MK4 Board PRO????

JP1

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I have an MK4 board that does not work. It came in a dedicated mk4 cabinet but the guy I purchased the machine from said that his transformer quit and when he replaced it that the MK4 board never worked again

He had replaced the board with a mk3 pcb and it was working fine (till i mess up the montor).

I tried the MK4 board in my mk3 Cab but cant get any picture or sound anything. (the 4 LEDs on the board light up but no video to my screan just grey flickering. No sound either)

Any Ideas on checking or is there anyone that can repair this pcb? or at least test and let me know if it the cabinet or the board that is a mess?

the pic below is a pic of the board and the marker is pointing out the 4 leds that light up
 

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Try removing the CMOS battery and powering it on, if nothing happens, install the battery again while the PCB is still on. See what that does.
 
make sure all the chips are fully socketed (push down on them firmly), also try tapping on them or pushing down on them with the game on see if that changes anything. don't forget about that altera chip
 
what if it's bad game roms? (the ones with the 2.0 labels on them)

I've seen it where it grey or black screens on various other games if those aren't right.
 
Tried all those things but non of them worked....anything else befor i look at perhaps a new chip set.
can anyone test this board and perhaps be able to fix it?
.
 
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