Scramble PCB + Super Cobra PCB probs

Luddite

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I have 2 PCBs that have different problems. I am wondering if there is an easy fix or if I can swap parts to fix one of them. These are both used in the same cabinet and have different problems.

The scramble PCB works perfect except there is a hum in the speakers. I can hear all the other sounds, bombs etc but there is a high pitch semi-loud hum that is constant.

The super cobra PCB was working but now just starts and resets over and over. The Super Cobra is the black box version with the Konatec black box attached.

Thanks for any help.
 
Are you using these with the original PS board in a stern cab or has this been JAMMA-tized? If original, you may want to check the two rows of power pins to see if they wiggle. I had to resolder mine to get my Scramble to stop being flakey (had sound and coin up issues)
 
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