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ok, sounds like squelch is working. good.


same test set up, but now measure the DC voltage on both sides of the ON/OFF switch. (on volume pot)

with the switch on, you should read the same voltage on either side of that switch.

what is that voltage?


after doing that test, unsolder the leads of the driver and final transistors from the PC board as previously instructed, and measure the DC voltages on W23 just like you did before.

did the voltage on the Collector change?


the voltage drop on the Collector of W23 is concerning, and might mean a short somewhere.

LC