04-18-2014, 11:20 PM
Hey guys- The osc and antenna coils are OK. After rechecking all caps and resistors, I found a resistor that was 1K instead of 1M (my fault of course). After replacing, it started making sound...buzzing, which changes sound with tuning. I checked the voltages for the Output tube; all normal. The 77s seem to be a little low on voltages; Plate =69 (should be 100), screen=25 (should be 60), if I'm checking it correctly. The tube circuit still confuses me. I am probing Pin#1 (hot) with Pin#2 (for Plate, as per scheme), Pin#3 (for Screen as per scheme), etc, with DC voltage check? I checked the Rectifier using AC voltage since it is still AC at that point. Also, I cannot check the 77 caps at all because the speaker starts screaming at me if I touch either one. I appreciate all of your input. Thanks
bd
bd