Hi Phil,
when you opened the PSU, did you before check, whether it's necessary
to solder something inside?
It's very likely, that your PSU still works - and I'm shure it does,
until I see one reason for an error, that it doesn't.
Yes, it's true that sometimes caps dry out and sometimes the surge
protector cap from interference suppression gets small cracks
BUT
I repaired more than 50 PSU from Lisa over years and only one had a
cracked cap and only two of them had a critical decrease in value due
to "drying-out"
You must know, that the components in those PSU are NOT very critical.
This will work proper within a wide range of values.
NB: In former times those caps even haven't been manufactured with
exact values. There was very often a tolerance of +/- 20% at brandnew
caps (20years ago)
So go on precisely with error-detection instead of change a lot of
components and hope one of that had caused the error.
Perhaps you describe, what your 1,2 PSU does or doesn't do anymore to
shrink the numbers of possible errors :-)
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?
...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
greetings TOM from Bavaria, the center of europe, the marvellous
castles of Koenig Ludwig e.g. Neuschwanstein and last but not least the
original Oktoberfest !
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