Looking for motherboard and wiring info for Lisa 1

From: Vintage Computer GAWD! <foo_at_siconic.com>
Date: Thu May 25 13:45:35 2000

On Wed, 24 May 2000, John Lewczyk wrote:

> I just picked up a non-functioning Lisa 2 (which was an upgraded Lisa 1) and
> have lots of technical documentation, but nothing on the motherboard and
> wiring between powersupply, video and motherboard/cage assembly. I'd like
> to avoid tracing it all out if this info is available.

The Lisa/Macintosh XL Do-it-yourself Guide has some good data on the Lisa,
but no schematics. I believe I have technical data on the Lisa, but it's
buried :(

> Also, it appears that one 120 pin socket on the motherboard is missing a
> connector pin, and there is some amount of blue corrosion on the tops of the
> other connectors. What's the best way to clean off this kind of (light)
> corrosion (oxidation)?

The blue corrosion is usually caused by the clock battery on the main
board (the one you see when you open up the back) that goes bad and leaks
all over the damn place. Some good suggestions have come up in the past
regarding cleaning it up, so I'll let the experts chime in (I know I have
that info saved somewhere).

> It appears to me that the motherboard socket that is missing one pin will
> need to be replaced. Anybody have any recommendations on how to best do
> this? The motherboard is a four layer board. I have soldering/desoldering
> experience, but I've never tackled an item with this many pins on a 4 layer
> board before.

Find another Lisa :) and use it for parts.

Sellam International Man of Intrigue and Danger
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Received on Thu May 25 2000 - 13:45:35 BST

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