Re: missing video lines on centipede?

Thanks for the tip! I didn't know you need to power up in self-test
mode; I don't think the manual explicitly states that.

I just tried it, but there were no beeps or other error indication. My
next step is to stare at the schematic and see if I have an epiphany,
but I kinda doubt it....

Rod

Al Warner wrote:
>
> Hi Rod,
>
> I had some weird problems with the board I had in mine and it ended up
> being a bad RAM. Have you done the self test with the machine turned
> off first? Throw the switch, turn on the game, and listen for tones.
> Look at the manual for how to interpret.
>
> The self test work differently from powerup than when it's on.
>
> Good luck - report back!
>
> Al
>
> Rod Spade wrote:
> >
> > My Centipede is missing the left-most edge of the display: The left
> > column of mushrooms shows only the right side of the mushroom, and when
> > the centipede bounces off the left side, the left edge of the turning
> > centipede is cut off. It's completely black, as though the monitor just
> > isn't displaying those scan lines. (I believe the left side of the
> > screen is actually the top of the monitor.) I tried adjusting the
> > display size, and that didn't help.
> >
> > So I hooked it up to the monitor in my Ms Pac-Man, and it looks exactly
> > the same! But in MAME you can definitely see clear to the left edge of
> > the left side. So either both my raster monitors have the same problem,
> > or it's actually an issue with my game board. But I don't get any error
> > indications when I go into the self-test screen.
> >
> > Any ideas??
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Received on Fri Dec 27 12:36:17 2002