I didn't check for -12V. I'll do that
before I go to the effort of pulling
the chip and replacing it.
Checked it. -0.60v There's a Elpac/TDC CB-3811 DC-DC converter on the
DOes this produce the +12V and -12V supplies from the 5V supply, or the
-12V supply form an exernal +12V supply, or what?
Anyway, I asusme it's a potted module ;-(. I've seen a few that were
little PCBs iwth discrete components on them, and those could be
repaired. Often if one output is missing, the fault is the rectifier or
output capacitor for that output.
board that may have died. I'll pull the board
tomorrow and test right at
the legs of the device. Thanks for questioning whether or not I'd checked
the -12v supply!
Finding a replacement is gonna be a stone b*tch I think. :(
I may have to go to another DC-DC converter that is near the same size
that I can wire in.
At least there's aren't many connections to kludge over...
-tony