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From: v087mxgb@ubvmsa.cc.buffalo.edu (Shawn E Thompson)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: Strange Problem -- HELP!
Message-ID: <51590@eerie.acsu.Buffalo.EDU>
Date: 15 Dec 90 07:42:21 GMT
References: <13679@chaph.usc.edu>
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In article <13679@chaph.usc.edu>, dchun@aludra.usc.edu (Dale Chun) writes...

could be (never heard of a grounding loop......sounds like
imaginary technobabble :-)    )

its so hard to make conjecture sight-unseen, BUT....

I've had TWO similar prob's ...AND I also use an
above board (and an inboard).


First time, a ribbon cable was at fault.

Second time, board had a short in it. When the cover
was screwed in place, it was applying load to the 
board, and flexing it (minutely) enough to induce a
open circuit somewhere...


SUGGESTION, try putting the cover in place, WITHOUT
tightening, that way the ground will still exist,
but you can check for a MECHANICAL cause........




best I could do :-&       (thats a sheepish grin sideways)

Shawn E. Thompson "..my sig file was so long, I'm not even allowed a quote..."
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