Mini Rectifier 25 Issue

[Im2Big4Life]

Hello Everyone,

This is my first post on this forum and bought my first Mesa Boogie! I've had it for around 1.5 months now and started experiencing the following issue:

As I am playing, the volume on either channel and 10/25watt, drops down to levels that cannot be heard. I then usually put it in standby wait 20-30 seconds and put it back on and it works.

My Rec was made Jan 14 as stamped between the tubes.

Is this a tube issue?

 

[jmontgomery]

My money's on a bad tube.

 

[2 Boogie]

I have a Mark V 25 that had a similar problem with, the volume dropped and came back after a while.
I started to shift around the preamp tubes and as I did that several other problem occured. So I changed all of the tubes to brand new ones, even the power tubes. After that the amp works good again, after that I also have more gain in the amp.

Dr B