Mania Challenge PCB issue

Robran68

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I have two MC PCB's and they both do the same thing. When you boot em up they just go to a blue screen. The one had been working for awhile but now all of a sudden has this issue. Tried swapping out EPROMS on the top board but no change and it's getting the right voltages from the PS. Is the top board the CPU board or the bottom??

Also I want to add that the one board will go into test mode but once it finishes the tests it goes back to the blue screen again.
 
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Mine used to do that way back in the day, first try it wouldn't start, turn off then back on and it was fine. I do believe one of the caps near a corner was damaged (maybe an electrolytic) but its been so long I don't remember.
 
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