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Power consumption - JAMMA beasts

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johnrt:
This is Dragon Breed. A beast of a JAMMA board. It's 3 PCB's sandwiched. It seems that my cheap ebay arcade PSU (http://www.ebay.com/itm/191214360616) can't properly power this board. The 5V drops to below 4.5 V when connecting this, so the board doesn't start. Is this gonna be a problem if I purchase a proper PSU? And what PSU do you guys recommend?

Nephasth:
Turn up your voltage on your power supply. White knob on top.

johnrt:

--- Quote from: Nephasth on January 28, 2015, 04:04:48 pm ---Turn up your voltage on your power supply. White knob on top.

--- End quote ---
That didn't help unfortunately.

harveybirdman:
Is the JAMMA harness going straight to the power supply?  What gauge are the 5V wires?

johnrt:

--- Quote from: harveybirdman on January 28, 2015, 04:21:36 pm ---Is the JAMMA harness going straight to the power supply?  What gauge are the 5V wires?

--- End quote ---
Yes, and the 5V reads 5V in idle mode, but drops to 4.5V when connecting this board. I have other (smaller) boards that works fine with this PSU and then it also reads 5V. I believe that this board consumes more than 4 amps so the voltage drops below critical point.

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