Guys, one of my se84ufo2 amps started blowing fuses.  I pulled the rectifier and it arcs with no rectifier tube installed and blows the fuse.  I swapped all the tubes with left channel no help.

The rectifiers no matter which have almost no resistance when I put them in no matter which one.

Ideally I fix thus myself before the holiday.  Any ideas?

I can send it back to Steve later,