Help with ENGL Screamer 50

[Travis]

Hi everyone!

I have this issue with my engl screamer 50, I try to replace preamp tubes with new ones but the issue still there..

Some ideas ? Someone now is this is a typical issue?

Thanks everyone..

Link to the video:

20240820_174241.mp4

drive.google.com

 

[Travis]

Clean channel works fine

 

[Travis]

And If I turn on the lead boost the whistle is bigger

 

[Nostradoomus]

Troubleshooting

Tube Guitar Amp Troubleshooting

robrobinette.com