Chuck Guzis wrote:
On 25 Mar 2010 at 8:42, B Degnan wrote:
This is one of the original black connector
versions of the IBM
1904057 XM 407 display cards. It has 9114 RAMs in it, not socketed of
course, so I think if I can probe each RAM chip first to ID the bad
chip it'd be more efficient. I would similarly have to check the
74L chips. oy!
I know this is a stupid question, but have you scoped the sync
signals from the card?
--Chuck
I'm with Chuck, this sounds like a clock issue to me too.
John :-#)#
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