Advice/Suggestions for repairing Apple III power supply

[Josh Dersch]

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: 
http://www.1000bit.net/SUPPORT/SCHEMA/a3/050-0057-a.jpg.

If anyone has any advice, I'd be most appreciative.

Thanks in advance!
- Josh