the
upper logic board.

This one will be tough for me as it looks like I need to spend a lot of
time working through the logic. Not my strong skill.

Rick


volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go

to

http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com
and follow the instructions there.


Subject: Digest Footer


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End of volt-nuts Digest, Vol 124, Issue 1



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End of volt-nuts Digest, Vol 124, Issue 5


David, I went to double check if I physically have 2564 or 2764 and I discovered all the ROMs were in the wrong spots but not backwards like the ram chips earlier. Wow. I corrected my TMS2564JS ROMs according to what looked like original stickers. I rebooted and had for the first time a continuous beep. The LEDs all stayed on with a dead screen. I shut it off. On second boot the beep was gone but the front panel was the same. Overall no improvement. The physical chip numbers match the schematic's part number. I ordered the MiniPro TL866CS USB in the Plus version to burn the ROMs. It will arrive on 4/1. Is it worth it to erase/reprogram the same ROM or should I just replace/program them. Rick > ------------------------------------------- > > Message: 1 > Date: Fri, 27 Mar 2020 10:22:27 -0000 > From: "David C. Partridge" <david.partridge@perdrix.co.uk> > To: "'Discussion of precise voltage measurement'" > <volt-nuts@lists.febo.com> > Subject: Re: [volt-nuts] Solartron 7081 > Message-ID: <008201d60421$9e4df7b0$dae9e710$@perdrix.co.uk> > Content-Type: text/plain; charset="us-ascii" > > You'll find the ROM images here: > < > https://groups.io/g/Solartron_Schlumberger_Equipment/files/Solartron%207071 > %20and%207081 > <https://groups.io/g/Solartron_Schlumberger_Equipment/files/Solartron%207071%20and%207081> > > > > Depending on exactly which CPU board you have you need either TMS2564 > (early > boards) or TMS2764 (late boards) EPROMS > > David > > > > > ------------------------------ > > Message: 2 > Date: Fri, 27 Mar 2020 10:24:24 +0000 > From: Andre <Andre@Lanoe.net> > To: Discussion of precise voltage measurement > <volt-nuts@lists.febo.com> > Subject: Re: [volt-nuts] Solartron 7081 > Message-ID: <1585304664509.18014@Lanoe.net> > Content-Type: text/plain; charset="iso-8859-1" > > Maybe contact your local health authority to see if they can make use of > them? > One big problem is that these are in short supply. > ________________________________________ > From: volt-nuts <volt-nuts-bounces@lists.febo.com> on behalf of J. L. > Trantham <jltran@att.net> > Sent: 27 March 2020 00:25 > To: 'Discussion of precise voltage measurement' > Subject: Re: [volt-nuts] Solartron 7081 > > I also have UV EPROM erasers. > > Joe > > -----Original Message----- > From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of J. > L. > Trantham > Sent: Thursday, March 26, 2020 6:50 PM > To: 'Discussion of precise voltage measurement' > Subject: Re: [volt-nuts] Solartron 7081 > > Rick, > > Where are you located? > > I have a couple 7081's and the ability to read, archive, and program most > any EPROM you need, assuming I have the EPROM. > > >From your email, I think you need the TMS2564. It's been a few years > since > I have opened a 7081 to see how many and what specifically the EPROM's are. > > Happy to help if I can. > > Joe > > -----Original Message----- > From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of > Rick > Bale > Sent: Thursday, March 26, 2020 12:42 PM > To: volt-nuts@lists.febo.com > Subject: Re: [volt-nuts] Solartron 7081 > > I installed all the 7081's static ram chips and of course no joy. It > wouldn't be a worth while repair if it was hard! I double checked the +5v > and +12v power rails again and that's still looking good. All LEDs just > stay on with no display like it's hanging up very early in the boot up > sequence. > > Seems like the next step is to replace the eproms chips. I believe I can > find these online, but I will have to program them. Where do I start? I > need