Omaga Race issue

frytex

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I currently have a Omaga Race that is not working. I am getting nothing on the screen and no sound. The only thing I am getting is a constant blinking of the one and two player buttons. History on it so far. It has a power switching supply and the rom chips are getting 5 volts. The monitor is lighting up just no pic. 12 volts is coming from the linear power supply. I just got it so I think I am going to rebuild the power supply. Also when the coin counter is plugged in it just keeps running one nunber after another. Any help would be great. There was no acid damage and as soon as I got it I removed the battery from the game. It also seems when I turn the game off when it is still plugged in the red LED light on the board stays on?
 
Thanks that answers that. That helps but not the answer. Calling all Omaga Racer's no pic no sound just flashing lights player 1 and player 2. HELP
 
Ok so we now know it does not need the battery to run the game.(Thanks for the answer on that). So what would cause the player 1 and 2 lights to just blink. No sound no picture. All the ROMs are showing 5v on the proper pin. My game does have a power switcher supply on. Does anyone have this game with a switcher in it? Is this game ok with a switcher in it?
 
I have an Omega Race cabaret that is doing the same thing. Lights flash, coin counter clicks.

I have never gotten around to checking it out. I'm pretty sure it has the original power supply.
 
Omega Race is a lot like Asteroids. The game PCB is divided into two parts: the program side that handles inputs, scoring, and gameplay, and the vector generator which takes data the program has generated to figure out where and what to draw. The game will not work unless both of these are working. The third half of the board is the analog section that converts the results from the vector generator into actual voltages that are sent to the monitor to dictate the X and Y coordinates of the objects on screen as well as their brightness (Z). If this part doesn't work the game will 'play blind' which means coining up, sounds, and controls will be working, but no picture (and the LED on the monitor's deflection board will be lit, deactivating any drawing). Or it could be a faulty monitor just not showing the picture. But you're not there yet.

The LED on the board staying lit probably means the switcher is not actually hooked in to the power switch on the game, so it stays on (and therefore so does the PCB) whenever the game is plugged in. Wiring the supply for the switcher to the line filter will put it past the main switch (but not the safety interlocks), or you could wire it to the 120VAC supply taps on the big transformer.

Flashing P1/P2 and clicking coin counter sounds like the board is in a reset loop. First step is to remove and clean the legs of every socketed chip, as well as the edge connector of the motherboard and the smaller daughterboard. Make sure not to bend any legs while removing or reinserting, and don't scratch the board below the sockets by prying them out with a screwdriver (use a puller or be very careful). Then put it in self-test and turn it on and see what happens.
 
Any luck frytex?

I have a second set of boards I'm going to look at and I have the same exact problem. I do have one lone dot in the corner of the monitor, but that's it.
 
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