We have a DT-1 and troubleshooting indicates something is wrong with the PFDM. Haas will only sell the whole board for something like $400, but it is a simple circuit. I think I have it figured out (I think the transformer is bad), but would like to verify the voltage on a working circuit. Would someone with the PFDM feature measure a voltage? The easiest ground connection to get to is the negative side of C1. I would like to know the DC voltage on the side of R1 nearest the transformer. Or the AC voltage across the anodes of CR1 and CR2 (the ends near the transformer).
