Re: video problem on Space Duel

Update of this:

I found that the 555 on the board next to the processor is getting extremely hot.
Replaced it and the new one has the same issue. I can hear some white noise from the
speaker if on turn it up. Again, same results both cabinets. Other boards work fine.

Perhaps a bad 6502a? doubtful to me..

Rodger Boots wrote:

> Joe Bachmann wrote:
>
> >Rodger,
> >
> >Good idea. I checked for ripple and couldn't find any. If I put my BW board in this
> >cab, it works fine. If I put the SD board in my BW cab, I have the same issue.
> >
> >I replaced 3/4 of the TL082's no change, but maybe could be the fourth?
> >
> >Could my pots just be bad?
> >
> >Thanks,
> >JB
> >
>
> I doubt it.
>
> Ever try bugging (term used at my Real Job for a continuity test) board
> ground to monitor ground? It's pretty unlikely, but the monitor ground
> contact on the game board connector might not be connected to ground.
>
> I suppose the other possibility is that power supplies generated on the
> game board itself could be oscillating due to an open capacitor.
>
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Received on Mon Sep 9 22:57:45 2002