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ARGH!

I tried installing the solder-in version of the Marpet Xtra-RAM upgrade board, and I think I screwed it up. All I get is a black screen with a white border. :(

I sent it to ATY Computer to reinstall the upgrade board hoping that maybe my installation wasn't too good, and it would be all fixed with a professional installation. Unfortunately, it still didn't work. :( He tried swapping MMU, Video Shifter and TOS chips from a good machine, but it still didn't work. He thinks I shorted something out when I did my not-so-good installation.

Anyone have any ideas what could be wrong, or how to diagnose the problem? Thanks.
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 Dead Atari 520STFM new atarian1 06-21-2004 05:28 
 RE: Dead Atari 520STFM new Roop 06-21-2004 15:05 
 RE: Dead Atari 520STFM new atarian1 06-21-2004 23:45 
 RE: Dead Atari 520STFM new Anders Eriksson 06-24-2004 18:49 
 RE: Dead Atari 520STFM new atarian1 06-27-2004 21:56 

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