Advice/Suggestions for repairing Apple III power supply
derschjo at msu.edu
Sun Jul 22 22:59:07 CDT 2007
Hi all --
Picked up an Apple III this weekend in non-working condition, and I
suspect the power supply is at fault.
Symptoms are: On power up, a rapid clicking noise is emitted from the
power supply (maybe 4Hz or so), and the power LED on the system's
motherboard pulses at the same rate. Obviously I haven't run it for
more than a few seconds like this :).
There are no obviously bad parts (burned parts, swelled/leaking
capacitors, etc...) that I can see.
I'm mostly a software guy but I'm trying to get more into hardware so
that I can better maintain my collection as more stuff starts to break
down :). I'd like to make an attempt to fix this but I'm unsure where
to start. I have found schematics at:
If anyone has any advice, I'd be most appreciative.
Thanks in advance!
More information about the cctalk