Mk4 problem

Holleywierd

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Donor 2014
Joined
Aug 15, 2010
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Silverdale, Washington
Well I have been using my mk4 cab to play other various jamma boards. All of those boards have worked fine. They all used only two or three buttons out of the six. Now I went back to wanting to play mk3 board and only the top three buttons work for each player. Did a diagnostic test and nothing registering for those buttons in the test mode. I lifted the CP to reset the connectors but no luck. Any ideas? Thanks
 
You should have a Player 3 harness that connects to the PCB.
 
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