Re: Omega Race CPU repair

I can sell you a good photocopy of the schematics, as for the WDOG, you
can disable it for testing purposes, I NEVER have the monitor hooked up
until the scope shows good signals on both X & Y axis. Put game board in
TEST so a crosshatch would be visible, then check the outputs. Also this
game has a lot of problems with battery corrosion, you need to replace
any IC sockets that have any sign of the alkaline reaching them, also
traces can be etched away, a continuity test of these would be good
around the battery area.

I assume the board voltages are all good and were measured on the game
board...

John :-#)#

ddhumphr wrote:
>
> It's time to try to repair one, well hopefully two, of the three non-working
> board sets that I now have for Omega Race. The problems with this thought are
> many. The only schematics I can find are those four "TIF"s on the net. Does
> anyone have a bit more of the manual scanned? From what I can tell, just
> looking at the board, there is some circuitry that I recognize from the
> Asteroids CPU (?!?) down there by the DAC's. Did some engineer leave Atari to
> produce this for Midway?
>
> It's got the same old WDOG reset problem that you've all probably seen many
> times, but I'll be darned if I can find a bad ROM. Any repair FAQ out there for
> this CPU yet?
>
> ...heck anyone selling the doc. set?
>
> Ace

-- 
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