I finished up with the b+ power supply modification. I took my time and was careful. I powered it up slowly on the variac just in case, checking voltages along the way. It all looked good, so I installed the output tubes." Music" to my ears. which are not so good , so I can't say I detected any difference in sound quality. I have been reading about failing capacitors and how they will generate heat. I wanted to feel how cool my new top mounted caps were running. When I got to c56 ( newer schematic) I felt a tingle, a 199 volt tingle. The aluminum top to ground. Do I have a bad cap or , I have been doing some reading , I found this from the Nichcon site:
Aluminum electrolytic capacitors must be electrically isolated as follows: The aluminum case and the cathode foil are connected by the unstable resistance of a naturally formed oxide layer inside the aluminum case and the electrolyte.
The capacitor I use is a 680uf snap in cap. I made the assumption that because of the two terminals, the case was isolated. I guess I was wrong. The original 100uf Cap's case was the cathode and was isolated with the black cardboard and phenolic insulator.
Does anyone know of an easy way to get the black cardboard cover off the old capacitor. I think I need to reuse it.