No distortion on Mark V

[gradyogle]

I turned my Mark V on and channel 1 didn't work, channel 2 and channel 3 had no distortion, but played at normal volume. It was just my guitar, head and cab. Does anyone know what is wrong with my amp?

 

[screamingdaisy]

Most likely it's a faulty preamp tube. It sucks, but it's the nature of tubes that they occasionally fail.

If you have a spare preamp tube handy an easy way to fault find is to swap 1 tube out at a time until the amp starts working.

Check page 51 and 52. They have a pretty detailed description of how to diagnose preamp tube issues;

http://www.mesaboogie.com/manuals/MkV_101005.pdf

 

[Jim Ed Love]

Most likely it's a faulty preamp tube. It sucks, but it's the nature of tubes that they occasionally fail.

If you have a spare preamp tube handy an easy way to fault find is to swap 1 tube out at a time until the amp starts working.

Check page 51 and 52. They have a pretty detailed description of how to diagnose preamp tube issues;

http://www.mesaboogie.com/manuals/MkV_101005.pdf

Do you get the feeling you're repeating yourself here? :lol:

My preamp tubes started going after 10 months. Boogie loves those tubes though. :roll: