Lisa II/"whats the matter with my Lisa?"

From: Marion Bates <Marion.Bates_at_Dartmouth.EDU>
Date: Sun Aug 23 10:35:15 1998

--- <cdrmool_at_interlog.com> wrote:
>
> What's the matter with your Lisa?
>
> -- MB
>
I don't know apples, I usually work on P.C.'s, so I'm not sure. When I
try to turn it on it chirps. I've experienced that with monitors before
and the man who gave it to me (yes, you heard that right) said that it had
been working but the monitor was not coming on anymore. He also added
that he was able to get it up if he gently wiggled the circuit board at
the back. After hauling it down from the bedroom into my "lab" today and
asking it nicely to work, I wondered if it isn't the power supply
instead/as well.

Colan
--- end of quote ---

Re: wiggling the circuit board. Perhaps the card's contacts are dirty -- try rubbing alcohol with a lint-free cloth, you might get lucky.

The chirping sure sounds like a power supply thing to me...though for what it's worth, that was a real common problem (easily fixed) with the old compact Macs (128, 512, Plus) that used the analog board power supply. There was a distinctive ring of solder points, visible from the non-component side of the board, where the flyback transformer was attached (the blocky part with the little suction-cup connector that sends high voltage to the built-in CRT). Over time the solder would crack from repeated heat expansion and contraction. The symptom was either no video, or a more-or-less chirping sound. Often the solution was as simple as resoldering those points -- maybe there's some similarity with the Lisa's internals?

Dafax Processing has replacement power supplies for $250 (gouge! Sun Remarketing sells a entire Lisa for that, I think. But it's Mac-modified, bummer.) Maybe there's a discount if you trade in your old one, I don't know. Dafax's number is 718-746-8220, and Sun Remarketing's is 1-800-821-3221 (maybe they have parts for less?)

Good luck!

-- MB
Received on Sun Aug 23 1998 - 10:35:15 BST

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