learpilot2
Member
I am getting a loud speaker hiss/squeal from the speakers of my pinbot. The squeal varies in pitch with the cycling of playfield lights. The loudness of the hiss/squeal is directly porportional to the volume control. Greater up turn up the volume, the greater the hiss. I checked all the pcbs for screws and grounding. They were tight and grounded. Any ideas? Hiss is present in play mode and attract mode.