Donkey Kong w vertical lines and some sprite garbage

AtomicBomb

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Donkey Kong w vertical lines and some sprite garbage

Has anyone ever seen this? I have what looks like retrace lines but they aren't constant. Screen/Brightness pot affects them as they would standard graphics, but I can't make them disappear without blowing away my entire image. They also vary in brightness and color. It isn't the monitor or power as I have a DKJR board running on the same setup perfectly (also pictured). This DK board also has some garbled sprites appearing at the top of the screen. These react to whatever is on screen. Ideas?
 

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