More reviving of an old thread...
I have one I'm working on, and when I put my DMM on AC mode and test the 5v line, it's showing 10volts? This is with a brand new power supply that is giving me the prescribed 5.2volts on the board.
What I would like to know is if I'm reading the AC wrong? Do I just check it with the DMM in 200v AC mode, and red to red, black to black on the board? I never really understand AC power testing. If I'm reading it right and I really am getting 10v AC on the 5vdc line then that would be a problem.
Are you sure it is 10 volts and not a decimal (or some other way your meter is representing what 10 is?) Are you getting any symptoms? Game not working? Etc?
