I have no experience with this, but I am willing to bet that it's the
ribbon cables that go from the circuit board to the LCD. I've known them
to cause this. First, check that the glue or tape that holds them to the
board didn't undo itself. If not, I have no idea how to replace them,
since they are attached right onto the LCD panel.
>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
> RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
> Phone: (502) 756-1749 Data/Fax:(502) 756-6991
> Email: rhblake_at_bbtel.com or rhblake_at_bigfoot.com
> Website: http://members.tripod.com/~RHBLAKE/
> ICQ UIN #1714857
> AOL Instant Messenger "RHBLAKEMAN"
> * Parts/Service/Upgrades and more for MOST Computers*
> --------------------------------------------------------------------
>
>
>
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Received on Sun Jul 12 1998 - 10:37:44 BST