-----Original Message-----
From: "Matt Rossiter" <rossiter@ni.net>
To: <rasterlist@vectorlist.org>
Date: Thu, 14 Jul 2005 15:14:50 -0700
Subject: RASTER: Need help troubleshooting Robotron Board
> I haven't spent alot of time troubleshooting Williams boards, so I'm hoping someone might be able to help me.
>
> The game won't boot up. It just comes up with a Green screen. No rug pattern or anything. Here are the tests I've done so far.
>
> 1) Ram test with Fluke 9010a - passed
> 2) E and Q circuit - looks good
> 3) Watchdog is stuck low - disabled the watchdog circuit, Same Problem.
> 4) Tried Swapping rom board. Same problem.
> 5) Tried swapping video decoder roms, Same Problem.
> 6) All voltages are good.
>
> This board was working perfectly for weeks, then suddenly died. So I don't believe there are any bad traces or connectors.
>
> Can someone give me some suggestions?
>
change the buffers,
and try to read the roms through the fluke, i have seen rom pcb's with bad ribboncable.
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Received on Thu Jul 14 19:27:54 2005
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