Re: Asteroids and Deluxe PCB problems

Okay,

Now heres a weird one. On the Asteriods Deluxe, I've got it up and running.
Everything looks good but it has a very bright dot in the center and a line
from it that runs up to the right corner?? Self test does no do this only in
game mode. I checked all roms in my eprom programmer with good bins and they
check out fine.

    I changed all the 74ls191 in the y axis along with all the 157's because
they all were getting about 150 degrees.

    Any idea on the line with the bright spot?? I know its not the monitor
or roms.

Thanks,

Fred

----- Original Message -----
From: "Bryan Kruzynski" <tron@voyager.net>
To: <vectorlist@synthcom.com>
Sent: Friday, June 28, 2002 10:10 PM
Subject: Re: VECTOR: Asteroids and Deluxe PCB problems

> > Got ahold of an Asteriods cocktail today with an extra deluxe PCB.
> > Both PCB's have problems. The asteriods continues to reset with 2
> > diagonal lines through the test screen. Any idea's on this? Maybe
> > a divide clock chip? or should I start with the roms? They are the
> > Prom types. What eprom replaces these anyone know? I reseated all
> > chips with nothing changing. The deluxe displays nothing, but
> > gives a series of beeps. It's beep beep booop or * * - over and
> > over again. Do the deluxe's have beep codes or is this a strange
> > byproduct of the board having a bizarre problem.
>
> The Asteroids repair encyclopedia is always a good starting point.
>
> http://www.ionpool.net/arcade/asteroidtech/asteroidsrepair.html
>
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Received on Sat Jun 29 11:23:10 2002