MB 3RECTO on the bench

[rzenc]

Hi guys!

A friend of mine bought it used....

He complains about:

01- Switching noises when engaging thru different channels...LOUD POP thru speaker cab;
02- Loop FX seems to be crazy...alters from soft to stupid levels without any change..gremilins inside? ;
03a- He was playing a gig on Saturday nite and got a LOUD thumb from speakers...looked to amp and it was dead ;
03b- Mesa calls for 4AMP fuse, he finds out there was a 8AMP FUSE inside.... ;
03c- 1 out of 6 power tubes is shot - getter turned white - happens to be a center tab - aligment pin -  which is missing ;
03d- There are 3 Rectos (5U4G labelled MESA), one of them is also shot... suicide note: he never plays on hollow state rectos...

So he brought it to me...I did not have time yet to open it. I would like to ask you guys whether you have a schematic to share....
Many thanks in advance...
Best Regards

R.