Empathy List Archives

RB

Rick Bale

Sat, Mar 14, 2020 10:05 PM

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

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

BG

Bruce Griffiths

Sat, Mar 14, 2020 10:24 PM

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

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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.

SM

Shaun Merrigan

Sat, Mar 14, 2020 11:17 PM

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.

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.