Have you check Q19 & Q20 on the RF board? Q20 is the per-driver. The RF signal is sent to the Final PA deck via Q19 & Q20 via the T/R relay into the Filter Board. The Filter Board has a number of relays and depending on the band you have selected will depend on which relay is active.Hello, sorry to wake this old thread. I have an output issue on my 430 where I get no output. I tested final transistor vias and removed and tested the output transistors as well. Are there other common failure points on final board. It receives great BTW. No output on any bands.. thanks so much!!