to invest in a reader/writer. We live in a Windows 10 world. I can > run it in DOS if I had to or even in a earlier version of windows in a > virtual session. I'd really like to read the old chips as well and compare > it to what I'm seeing with saved images that are available from xdevs, etc. > > Does anyone have a recommendation for an economical way to enter the eprom > world? I've seen reader/writers that are over $1000 and ones for $39 and > everything in between. Besides confirming it can read the TMS2564 chips, > is there specific criteria or features I should be looking for in the > reader/writer? > > Thanks all, Rick > > On Mon, Mar 16, 2020 at 6:45 AM Rick Bale <rpbale@bellsouth.net> wrote: > > > I've order 6 ICs straight away. > > Hitachi HM6117LP-4 6117 2K x 8 CMOS Static RAM > > > > These look to be direct replacements. > > > > Rick > > > > > > > > > > On Sun, Mar 15, 2020 at 12:00 PM <volt-nuts-request@lists.febo.com> > wrote: > > > >> Send volt-nuts mailing list submissions to > >> volt-nuts@lists.febo.com > >> > >> To subscribe or unsubscribe via the World Wide Web, visit > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> or, via email, send a message with subject or body 'help' to > >> volt-nuts-request@lists.febo.com > >> > >> You can reach the person managing the list at > >> volt-nuts-owner@lists.febo.com > >> > >> When replying, please edit your Subject line so it is more specific > >> than "Re: Contents of volt-nuts digest..." > >> > >> > >> Today's Topics: > >> > >> 1. Solartron 7081 (Rick Bale) > >> 2. Re: Solartron 7081 (Bruce Griffiths) > >> 3. Re: Solartron 7081 (Shaun Merrigan) > >> > >> > >> ---------------------------------------------------------------------- > >> > >> Message: 1 > >> Date: Sat, 14 Mar 2020 18:05:38 -0400 > >> From: Rick Bale <rpbale@bellsouth.net> > >> To: volt-nuts@lists.febo.com > >> Subject: [volt-nuts] Solartron 7081 > >> Message-ID: <44537A00-3FB7-4BF3-A425-4B7546C836DE@bellsouth.net> > >> Content-Type: text/plain; charset=utf-8 > >> > >> Hey all, this list has been too quiet. I just took delivery of a > >> Solartron 7081. It?s starts up with all leds on with no screen, then > hangs > >> there. First inspection revealed that two memory chips were in > backwards. > >> But correction didn?t fix anything. 5v rail is good on every IC on the > >> upper logic board. > >> > >> This one will be tough for me as it looks like I need to spend a lot of > >> time working through the logic. Not my strong skill. > >> > >> Rick > >> > >> > >> > >> ------------------------------ > >> > >> Message: 2 > >> Date: Sun, 15 Mar 2020 11:24:21 +1300 (NZDT) > >> From: Bruce Griffiths <bruce.griffiths@xtra.co.nz> > >> To: Discussion of precise voltage measurement > >> <volt-nuts@lists.febo.com> > >> Subject: Re: [volt-nuts] Solartron 7081 > >> Message-ID: <1609124701.2783993.1584224661504@webmail.xtra.co.nz> > >> Content-Type: text/plain; charset=UTF-8 > >> > >> If plugging the memory chips in backwards means their power supply > >> connections were reversed, those memory chips are likely toast. > >> > >> Bruce > >> > On 15 March 2020 at 11:05 Rick Bale <rpbale@bellsouth.net> wrote: > >> > > >> > > >> > Hey all, this list has been too quiet. I just took delivery of a > >> Solartron 7081. It?s starts up with all leds on with no screen, then > hangs > >> there. First inspection revealed that two memory chips were in > backwards. > >> But correction didn?t fix anything. 