#1
So i've had my Blues Junior for about 5 or 6 years now and i ****ing love it. It has seen so many gigs, been pushed around, and been played very loud.

about a year ago i changed the tubes because the sound was starting to get a little crackly. It sounded great again.

I've started gigging a lot recently, and just today it has started to play up. It sounds like someone is playing with my tone knob on my guitar, i've recorded a sample:

[forbidden link]

Anyone recognise this problem? The tubes look fine, the preamps maybe look a little dull, but they are still glowing.

Any help would be appreciated.

Cheers!
#2
Light isn't an indicator that tubes are working. Start by replacing the tubes. You should have a replacement set anyway, plus it's the easiest and most useful diagnosis you can do.
#3
have you ever changed the tubes in 5 years? ever?

change the tubes. its time.
Carvin CT624
Walden G630ce Acoustic
Carvin V3M, Avatar 2x12 WGS Reaper, vet 30
(crybaby, Fairfield circuitry Comp, GFS tuner, Vick Audio 73 Ram's Head, Xotic AC booster, lovepedal trem, TC Flashback, PGS Trinity Reverb, Walrus Audio Aetos power)