Omega Race - minor graphics glitch

hatster

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Hi all,

im the lucky new owner of an Omega Race, was dead when it arrived. I have replaced all the 2114 ram and it now plays, what an awesome game ;) BUT.....

when the ship is pointing north ease, a lot of the graphics dis-appear and i get a diagonal line accross the screen. North right through to west are perfect, but as you get past west you get the line, one more notch on the spinner and the line gets a little thicker, then one more notch and gets thin again, then one more notch and all back to normal.

anyone got any ideas where to look ? I have blown 2 new vector roms and its still the same :|

Thanks in advance,

Kev.
 
now not running

ok, so today i was going to take a quick video of the problem in case anyone can help me (please !!)

powered up and now dead, spot killer on. if i put a logic probe on the reset pin of the z80 it is resetting about once every 3/4 of a second. if you try and coin it up it makes half the coin noise before resetting.

Im really thinking this is a rom issue (along with the graphics fault), anyone else got any suggestions ? I dont have any spare 2732's to burn. I took the eproms and compared them to the mame roms and they check fine, but of course this isnt a defo good sign.

As i said before I already tried with 2x new 2716 for the vector roms and it made no difference to the original problem.

please help !
 
On mine I started near the battery and replaced sockets until I seemed to have gone beyond the range of the damage. Pry off the plastic frame and then you can remove each pin individually.

What does self-test tell you?

Here's an Excel doc you can use to check for continuity between pins on row 1 chips.
 

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  • Omega Race acid trips.zip
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Congrats!

OR is a tough one to rebuild with all that acid damage. I don't want to touch 'em.
 
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