@bkeske -yes, I do have a pair of home made monoblock amplifiers if I decide I need music back quickly.
Actually, I have 250~300 more records in line for the 3 step cleaning process. I may just concentrate on whittling that down a bit while waiting for the capacitor.
@big_greg -I built both amplifiers. One from scratch, one from a kit. So when something goes POOF, it's out with the Fluke meter and Tek scope. Fortunately the POOFs have been quite rare.
@noromance -Yeah, it kind of puzzled me as well as why the Jupiter cap suddenly became a 0.04 ohm resistor. The amplifier has 4 stage coupling capacitors, all Jupiter foil and wax. I also used Jupiters in the scratch built (based around a RCA 811A triode) without any problem. I'm thinking there might have been a void or imperfection in the kraft paper layer which allowed a pin hole to form between the copper foil layers. There have been some strange clicks once in a while from the channel that finally died today. It may have been early signs of the capacitor failing. The capacitor that failed is rated at 400V in a circuit operating at 130V. I hardly think the AC component of the music would get anywhere near 400V. And even if it did, Jupiter tests each capacitor at 2x the marked operating voltage. I will send them the defective capacitor and see if they can figure out what happened.
@boxer12 -You're welcome Tim. Enjoy! If you're a fan of Swell Maps, definitely check out the new compilation of old and very rare tracks covering almost their entire lifespan in the double 12" "Mayday Signals" on the Easy Action label from the UK. The distributor I bought it from in England ran out already. They'll go quickly.