I took my amp to Graemestock where it got a bit of a workout by Cannons band and whoever else jammed. Then took it to the Farm Blues jam, brought it home and dumped it in the room. Set it up and turned it on and when I do the speaker emits loud cracking noise and the wall behind the amp was lit up with blue and orange lights. Switch it off, swing the amp around and turn it on again and one of the valves is going ballistic, bright yellow and blue lights coming out of it, the rest not even lighting up.
not my amp but looks exactly the same, its the valve on the far left, one of the 4 large EL84s (Sovtek)
Any ideas? ☹
