I have no tx or tx light on key up. Rx is fine just no wattage and no light. So far I've replaced tr45 which was burnt and split down the middle and r220 which was burnt. I also replaced the 2sc2166 driver and both 2sc1969 finals with two 2sc2312s. While i was there I replaced the 2sb754 with an 2sb817 and both regulators with the 2sa1869s. Now i still have no tx and no tx light. I'm stuck and not sure why my tx is still gone. The guy I got the radio from said his grandson locked the mic down over night and it never transmitted again after that.