Fender TV Buzzing

[CardinalFan984]

I purchased one of the new Fender Bassman TV15 combos in march. This past week I let my friend borrow it (against my better judgement) and now it has a very noticeable buzzing/popping sound whenever I play, especially when lower notes are sustained. I have tested the amp with different input cables, with and without my pedalboard, through both jacks, even using different power cables and power outlets. I also tested each of the pots individually and it was still happening. Any idea what the problem might be?

The only thing left I can think of would be the tube, but I wouldn't think that it would play at all if the tube was blown or if there was a short somewhere. What's weird is that the tone of the amp is just as good as when I lent it to him, except there is the buzzing.

Thanks in advance for your help

[bongomania]

Could be he damaged the speaker by sending too-big spikes through it. Could be a loose wire or solder joint.

[RickenBoogie]

The speaker was my first guess, too. People who play with things that don't belong to them are often not concerned with how they treat those things. That's a shame, but lesson learned, I hope. Take it in and have it looked at, make your "friend" pay the bill.

[lbwdog]

Should be in warranty...

[christw]

Speaker or solder joint issues would be my first guess. Warranty first, fists and friends later.