Re: Asteroids no video

I havnt had too much experience fixing HV failures, actually I havnt had any. I
have only worked on circuit boards for the game. HV is located on the left or
right side of the monitor chassis? I am thinking left. Can this HV diode be
found anywhere else besides in a 70's B&W TV set.? Thats not something easy for
me to find. Is it something that is not made anymore.?

 Dan Piraino

John Robertson wrote:

> That sounds like a HV failure. Often the HV diode. Condensation forming on
> the HV lead might have drawn to much current through it. I would have to
> wonder if this is the customers fault. After all you should NEVER plug in a
> electrical device after it has been outside in the cold until it has warmed
> up to ambient room temperature. Did the customer plug it in as soon as it
> was brought in? There is the problem. The solution is to find out if the HV
> cage is producing secondary voltages (400VDC and 90VDC come to mind) and if
> so, then you need a new HV diode. If you find a B&W TV from the 70's it
> should have this diode in it ready to be stolen and used in the game...
>
> John :-#)#
>
> At 04:09 AM 27-12-00, Dan Piraino wrote:
> > I sold a game to a customer and after keeping it outside in his
> >cold garage for three weeks he brings it in his house to play with it.
> >It works fine for 20 games then the objects on the screen get really big
> >and then the video goes out. There is game play and sound but no video.
> >I believe something shorted in the board ,but what.
> >Thanks,
> > Dan Piraino
> >
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Received on Tue Dec 26 15:49:07 2000