01-20-2021, 10:35 PM
Thanks Terry. Next time I'll make it difficult! I checked the voltages. pin3 -185v, pin 4 -2v, pin5 - 0V. removal of the 6f6 caused the plate voltage to go to 350v. All that being said there was a short to ground at the #20. I have worked on a couple other philcos with bakelite blocks and drillled out the center of the tabs and soldered replacements on the outside until I got the radio running. After that I removed the blocks and restuffed. This worked great on the others. I had previously drilled out the ground tab on this block but the short remained and after I discovered the short tonight, I could not drill it (or the #20 tab) out enough to get rid of the short. I removed it restuffed it and short is gone and plate voltage is now 235V. The hum is mostly gone and I put a 1000khz modulated signal on the antenna and it could be heard out the speaker. Its very low but did respond to the volume pot. Thanks for the schematic link. That is sooooo much better.
Andy
Andy