Problem with Exemplar 3910

Hi,

You may remember that I was asking about tubes for my 3910 recently. I figured it was time, but I also was motivated because I was getting noise out of one channel - sometimes a "thump" and sometimes a kind of "scratchy" sound. I've isolated the problem to the player, and I have tried two new sets of NOS 6829s with the same result. I have a call (voicemail) in to John Tucker, just a few minutes ago, so I'm certainly not writing to complain. Just thought I would ask if others might know what the problem could be in the interim.

Thanks for any thoughts.

John

p.s. I have not switched a set of tubes in the player yet, i.e., changing which socket they are plugged into. I haven't done that yet because the problem has occurred with 3 sets of tubes so far.