bad tube?

[azrockitman]

Well, my stereomour is not even technically well broken in but it seems that I'm reaching the conclusion that one of the tubes is bad/going bad.

I noticed severe volume discrepancy on the left channel tonight, and after checking all connections, and changing music sources, I thought I would try the simplest test and simply power it down and swap tubes.
Bingo, the right channel now is severely diminished. 

Only possibility is failing tube, right?

 

[galyons]

Yep! If the problem followed the tube, that's the likely culprit.

Cheers,
Geary

 

[jimiclow]

Is it the stock Sovtek 2A3? I wonder if Doc has a warranty on it.

 

[azrockitman]

Yes, it's one of the pair that came with the kit. 

 

[Mike B]

Mine were 3 db off right out of the box.

Replaced with a nice matched pair of EH Golds.  No more 3 dB.