At 10:10 AM 3/20/05 +0000, you wrote:
>
>On 20 Mar 2005, at 10:03, Edwin P. Groot wrote:
>
>> Hello all, this is my first post as I'm new to the list.
>
>Welcome!
>
>> I found in the trash a fat Mac that gives a checkerboard pattern
>> when
>> the power is applied. There is no startup tone audible. The pattern
>> is
>> about 15 squares wide and 40 squares high. Any ideas on repairing the
>> problem (besides buying a Macintosh 128 logic board)? Here is what I
>> have
<<<schnitt>>>
>
>Eek! Debugging an upgraded board like that is always going to be a
>pain.
>
I read in an archive the horror story of a man who took the component
pulling and reseating a bit to far with his Mac Classic. He actually
desoldered and resoldered EVERYTHING he could find on the board! It didn't
solve his problem, and he complained that he forgot the orientation and
position of some of the components. Eeeeeeeeeeeeek!
>Personally, if the display is sharp, and there's no bad screen burn, so
>it's worth saving the Mac, I'd go for the replacement logic board
>route. A 128Kb board would be nice and authentic; a 512Kb board would
>be cheaper, and more useful!
>
>If you can't find a board in Germany, contact me in the second half of
>April, and I could probably find a 512kb board in my garage and ship it
>to you for the cost of postage. (I'm in the UK)
>
Display is sharp and responds well to the analog board video
adjustment pots. Will try other suggestions on the list, but I shall keep
your offer in mind. Thanks!
Regards,
Edwin
>best wishes,
>
>Stuart
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