10-03-2015, 04:07 PM
Well, I took it off of the punishment shelf for another look. I tried tube swaps again. It was the 19C8! I replaced it and the hum was completely gone.
Thanks for your help everyone.
Thanks for your help everyone.
Eric
Lake in the Hills, IL
Member: Philco Phorum, ARF, ARCI & Radiomuseum.org