V-Twin saturation problem

[Virolin]

Hi, I have a Mesa B. V-Twin with 2 12AX7A tubes. I haven't use it for a long time, and now Iam facing this problem.

When I move the knobs gain & master till half path (12 O'clock) Iam start to notice a saturation noise, that becomes more evident when rise the gain or master a bit.

I had cleaned the pots, but that is not the problem. I have swiched & replace the tubes with other 12AX7 and the problem is still there.

Iam guessing what it could be. Capacitors seems Ok & in good shape. they are not inflated. Maybe some OpAmp? Maybe a bad soldering?.

Any help is welcome.

Thanks in advance.

 

[Pantsleg]

I bought a v-twin pedal used and it was noisy like that. I just assumed it was common.