Would installing a choke help SE hum?

[captntasty]

5Y3 from pin 4 to pin 6

550VAC

measure VAC across pins 2 and 8

5.1VAC

Here's the doc... voltages seem low compared to what you have listed.

[bnwitt]

Well the standard PT HT for a champ is 325-0-325 Yours is 269-0-280 so I'd expect the B+ to be lower as well.

You do have 12 watts going through the two 6V6GT's though I don't see anything really wrong with the voltages.

[captntasty]

So I went back to check the voltage on pin 5 of the 6V6 - seemed like it should be something besides zero - it actually measures 0.007VDC at idle and jumps around with input from the guitar up to 0.05VDC. This led me to one of the leads that comes off pins 5/6 to the master volume... BINGO! There was a bum solder joint on the pot - re-flowed it and good as new!

I certainly have learned a lot about my amp in the process. Thanks to all of you guys... I really appreciate the info you have imparted.

tubeswell - that link to Jack Darr's book is great - I'm reading it and it explains things so well - excellent.

bnwitt - thanks for all your input - it led me right to the problem in a roundabout way.

I feel like I just won the Super Bowl!

[bnwitt]

Way to go Idaho! Sweet success through tenacious application of stubbornness always feels great. Now its time to jam. By the way, pin 5 is the control grid or grid number 1. It is where the signal from the phase inverter goes into the power tube. 0 volts there is not unusual without a signal but good find on the solder joint.