I had a similar issue where one of the legs of the IR3109 had a cold solder joint and made one of the voices fail intermittently. Adn while you are at it maybe get a socket in there and desolder 2 of them so you can swap them around? They take a bit of heat and seems to be quite sturdy. I socketed a...

Anyone have a used/new kit lying around to sell? Seems like Synthcom is down for good and I need to source one.