5v rail is good on every IC on the > >> upper logic board. > >> > > >> > This one will be tough for me as it looks like I need to spend a lot > of > >> time working through the logic. Not my strong skill. > >> > > >> > Rick > >> > > >> > _______________________________________________ > >> > volt-nuts mailing list -- volt-nuts@lists.febo.com > >> > To unsubscribe, go to > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> > and follow the instructions there. > >> > >> > >> > >> ------------------------------ > >> > >> Message: 3 > >> Date: Sat, 14 Mar 2020 23:17:38 +0000 > >> From: Shaun Merrigan <shaun_merrigan@outlook.com> > >> To: Discussion of precise voltage measurement > >> <volt-nuts@lists.febo.com> > >> Subject: Re: [volt-nuts] Solartron 7081 > >> Message-ID: > >> < > >> > > MWHPR22MB01426F76421B8001E6791B0ADAFB0@MWHPR22MB0142.namprd22.prod.outlook.c > om > >> > > >> > >> Content-Type: text/plain; charset="utf-8" > >> > >> Rick, > >> > >> ROM images for this meter are readily available on XDevs or in the > >> archives of the Solartron (group on groups.io), so you can easily burn > >> new ROMS as you need. > >> There are some excellent threads on the 7081 and 7071 on the eevblog > >> forum which are certainly worth reading. > >> > >> Shaun Merrigan > >> > >> -----Original Message----- > >> From: volt-nuts <volt-nuts-bounces@lists.febo.com> On Behalf Of Rick > Bale > >> Sent: Saturday, March 14, 2020 16:06 > >> To: volt-nuts@lists.febo.com > >> Subject: [volt-nuts] Solartron 7081 > >> > >> Hey all, this list has been too quiet. I just took delivery of a > >> Solartron 7081. It?s starts up with all leds on with no screen, then > hangs > >> there. First inspection revealed that two memory chips were in > backwards. > >> But correction didn?t fix anything. 5v rail is good on every IC on the > >> upper logic board. > >> > >> This one will be tough for me as it looks like I need to spend a lot of > >> time working through the logic. Not my strong skill. > >> > >> Rick > >> > >> _______________________________________________ > >> volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go > to > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> and follow the instructions there. > >> > >> ------------------------------ > >> > >> Subject: Digest Footer > >> > >> _______________________________________________ > >> volt-nuts mailing list > >> volt-nuts@lists.febo.com > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> > >> > >> ------------------------------ > >> > >> End of volt-nuts Digest, Vol 124, Issue 1 > >> ***************************************** > >> > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > > > ------------------------------ > > Message: 3 > Date: Fri, 27 Mar 2020 07:23:50 -0500 > From: "J. L. Trantham" <jltran@att.net> > To: "'Discussion of precise voltage measurement'" > <volt-nuts@lists.febo.com> > Subject: Re: [volt-nuts] Solartron 7081 > Message-ID: <014f01d60432$9333f4e0$b99bdea0$@att.net> > Content-Type: text/plain; charset="us-ascii" > > It can accommodate only about 6-8 EPROMs at a time and it takes about an > hour to erase them. Not really designed for 'high volume'. > > Joe > > -----Original Message----- > From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of > Andre > Sent: Friday, March 27, 2020 5:24 AM > To: Discussion of precise voltage measurement > Subject: Re: [volt-nuts] Solartron 7081 > > Maybe contact your local health authority to see if they can make use of > them? > One big problem is that these are in short supply. > ________________________________________ > From: volt-nuts <volt-nuts-bounces@lists.febo.com> on behalf of J. L. > Trantham <jltran@att.net> > Sent: 27 March 2020 00:25 > To: 'Discussion of precise voltage measurement' > Subject: Re: [volt-nuts] Solartron 7081 > > I also have UV EPROM erasers. > > Joe > > -----Original Message----- > From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of J. > L. > Trantham > Sent: Thursday, March 26, 2020 6:50 PM > To: 'Discussion of precise voltage measurement' > Subject: Re: [volt-nuts] Solartron 7081 > > Rick, > > Where are you located? > > I have a couple 7081's and the ability to read, archive, and program most > any EPROM you need, assuming I have the EPROM. > > >From your email, I think you need the TMS2564. It's been a few years > since > I have opened a 7081 to see how many and what specifically the EPROM's are. > > Happy to help if I can. > > Joe > > -----Original Message----- > From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of > Rick > Bale > Sent: Thursday, March 26, 2020 12:42 PM > To: volt-nuts@lists.febo.com > Subject: Re: [volt-nuts] Solartron 7081 > > I