LCD repair

From: Russ Blakeman <>
Date: Sat Jul 11 23:46:14 1998

No high voltage on an LCD, it's a low volt device that the presence or lack
of voltage causes the cystals to align or scatter, causing balck or clear.
There's two types and I don't need to go into the diffs in field effect and
the other.

Your outlook on what might be at fault is good. This is one of those things
that someone that does this a lot could probably snap their fingers and have
the answer. I personally haven't had that much experience with that machine
and would have to dig in the schematics and do some hands on to try to
isolate it.

Doug Yowza wrote:

> OK, hardware gurus, how about some remote diagnostic help: PowerBook 160
> (my first and only Mac), a bunch of black vertical lines of varying width
> on the LCD (different patterns on the two panels that make up the
> display), but otherwise the display looks good (all the bits in the right
> place).
> Video RAM? LCD controller? Cable problem on the laptop side? Cable
> problem on the LCD side? Bad LCD? Repair FAQ?
> I have a volt meter, a logic probe, a fear of high current, but I enjoy
> the occassional high voltage zap. What's my next move?
> -- Doug

 Russ Blakeman
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Received on Sat Jul 11 1998 - 23:46:14 BST

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