One of my tubes is out!!!

[newmesa]

I just noticed that one of my tubes is not lit up...the last EL34 next to the Largest 2 tubes....what can this mean? Is the tube just bad? :shock:

 

[theroan]

Probably the tube is out. To test, dont plug anything into the amp and turn it way up. Use a Q-tip or pen, something that wont break the tube and lightly tap it. If some wonky noises come out, you need a new tube.