Donkey Kong 2 board version - NO image or sound

gus1971

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I need help!

I want to know why I am not getting any image or sound from my Donkey Kong 2 board PCB set. I installed a new power supply and verified voltage outtput to both baords. All the other plug connections are in there right place. The monitor turns on, the color on the screen is white, no image thou. The only thing I get is when I first power it up I hear what seems to be mario jumping.

What could this be? How can I repair?

Thank you all for you help.
 
No edge connector onLy rainbow connectors are being used. I verified each power lead.
 
Both Video AND Sound are generated at the monitor. Unlike other games where the sound is amplified on the game board, Nintendo games will not "play blind" if the monitor is dead. Your board is probably fine... or was before you started messing with it. You need to cap/repair the monitor.
 
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