Troubleshooting

Sound disappeared

All of a sudden the sound disappeared while I was playing the JTM45. Checking chords, unplugging pedals etc did not reveal anything. I could check my cab with another head I had.

There was some sound so it was not completely dead. If I turned up the PPIMV I could hear some amplification, but not much.

I read that if the power tubes are really broken, a popping sound might be heard. An I believe that no sound at all would be produced.

Luckily I had some older preamp tubes that I knew was working, so I checked one by one. It turned out that the third preamp tube was bad.

All tubes was glowing so no hint to which was broken.

I will test this tube one more time to make sure It’s not just a connection issue. Then I will see how TubeTown handles warranty 🙂