So, I am having occasional static in the right channel. It is not always there, but I comes on at random times. I have ruled out everything that comes before the Crack, and it isn't the tubes. Loose solder joint perhaps?
I suppose that means you swapped the incoming interconnects? If so then move on to the tube pins and socket. Clean it by pulling and inserting the tube 6-10 times. Easy mechanical cleaning.
Then run volume control up and down the full rotation 6-8 times.
If it persists when the scratchy noise comes back tap the top plate. If it is a marginal connection it will change.
Sorry this reply took so long. I tried it all, but the only thing that sometimes makes the static go away is a good, sound tap on the right side of the amp. Loose joint?
Yes, loose connection somewhere. Rewetting the solder joints is a good remedy.
Since it is right channel only I wouldn't worry with the power supply and left channel. But start at the input RCA jacks and move all the way to the output jack on the right channel.
