Black Widow PCB not booting....

mtp66

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I have a Black Widow Pcb that will not boot. I have both good Gravitar and Space Duel working boards and a Space Duel Cabinet. When I plug the Black Widow in I get a constant clicking from the coin lockouts. Nothing else. Spot Killer is on, leds on Control panel flashing very quickly. Nothing in test mode. I have Swapped out the AVG, both Pokeys and CPU from my good Gravitar PCB and still have the exact same results. Anyone have any ideas where else I should look ?

Thanks,
 
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Just want to add that The ram chip at location n/p1 gets very hot after only a couple of seconds being on. I have not swapped this one out yet.
 
Swapped out ram 6116 from location n/p1 from my Gravitar board and spot killer is now off in test mode so it appears that at least that chip is bad. I get one or two small lines on the screen. Nothing in game mode. Maybe the roms are bad ? All of the other socketed chips are good because I tested them with the Gravitar board.
 
Swapped out ram 6116 from location n/p1 from my Gravitar board and spot killer is now off in test mode so it appears that at least that chip is bad. I get one or two small lines on the screen. Nothing in game mode. Maybe the roms are bad ? All of the other socketed chips are good because I tested them with the Gravitar board.

After swapping the RAM, do you get any tones in test mode? If you press the button on the utility panel to go to the next test screen, does anything happen?
 
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