ZAXXON to Jamma - no sound, screen flipped

PYJAMAGROOVE

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Hello,
I've bought an oryginal Zaxxon PCB set ( 3 board version like this one: http://www.gamesdbase.com/Media/SYSTEM/Arcade/PCB/big/Zaxxon_-_1982_-_Sega.jpg )

After hooking it to my jamma harness with my jamma adapter (mike's pinout) I get no sound and my screen is flipped. Other than that it works.

Does the sound board need supplementary power somewhere? (there are several connectors). And is there a way to flip the screen without hacking my monitor?

Thanks for any help.
 
Does your JAMMA cab have -5V? I know some games won't play any sound with out it (DK Jr for example).
 
Check your JAMMA harness and see if ALL of the power and ground pins are connected, especially the ones where you wired your JAMMA adapter to.

Also, did you check the additional notes on video and sound at the bottom of the mikesarcade pinout?
 
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