installed all the 7081's static ram chips and of course no joy. It > wouldn't be a worth while repair if it was hard! I double checked the +5v > and +12v power rails again and that's still looking good. All LEDs just > stay on with no display like it's hanging up very early in the boot up > sequence. > > Seems like the next step is to replace the eproms chips. I believe I can > find these online, but I will have to program them. Where do I start? I > need to invest in a reader/writer. We live in a Windows 10 world. I can > run it in DOS if I had to or even in a earlier version of windows in a > virtual session. I'd really like to read the old chips as well and compare > it to what I'm seeing with saved images that are available from xdevs, etc. > > Does anyone have a recommendation for an economical way to enter the eprom > world? I've seen reader/writers that are over $1000 and ones for $39 and > everything in between. Besides confirming it can read the TMS2564 chips, > is there specific criteria or features I should be looking for in the > reader/writer? > > Thanks all, Rick > > On Mon, Mar 16, 2020 at 6:45 AM Rick Bale <rpbale@bellsouth.net> wrote: > > > I've order 6 ICs straight away. > > Hitachi HM6117LP-4 6117 2K x 8 CMOS Static RAM > > > > These look to be direct replacements. > > > > Rick > > > > > > > > > > On Sun, Mar 15, 2020 at 12:00 PM <volt-nuts-request@lists.febo.com> > wrote: > > > >> Send volt-nuts mailing list submissions to > >> volt-nuts@lists.febo.com > >> > >> To subscribe or unsubscribe via the World Wide Web, visit > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> or, via email, send a message with subject or body 'help' to > >> volt-nuts-request@lists.febo.com > >> > >> You can reach the person managing the list at > >> volt-nuts-owner@lists.febo.com > >> > >> When replying, please edit your Subject line so it is more specific > >> than "Re: Contents of volt-nuts digest..." > >> > >> > >> Today's Topics: > >> > >> 1. Solartron 7081 (Rick Bale) > >> 2. Re: Solartron 7081 (Bruce Griffiths) > >> 3. Re: Solartron 7081 (Shaun Merrigan) > >> > >> > >> ---------------------------------------------------------------------- > >> > >> Message: 1 > >> Date: Sat, 14 Mar 2020 18:05:38 -0400 > >> From: Rick Bale <rpbale@bellsouth.net> > >> To: volt-nuts@lists.febo.com > >> Subject: [volt-nuts] Solartron 7081 > >> Message-ID: <44537A00-3FB7-4BF3-A425-4B7546C836DE@bellsouth.net> > >> Content-Type: text/plain; charset=utf-8 > >> > >> Hey all, this list has been too quiet. I just took delivery of a > >> Solartron 7081. It?s starts up with all leds on with no screen, then > hangs > >> there. First inspection revealed that two memory chips were in > backwards. > >> But correction didn?t fix anything. 5v rail is good on every IC on the > >> upper logic board. > >> > >> This one will be tough for me as it looks like I need to spend a lot of > >> time working through the logic. Not my strong skill. > >> > >> Rick > >> > >> > >> > >> ------------------------------ > >> > >> Message: 2 > >> Date: Sun, 15 Mar 2020 11:24:21 +1300 (NZDT) > >> From: Bruce Griffiths <bruce.griffiths@xtra.co.nz> > >> To: Discussion of precise voltage measurement > >> <volt-nuts@lists.febo.com> > >> Subject: Re: [volt-nuts] Solartron 7081 > >> Message-ID: <1609124701.2783993.1584224661504@webmail.xtra.co.nz> > >> Content-Type: text/plain; charset=UTF-8 > >> > >> If plugging the memory chips in backwards means their power supply > >> connections were reversed, those memory chips are likely toast. > >> > >> Bruce > >> > On 15 March 2020 at 11:05 Rick Bale <rpbale@bellsouth.net> wrote: > >> > > >> > > >> > Hey all, this list has been too quiet. I just took delivery of a > >> Solartron 7081. It?s starts up with all leds on with no screen, then > hangs > >> there. First inspection revealed that two memory chips were in > backwards. > >> But correction didn?t fix anything. 