I have a pulled MPU -35 that I am wanting to repair. I have tried to work on this myself using pinwiki once before. I have replaced all sockets and have a set of new burned ROMs. The board has also be jumpered to use these new ROMS. Also to note that this board had no battery corrosion what so ever on it. But the LED still stay locked on. I have also tested the CPU and PIA chips to make sure that they are good with another board.
What I would like to do is start from scratch, but I'm not sure where to start.
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