Star Tech Journal JAMMA test card

KenLayton

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About 20 years ago, Star Tech Journal (the coin-op equipment repair publication) was manufacturing a Jamma test card. It was inexpensive and you could plug it into any Jamma cabinet to verify power supply, switches, speaker, and monitor wiring was good.

If you were wiring a cabinet from scratch, this would be very helpful in case you made a major error in that you would only damage this cheap card and not an expensive game board.
 

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Closeup views of the various sections of the test card.
 

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More closeups of the board.
 

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Something like this was being sold on eBay by that guy who makes all the JAMMA adapters (yaton62?). Can't find it now though.

This is the one he was selling on eBay...

http://www.arcademvs.com/testboard.htm

testboard-1.jpg
 
I bought that green jamma test card a couple of years ago, and it works perfectly fine! I had no problems at the time with the seller.
 
Do the power LEDs light up only at exactly 5v, 12v and -5v or there is a range of values? That would be good to know...
 
Do the power LEDs light up only at exactly 5v, 12v and -5v or there is a range of values? That would be good to know...

They light up with any voltage, because you don't want to set your power supply with no load.

You can use the passthrough version with voltmeter for that though.
 
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