once you get it fixed, do what I do to turn them on and off. I use a 6 holer zip strip. You know the kind you plug into the wall and then you can plug in 6 other pieces of gear into. I found in the old days, like on the FT 101 series, they had 2 switches , on and heater , and it was a real pain to fix them. so you spend about 10 bucks for a zip strip, or a little more for one with a reset button, and plug the amp or the power supply for the amp into the zip strip, and when the switch in the zip strip goes out, buy a new zip strip, no sweat, no problem and cheep.