I have an upright battlezone with graphics issues. While playing the game, the image of the mountains will intermittently appear along the bottom of the screen where it says atari as the monitor image quivers. It happens during attract mode as well. All connections have been reflowed an cleaned, I tried another monitor(working perfectly)and same thing. I did notice that 4 of the large chips on the math board was very hot to the touch. All voltages are correct. Any ideas where to start? Board adjustments does not change the problem.


