owner-vectorlist@vectorlist.org wrote:
> Is there an easy way to know if the AD561J DAC(s) on an asteroids
> (or similar type) board need to be replaced? Like is there a common
> symptom of when they fail versus say something else in that same
> circuit area?
>
> Do the DACs tend to completely fail, or partially fail?
>
Scott,
On the Asteroids boards I've seen with bad DAC's ( 4 total, so I'm no
expert) the video is still there but corrupt. And the corrupt video was
"repeatably" corrupt: corrupt in the same area and in the same way. When
put into test mode the grid was out of whack but the picture was clear and
solid. Depending on which DAC was bad, the horizontal or vertical lines
looked like dots. The diagonal lines look jagged.
Sean McLachlan Salt Lake City, Utah
rgvac@classi-find.net Video Game n00b since 2001
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Received on Mon Sep 12 10:45:03 2005
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