• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Lost a channel

I have an upgraded Audio Innovations Series 500 tube amp. An exuberant nephew bounced a tennis ball off one of the power tubes (an EL34). I examined it - it looked fine but it wasn't. It had a tiny crack. A few minutes into the next playing the valve burnt out (brief bright yellow fire) and this was accompanied by a very significant pop thru the left speaker. The left channel is now silent. Apart from replacing the valves has anyone got any idea what I should look at replacing to get some action out of this silent channel?
 
There can be resistors connected to some of the tube socket terminals that are damaged as well.
You'd have to unplug the AC, open it up, and check both visually and with a meter for resistance.
There could also be internal fuses, but likely just resistors.
 
Last edited: