5 watts in, the amp keys, and I get about 6 watts out.
Unless you are in a bypass mode, then very likely you have damaged or dead RF transistors.
In the schematic (page marked -25-) the resistors in question are R1 and R3. R1 is getting a lot hotter than R3. Anybody have any ideas? I have lifted the base and collector from Q4 and the transistor tests OK. Page 8 has the BLOCK Diagram.
Page 25 has the correct schematic diagram for your TPL model.
LOOK and READ the schematic, What is the purpose of the R1, R2, and R3 resistors??Do they appear to BALANCE the inputs to Q2, Q3, and Q4 ?
I have lifted the base and collector from Q4 and the transistor tests OKAY.
You have NOT tested Q2 and Q3.
Based on your VISUAL observation of R1 and R3, which transistor do you think is DEAD or DAMAGED ??
Why didn't you mention or observe R2 ?
... removing RF transistors from the circuit (PC board) is a pain.
YES, that is why the e-bench techs get the big $.