5v rail is good on every IC on the > >> upper logic board. > >> > > >> > This one will be tough for me as it looks like I need to spend a lot > of > >> time working through the logic. Not my strong skill. > >> > > >> > Rick > >> > > >> > _______________________________________________ > >> > volt-nuts mailing list -- volt-nuts@lists.febo.com > >> > To unsubscribe, go to > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> > and follow the instructions there. > >> > >> > >> > >> ------------------------------ > >> > >> Message: 3 > >> Date: Sat, 14 Mar 2020 23:17:38 +0000 > >> From: Shaun Merrigan <shaun_merrigan@outlook.com> > >> To: Discussion of precise voltage measurement > >> <volt-nuts@lists.febo.com> > >> Subject: Re: [volt-nuts] Solartron 7081 > >> Message-ID: > >> < > >> > > MWHPR22MB01426F76421B8001E6791B0ADAFB0@MWHPR22MB0142.namprd22.prod.outlook.c > om > >> > > >> > >> Content-Type: text/plain; charset="utf-8" > >> > >> Rick, > >> > >> ROM images for this meter are readily available on XDevs or in the > >> archives of the Solartron (group on groups.io), so you can easily burn > >> new ROMS as you need. > >> There are some excellent threads on the 7081 and 7071 on the eevblog > >> forum which are certainly worth reading. > >> > >> Shaun Merrigan > >> > >> -----Original Message----- > >> From: volt-nuts <volt-nuts-bounces@lists.febo.com> On Behalf Of Rick > Bale > >> Sent: Saturday, March 14, 2020 16:06 > >> To: volt-nuts@lists.febo.com > >> Subject: [volt-nuts] Solartron 7081 > >> > >> Hey all, this list has been too quiet. I just took delivery of a > >> Solartron 7081. It?s starts up with all leds on with no screen, then > hangs > >> there. First inspection revealed that two memory chips were in > backwards. > >> But correction didn?t fix anything. 5v rail is good on every IC on the > >> upper logic board. > >> > >> This one will be tough for me as it looks like I need to spend a lot of > >> time working through the logic. Not my strong skill. > >> > >> Rick > >> > >> _______________________________________________ > >> volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go > to > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> and follow the instructions there. > >> > >> ------------------------------ > >> > >> Subject: Digest Footer > >> > >> _______________________________________________ > >> volt-nuts mailing list > >> volt-nuts@lists.febo.com > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> > >> > >> ------------------------------ > >> > >> End of volt-nuts Digest, Vol 124, Issue 1 > >> ***************************************** > >> > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > > > ------------------------------ > > Message: 4 > Date: Fri, 27 Mar 2020 12:36:05 +0000 > From: Andre <Andre@Lanoe.net> > To: Discussion of precise voltage measurement > <volt-nuts@lists.febo.com> > Subject: Re: [volt-nuts] Solartron 7081 > Message-ID: <1585312565531.39936@Lanoe.net> > Content-Type: text/plain; charset="iso-8859-1" > > Better than nothing. I am thinking about using them to sterilize > glassware, 96 well plates etc. > Also useful for making control vials as sterility can be guaranteed unlike > other methods. > > Larger units with high capacity can indeed be used, the other possibility > is mounting the tube > on a rotary platform with a small battery pack over the items to be > treated. > Also this can be combined with direct feedback of UV intensity and > reflection so as not to overdrive > the tube and ensure verification that the items are sterile. > > -Andre > ________________________________________ > From: volt-nuts <volt-nuts-bounces@lists.febo.com> on behalf of J. L. > Trantham <jltran@att.net> > Sent: 27 March 2020 12:23 > To: 'Discussion of precise voltage measurement' > Subject: Re: [volt-nuts] Solartron 7081 > > It can accommodate only about 6-8 EPROMs at a time and it takes about an > hour to erase them. Not really designed for 'high volume'. > > Joe > > -----Original Message----- > From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of > Andre > Sent: Friday, March 27, 2020 5:24 AM > To: Discussion of precise voltage measurement > Subject: Re: [volt-nuts] Solartron 7081 > > Maybe contact your local