01-06-2015, 02:38 PM
Hello all, I have my Philco model 19H chassis 128 here with the schematic showing the volume control pot with a part # 33-5000. In my radio is a part # 33-5425-2 and stamped under that is 1-230. This is a tapped pot, but the schematic says it should be "20K ohms to tap" but mine is 200K to the tap. The overall value is correct, 350K. I took the pot apart and cleaned it, it appears and checks out to be in good working order. I am not sure if this was ever replaced, but the mystery here is that there is a 10K resistor going to the 4 point bass compensating tone control switch that is supposed to go to the tap on the volume control but was never connected. I am going to assume there is a typo in the schematic and connect it. Any thoughts would be appreciated, thanks!