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Jamma PCB sucking down the +5V?

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RayB:
Usually audio circuits use +12v for amplification. Check those readings too.

AE35:
Hey!

Yeah, the 12V is fine :(

Maybe I should look for a new Exerizer board!!

mgb:
I'm not sure if that board has socketed Rom chips on it or not. But if so, its worth it to pull them, clean the legs and reset them and see if that makes a difference. Sometimes dust and grime will give issues.
As far as ruling out a bad psu, when you put in another jamma board, were you able to get the voltage upto 5v?
I imagine at 4.2v, you'd be experience some problems like resets and garbled graphics.

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