Hi all. This radio rx fine.The prob start instant.I removed the stinger Has a Expo A+and a trb1 eco board.Replace the Driver 2sc1957 and Final 2sc29829with no aval.Went on ahead and chaned the tr21 in my case q21r resister r 100 and r101 the red tx led light but no output has audio pa side and though talk back the radio has not been screwdivered to death. I did all the work to it in the first place so i know the history of it Woltage look right tx and rxar pll. Both regulators are working volage to the driver and final any help all will help been 10 years sence i have worked on radios have forgoten alot. Thanks Ben :headbang