G'day folks,
I remember fixing a problem just like this on a Tempest cocktail. It was
the MC chip (not the LF chip) in the Tempest PCB AVG...sorry for the vague
references. I don't have access to any documentation while I'm writing this
email.
Have you checked the monitor in another game? That'd be the clencher.
Steve Ozdemir
ps - You might want to check the leads going to the MC chip also.
-----Original Message-----
From: Bret Pehrson [mailto: ]
Sent: Thursday, September 07, 2000 9:23 AM
To:
Subject: RE: VECTOR: Tempest video problem
> (I asked one of my EE professors about it and the best answer he could
> provide was that sometimes transistors will have strange and unpredictable
> behavior when they get old)
Hey, I've seen that same behavior in EE professors! Whoops -- I should have
posted this to VECTOR.SMARTASSREMARKS -- sorry.
> -----Original Message-----
> From:
> [mailto: ]On Behalf Of jeff hendrix
> Sent: Thursday, September 7, 2000 9:34 AM
> To: ' '
> Subject: RE: VECTOR: Tempest video problem
>
>
> I had a similar problem on a star wars with a WG in it.
> It would draw half way up the top half of the screen, then wrap
> back around
> to the middle. (the top of the screen ended up back near the center)
> Replacing the deflection transistor fixed it.
> (I asked one of my EE professors about it and the best answer he could
> provide was that sometimes transistors will have strange and unpredictable
> behavior when they get old)
>
> -jeff
>
> -----Original Message-----
> From: Rich Gopstein [mailto: ]
> Sent: Wednesday, September 06, 2000 7:32 PM
> To:
> Subject: VECTOR: Tempest video problem
>
>
> I have a friend with a Tempest which has a strange video problem. The
> monitor is a WG6101. The image is missing from the left side of the
> monitor (actually the upper half of the un-rotated monitor). The strange
> part is that instead of the normal deflection transistor problem, the
> missing left half is folded over on top of the right half. The vectors
> themselves look normal except for the folding problem... Any ideas?
> Thanks.
>
> Rich
>
>
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