First of all the amp dies while he gigs with the band on stage, lost of volume.
Second the power transformer was replaced based on the B+ werent correct well that what the amp he went to get it fixed told him, not really enough info. Plus everytime you switch it on the SLO BLOw fused always went.
So what could be causing it to happen? What should look out for? I would like to help him out.
Could it be the transformer dropping it voltage? Or the power tubes, l still havent see the amp but he has called me on the matter as the amp techs here cant seem to find out whats wrong.