health authority to see if they can make use of > them? > One big problem is that these are in short supply. > ________________________________________ > From: volt-nuts <volt-nuts-bounces@lists.febo.com> on behalf of J. L. > Trantham <jltran@att.net> > Sent: 27 March 2020 00:25 > To: 'Discussion of precise voltage measurement' > Subject: Re: [volt-nuts] Solartron 7081 > > I also have UV EPROM erasers. > > Joe > > -----Original Message----- > From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of J. > L. > Trantham > Sent: Thursday, March 26, 2020 6:50 PM > To: 'Discussion of precise voltage measurement' > Subject: Re: [volt-nuts] Solartron 7081 > > Rick, > > Where are you located? > > I have a couple 7081's and the ability to read, archive, and program most > any EPROM you need, assuming I have the EPROM. > > >From your email, I think you need the TMS2564. It's been a few years > since > I have opened a 7081 to see how many and what specifically the EPROM's are. > > Happy to help if I can. > > Joe > > -----Original Message----- > From: volt-nuts [mailto:volt-nuts-bounces@lists.febo.com] On Behalf Of > Rick > Bale > Sent: Thursday, March 26, 2020 12:42 PM > To: volt-nuts@lists.febo.com > Subject: Re: [volt-nuts] Solartron 7081 > > I installed all the 7081's static ram chips and of course no joy. It > wouldn't be a worth while repair if it was hard! I double checked the +5v > and +12v power rails again and that's still looking good. All LEDs just > stay on with no display like it's hanging up very early in the boot up > sequence. > > Seems like the next step is to replace the eproms chips. I believe I can > find these online, but I will have to program them. Where do I start? I > need to invest in a reader/writer. We live in a Windows 10 world. I can > run it in DOS if I had to or even in a earlier version of windows in a > virtual session. I'd really like to read the old chips as well and compare > it to what I'm seeing with saved images that are available from xdevs, etc. > > Does anyone have a recommendation for an economical way to enter the eprom > world? I've seen reader/writers that are over $1000 and ones for $39 and > everything in between. Besides confirming it can read the TMS2564 chips, > is there specific criteria or features I should be looking for in the > reader/writer? > > Thanks all, Rick > > On Mon, Mar 16, 2020 at 6:45 AM Rick Bale <rpbale@bellsouth.net> wrote: > > > I've order 6 ICs straight away. > > Hitachi HM6117LP-4 6117 2K x 8 CMOS Static RAM > > > > These look to be direct replacements. > > > > Rick > > > > > > > > > > On Sun, Mar 15, 2020 at 12:00 PM <volt-nuts-request@lists.febo.com> > wrote: > > > >> Send volt-nuts mailing list submissions to > >> volt-nuts@lists.febo.com > >> > >> To subscribe or unsubscribe via the World Wide Web, visit > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> or, via email, send a message with subject or body 'help' to > >> volt-nuts-request@lists.febo.com > >> > >> You can reach the person managing the list at > >> volt-nuts-owner@lists.febo.com > >> > >> When replying, please edit your Subject line so it is more specific > >> than "Re: Contents of volt-nuts digest..." > >> > >> > >> Today's Topics: > >> > >> 1. Solartron 7081 (Rick Bale) > >> 2. Re: Solartron 7081 (Bruce Griffiths) > >> 3. Re: Solartron 7081 (Shaun Merrigan) > >> > >> > >> ---------------------------------------------------------------------- > >> > >> Message: 1 > >> Date: Sat, 14 Mar 2020 18:05:38 -0400 > >> From: Rick Bale <rpbale@bellsouth.net> > >> To: volt-nuts@lists.febo.com > >> Subject: [volt-nuts] Solartron 7081 > >> Message-ID: <44537A00-3FB7-4BF3-A425-4B7546C836DE@bellsouth.net> > >> Content-Type: text/plain; charset=utf-8 > >> > >> Hey all, this list has been too quiet. I just took delivery of a > >> Solartron 7081. It?s starts up with all leds on with no screen, then > hangs > >> there. First inspection revealed that two memory chips were in > backwards. > >> But correction didn?t fix anything. 