I just got a used Tek 465m. It worked perfectly when I tested it, and
then a couple more times after that. It would then intermittently not
turn on (although the screen illum would still work). Now, it
consistently won't turn on (still screen illum, tho).

I have opened it up and tested the +5/-5/+32 leads in a couple places
on the board, and none show what they should:

+5 = -0.11 V
-5 = -0.05 V
+32 = -0.04 V

there is some, but very little, variance in the above numbers over
time/tests.

i'm a beginner repairing electronics, but i have the feeling this is a
simple repair -- the thing worked perfectly until a couple days ago...
could it be something as simple as a busted cap? i have the owners/
maintenance manual with lots of diagrams in it (although, it seems,
none of the power supply circuits). could anyone point me in the right
direction to solve this problem? any help would be appreciated!
thanks,

gabe schine