Hello
I received a "free" Keithley 168 multi-meter that looks like it's been thrown down the stairs, burned and used for growing fishing bait in, all at the same time.
The case is completely unusable: cracked and warped and covered with some sort of fine black powder.
The electronics inside look a little better, except for the input range switch - it's got some corrosion and it seems stuck / broken.
Also, the transformer looks bad - like it's seen a lot of high temperatures.
The black dust is also covering all the main PCB.
The good part: it seems to at least power up - i can get the segments to light up.
By the way it looks, the function switches are ruined - can i get independent segments for that kind of switches ?
Any idea on how to proceed on getting it to work enough to check if it's got other defects ?
I can adapt some generic box for it, and i can also get a custom made transformer once i find the schematic.
For now i can power it up from a lab power supply - it seems there are only 2 voltage rails
Here are some pictures:
Event the pins that keep the display in place are broken - easy fix with some CA glue
The transformer and marks left by the previous inhabitants
The input section ( bypassed fuses ) and the stuck range buttons.
The on/off / charging buttons work properly.
The internal plastic part of one of the blue switches looks like it's broken and stuck at a strange angle