Custom Vibrolux schematic mystery

[David Aurora]

I've got a Custom Vibrolux Reverb on the bench that someone has absolutely butchered with poorly installed mods and I'm trying to revert it to factory spec for the owner who got stung buying a lemon. Should be the easiest thing ever... except that I cannot find a single accurate schematic for this model and apparently even Fender don't have a copy

It doesn't match any of the versions popping up on Google or sent to me by Fender. One of the obvious differences is spots for grid stopper resistors for the preamp tubes on the PCB designated as R66/67/68/69/70/71 (I found a schematic that shows 10k resistors in the same spots, but with different designations amongst other differences). So many components have been snipped and resoldered from the top that it's impossible to tell what exactly the original build was. There are plenty of ways I could wire things up that would work of course, but I'd like to put this guys amp back together as it was originally built (he said he bought it because he liked the sound of these, without realising the previous owner had absolutely stuffed it).

Failing a schematic, the mystery components aside from the ones above are R11/35/41/42/C20 so if anyone has the same model and can check values that'd be amazing. From memory all of those show up as omitted on one or more versions of the schematic, but again- none of those actually match this amp.

Thanks!

[maxkracht]

I haven't looked at what any of these components are on the schematic, but from a photo of one I worked on: r11,r35, r41, and c20 omitted r42 jumpered

I'm guessing the owner won't be too picky about the subtle differences between versions, no telling which one he liked anyway.

[David Aurora]

Thanks for that!

Absolutely wild that Fender apparently don't even know what they did on this one

But yeah, I guess ultimately it's just going to be educated guesses on how this one shipped originally