Update:?
I started with NA5Y's youtube video "QCX Amplifier Troubleshooting".?
I dont have a scope so couldn't see rf on the input but double checked QCX+ was giving 21VDC on the little diode detector on the dummy load. With? the daiwa meter it shows 5ish watts into t he qrp labs dummy load. So Im going to assume I didnt whack the radio too hard. I could be wrong here becasue when I connect an antenna my power only shows 1 watt on? the Daiwa. Maybe the load is causing an effect or failure in the QCX+ 20m after all.
Moving on for now...I started checking voltages...
The first check was at the left side of R10 - 12.7 volts (as supplied by bench supply)
The second voltage check was at the top pin of the variable pot which is also the the 5v regulator output, IC1. - 0 Volts
Before I take this out and replace it, is there anything else I might need to check first. A) I want to be sure the component is bad, and B) a Mouser order is $8 shipping, so I certainly want to be sure as I can be. So if I can check anything else I might have fried hooking up backwards, that I can preemptively test, please chime in.
Thank you so much for your help.
Bryan, n0luf
