Dave Downin wrote:
> Ok, I've been beating my head against a brick wall trying to figure out a
> problem on a Star Wars board set. When in self test, it reports EVERY single
> vector RAM and the vector ROM are all bad... everything else checks out (beep
> wise - no display).
>
> I checked all the vector RAMs and the ROM and they are all good, checked the
> 245's and 244's on the board... It finally occured to me to try the AVG board
> in another working set to see if the problem moved with the board... it
> didn't! Damn, here I've been going all over the AVG board and it looks like
> the problem is somewhere on the main board.
>
> So, anyone have any ideas where on the main board I want to start looking?
> What the hell would cause all the vector RAM and ROM to test bad but
> everything else fine?
Bad connector solder joint? Bad interconnect cable or board?? A difference in
ground potentials between boards??? (Dunno, just taking wild guesses here.)
Received on Tue Nov 30 03:07:54 1999
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