5v rail is good on every IC on the > >> upper logic board. > >> > >> This one will be tough for me as it looks like I need to spend a lot of > >> time working through the logic. Not my strong skill. > >> > >> Rick > >> > >> > >> > >> ------------------------------ > >> > >> Message: 2 > >> Date: Sun, 15 Mar 2020 11:24:21 +1300 (NZDT) > >> From: Bruce Griffiths <bruce.griffiths@xtra.co.nz> > >> To: Discussion of precise voltage measurement > >> <volt-nuts@lists.febo.com> > >> Subject: Re: [volt-nuts] Solartron 7081 > >> Message-ID: <1609124701.2783993.1584224661504@webmail.xtra.co.nz> > >> Content-Type: text/plain; charset=UTF-8 > >> > >> If plugging the memory chips in backwards means their power supply > >> connections were reversed, those memory chips are likely toast. > >> > >> Bruce > >> > On 15 March 2020 at 11:05 Rick Bale <rpbale@bellsouth.net> wrote: > >> > > >> > > >> > Hey all, this list has been too quiet. I just took delivery of a > >> Solartron 7081. It?s starts up with all leds on with no screen, then > hangs > >> there. First inspection revealed that two memory chips were in > backwards. > >> But correction didn?t fix anything. 5v rail is good on every IC on the > >> upper logic board. > >> > > >> > This one will be tough for me as it looks like I need to spend a lot > of > >> time working through the logic. Not my strong skill. > >> > > >> > Rick > >> > > >> > _______________________________________________ > >> > volt-nuts mailing list -- volt-nuts@lists.febo.com > >> > To unsubscribe, go to > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> > and follow the instructions there. > >> > >> > >> > >> ------------------------------ > >> > >> Message: 3 > >> Date: Sat, 14 Mar 2020 23:17:38 +0000 > >> From: Shaun Merrigan <shaun_merrigan@outlook.com> > >> To: Discussion of precise voltage measurement > >> <volt-nuts@lists.febo.com> > >> Subject: Re: [volt-nuts] Solartron 7081 > >> Message-ID: > >> < > >> > > MWHPR22MB01426F76421B8001E6791B0ADAFB0@MWHPR22MB0142.namprd22.prod.outlook.c > om > >> > > >> > >> Content-Type: text/plain; charset="utf-8" > >> > >> Rick, > >> > >> ROM images for this meter are readily available on XDevs or in the > >> archives of the Solartron (group on groups.io), so you can easily burn > >> new ROMS as you need. > >> There are some excellent threads on the 7081 and 7071 on the eevblog > >> forum which are certainly worth reading. > >> > >> Shaun Merrigan > >> > >> -----Original Message----- > >> From: volt-nuts <volt-nuts-bounces@lists.febo.com> On Behalf Of Rick > Bale > >> Sent: Saturday, March 14, 2020 16:06 > >> To: volt-nuts@lists.febo.com > >> Subject: [volt-nuts] Solartron 7081 > >> > >> Hey all, this list has been too quiet. I just took delivery of a > >> Solartron 7081. It?s starts up with all leds on with no screen, then > hangs > >> there. First inspection revealed that two memory chips were in > backwards. > >> But correction didn?t fix anything. 5v rail is good on every IC on the > >> upper logic board. > >> > >> This one will be tough for me as it looks like I need to spend a lot of > >> time working through the logic. Not my strong skill. > >> > >> Rick > >> > >> _______________________________________________ > >> volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go > to > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> and follow the instructions there. > >> > >> ------------------------------ > >> > >> Subject: Digest Footer > >> > >> _______________________________________________ > >> volt-nuts mailing list > >> volt-nuts@lists.febo.com > >> http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > >> > >> > >> ------------------------------ > >> > >> End of volt-nuts Digest, Vol 124, Issue 1 > >> ***************************************** > >> > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > > > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > volt-nuts mailing list > volt-nuts@lists.febo.com > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > > ------------------------------ > > End of volt-nuts Digest, Vol 124, Issue 5 > ***************************************** >