Repair boards for the following Thomas Organ Vox models have been field tested and work properly:

These cover all models of the small combos like the Cambridge, and all models of the "Big Head" amps like the Buckingham, Guardsman, and Beatle before the advent of JFET inputs in the V11n3*6 series.

So these models of Vox amps can be completely refitted with new, known-good insides instead of wondering when they'll break next time! 

Bare PCBs were sent to field testers (and thank you all very much, testers!!) and they populated them using parts they bought from commercial sources, then put them into amplifiers. The amplifers were evaluated by the owners and in general were thought to sound like the amps did when they were new, but much less hissy and noisy.

I'm calling these two boards successes. Here's the "Big Head" board:

Compare that to the original:

This shows the point of all this work. Look at the wires. Which would you rather work on? All of the wires (and there are 70+ of them) in the new board go directly from the PCB to the control they connect to. The cross-laced bundle of wires is gone, and the new board uses stranded hookup wire that can bend without breaking.

And there's the "Suitcase Amp" board:

Compare that to the originals:

Notice that the "original" had to be stitched together from a couple of photos that don't really overlap right; that's what that "stitch line" is in the middle. But you can get the idea.

The Cambridge/Berkeley/Pacemaker/Pathfinder board offers cleaner wiring (although these amps are not the wiring disaster the Big Heads are!) and all new construction inside the same amp head.