fender bassbreaker 45 schematic

[g1]

I'm not clear on whether the Fet also ended up being bad or not and if it was replaced?

[ilyaa]

FET was still good! left it in there nice and cozy on a new heatsink bed

[lowell]

Would you please post screen voltage after repair woth power knob at 45W? Or do you remember? I have one in that has plates at 437v and screens at 304v at 45W. And it was brought in for flabby low end. I'm suspecting Vscreen should be a volt or 2 below plates at 45W per a typical design.

Without a schematic this is a tough one. Any thoughts on soldering the Gate to the Drain to eliminate the Output control?