Help with my HT60

[Travis]

Hi, I have a problem with my HT 60 stage.

Works fine but after a time playing It It start pops.

And one valve do this (look video)


Some recommendation??

Thanks everyone

VID_20211202_121744.mp4

drive.google.com

 

[HamishR]

Um, yeah - I wouldn't use that tube any more. Actually it may be the one which is not red-plating which is the cause. But anyway it looks like you need some new power tubes.

Have a look to see if there are any burnt-out resistors around the tube socket. Anything which could cause a short too. Any burn marks, scorch marks? Make sure to check the bias when installing the new tubes.