About 15 years ago I made some electrostatic loudspeakers. They have survived quite well but recently one of them gave up the ghost and took out the right channel of the bass and treble amp (I have an active crossover in the system and a separate stereo amp for sub, bass and tweeter). The amps should be easy to fix as they are quads and the output transistors always go first. The speakers should be easy as I made them but I am struggling to find anything wrong

The speakers existed (as far as I was concerned) before the wife, I don't think she would let me make these now as they are 6' tall

Here is an old pic of the speakers in our old house

Here is the gubbins inside the speaker, essentially a hv power supply and two big old step up transformers.

Anyway better carry on measuring things to see if anything looks screwed up.....