It was the cable going to and from the reverb tank. After swapping tubes and having the hum problem, I began tapping and found that tapping and moving the reverb tank resulted in the hum/no hum. I found the 4 tab connector loose. I went to Radio Shack and bought a better connector.
So, when you get the reverb tank you can check that as well. My tank sounds even better now than it did before.
You found your issue but this is a common issue for another reason .... A lot of folks think this is tubes since it comes and goes but in most cases it is the ground on your wall and noise comes and goes on the common ground.
Try a ground lift .... one of those two prong adaptors on the reverb unit .... I bet you find the problem goes away.
Eddie: Good gravy, man! What are you thinking?
Aug 15, 2015 8:50:28 GMT -7
Pete aka shouldb: poodle, you are TOO KIND! No, really.........
Aug 17, 2015 4:24:47 GMT -7
enrdes: I'm from Rome - living now in Milan but spent my first 30 years in Rome - I'll check the quality of latte macchiato for you guys as I'll be back there with my strat in a couple of weeks for some vacation.. :-D
Aug 17, 2015 14:42:26 GMT -7
enrdes: If you guys wanna see some high quality blues lives for very little bucks there's a pub in Trastevere called Big Mama, I used to get the yearly card in the 90s : http://www.bigmama.it/
Aug 17, 2015 14:48:14 GMT -7
Don: ... the road to Michigan
Aug 20, 2015 4:48:24 GMT -7
"Z" Steve: Rose and Valerie, screaming from the gallery!!!!!!!!
Aug 20, 2015 10:27:14 GMT -7
poodle: Truth: I'll never be featured on the cover of Guitar Aficionado.
Aug 20, 2015 13:58:37 GMT -7
poodle: or any other guitar magazine for that matter....
Aug 20, 2015 13:58:52 GMT -7
Aug 23, 2015 13:00:34 GMT -7
doctorice: That's a darn shame, if you ask me, Ian.
Aug 24, 2015 12:06:05 GMT -7
poodle: Maybe I'll get a mention in "Couch Machine Quarterly" or "Guitar Abuse Weekly"
Aug 24, 2015 13:11:18 GMT -7
poodle: Careful with that ax, Eugene
Aug 25, 2015 21:12:51 GMT -7
Maddog: Well, I guess to sum it up, you could say, there's three reasons why there's so little crime in Mayberry. There's Andy, and there's me, and, [patting his pistol] "Baby" makes three.
Aug 26, 2015 18:14:44 GMT -7
Joel: Gimme three steps ....
Aug 28, 2015 4:35:00 GMT -7
"Z" Steve: They call me debris.........I keep blowin down the road.
Aug 28, 2015 8:42:28 GMT -7
darasick: Hold me closer Tony Danza...
Aug 28, 2015 12:18:11 GMT -7
freddieg: There's a bathroom on the right ....
Aug 31, 2015 18:54:08 GMT -7