Well, you key the radio and you get no carrier. Hold the button keyed and it will slowly start to climb in carrier. It may stop at the correct setting, say 1w on low but it bounces around like you’re trying to modulate it when you’re not. When you do, sometimes the power is low and sometimes it’s like it breaks loose and goes wide open like it should.
Weird.
And it’s very scratchy. Static. I’ve checked and even replaced the mosfets, pulled almost every capacitor and checked them, all good. The modulation transistor on the chassis and associated parts, checked and/or replaced. Same thing. Looked all over for bad solder joints, I’ve even mostly redone almost every joint in the board.
It’s the weirdest thing I’ve ever seen.