Hi List, I partially fixed a "lowly" DV411 Dekavider from the "Electro-Measurements" epoque and wanted to report what worked out and what still is and have a general question about such devices. The part in question (just look what the cheapest one on ebay was, one made a power supply out of it) had a working first and second decade, but the can with the 3rd switch and last decade potentiometer required some work. The switch freewheeled, it didn't lock onto the right on-digit position. That was due to the slotted wheel slipping on the drive shaft out of position so it was no longer pressed against the spring-loaded ball. I was surprised that this wheel was just soldered to the drive shaft, so it was enough to push it back into the right position and solder it down with some very agressive flux (Soldeen-1). http://dg3hda.primeintrag.org/lib/exe/fetch.php?media=locking_cogwheel.jpg The 4th(5th) decade potentiometer seems to be electrically okay, but it turns 360° instead of 270°, I consider that it had some delimiters but these are scraped off. However, careful operation will be possible or replacement by a potentiometer and a adapter between the thin driveshaft of the switch to the axle of a new potentiometer. (Hoped to keep it original.) http://dg3hda.primeintrag.org/lib/exe/fetch.php?media=potentiometer.jpg For Pronographic reasons, a overview is available too. http://dg3hda.primeintrag.org/lib/exe/fetch.php?media=overview.jpg Besides hints for further repair, does someone know which alloy is used for wiring by ESI? Seems a bit hard for plain cooper. Best regards, Hendrik