when you opened the PSU, did you before check, whether it's
necessary to solder something inside?
No, I just opened and tightened/crimped the back of one of the Pots
(using some pliers) that had come loose, and was wobbling. Did the
trick.
What means: "a 1.2 (not working 95% of the time)" Did you ever try
to figure out, why it works 5% ? And what did you change, so that
it works, and what, so it doesn't work again?
When I got the lisa from Jerry, we both suspected a bad PSU. Jerry
had not been able to get it to power on at all. When it arrived in
Japan (100v vs US120v), It worked. Sporadically and briefly.
Now when I use the 1.2 amp PSU and push the power button, there is a
chirp. Actually 2 chirps, one when you push in, and the other when
you release the power button. Chirp Chirp!
...and by the way... Jason wrote: "The dual diode ended up being
busted."
That is the reason of more than 60% of all non-working Lisa-PSU,
cause this part is highly critical compared to the caps in the PSU
Interesting
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