RE: Space Duel Vector Wiggles ....

At 09:37 pm 12 09 2003, you wrote:
>Dave,
>I'm no Space Duel expert, but I had an Asteroids that was doing the same
>thing. X vectors looked had high/low intensity issues, looking kind of like
>dotted lines. The Y vectors had a repeating jagged line. Andy Wellburn
>suggested I replace the Y DAC, in my case it was an AD651J.

Well I made some time to pull the game and have a look.

Scoping the boards in XY mode all seems fine, so I hooked up the monitor
again and it was working! but only for a few minutes. Tried the scope
again - fine, back to the monitor and bad again so suspecting the monitor I
fitted a different deflection board (that has different fault) no wiggles
here even when on for 1/2 hour.

  Note: the other Deflection board has a fault where it will not deflect in
the top 1/3 or right hand 1/3 of the screen, just squashes the picture up
... any ideas?

So I'm fairly sure that it's the deflection board ... so one of the new
components must be failing :o(

Help :o((((

Dave Langley
www.robotron-2084.co.uk

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Received on Fri Sep 12 20:09:26 2003