Hi David,
With the ATU in bypass, does the meter show a PWR/SWR reading when you transmit?
If not, then check that injecting a DC voltage on the Stockton bridge diode D2 (Cathode) shows a reading on the display. With around 2.7V on the cathode, the meter should read about 10W.
If this doesn't work, then check the potential divider R4 and R21, there should be 0.9V on the PIC with 2.7V at the D2 (cathode).
73, Dave
