01-24-2011, 01:14 PM
Thanks Ron. I have replaced the electrolytic capacitors. I'm not able to get at paper caps buried in the tuner section. I've re-checked connections and components and everything looks to be where it should. There was a 'jumper resistor' that ran between the 2 6F6 tubes that wasn't on the schematic so I removed it. I've got to replace another resistor (spec is 9k 2w...reading at 14k). Of the 2 6F6 tubes, only 1 will glow blue (maybe more violet after looking closer). When I switch the 2 tubes, the other will go blue. It appears to be more about the socket? I tested both tubes and both are weak-marginal at best. Could bad tubes create the buzzing (definitely more buzz than hum)? I'm not sure this means anything but when I pull the tube from the location that glows and turn the radio on...silence. Replace the tube...buzz.
Bill
Bill