I've been trying to get this Spy Hunter up and running. It was running fine until I took the boardset out of the cab to put back the original eproms at 6D and 10D back to remove the freeplay eproms. Now it will do a few different things. Sometimes the music will play and there will be nothing but a weird character in the upper left of the screen. Other times, it will only boot to a bunch of R's that look like they are a repeating pattern with no sound. Sometimes only to a white screen.
I have checked the voltages to the board 5.10 and the voltages on the reset pin which fluctuates from 4.5 to 5.25.
I have put back in the freeplay roms and it does the same.
I have swapped out the original PS for another known working one with the same results.
Any ideas? Could it be the interconnect cables? The large blue caps in the power brick?
I have checked the voltages to the board 5.10 and the voltages on the reset pin which fluctuates from 4.5 to 5.25.
I have put back in the freeplay roms and it does the same.
I have swapped out the original PS for another known working one with the same results.
Any ideas? Could it be the interconnect cables? The large blue caps in the power brick?

