Quote:
Originally Posted by old_coot88
  If the can IS actually floating electrically, it needs to be fixed as the first (not last) order of business. But there's still the separate issue of zero plate and G2 voltage (on pins 5 and 6 of the 5AQ5), as discussed previously. This wouldn't be caused the floating can. |
1.) Yes, exactly, I do need to fix the floating negative on my replacement cap that I used to replace C3B that was in the can, and the floating negative lead would definitely cause my negative voltage readings in the audio circuitry.
2.) Yes I do still need to figure out the issue with the low voltage readings on pins 5 and 6 of the 6AQ5 tube socket and the none existing cathode voltage (which should be 17 volts but measures a measly 5 mV.)
3.) As for the floating ground issue, it is easy enough to do especially when you're trying to tie a new individual electrolytic cap negative lead onto a previously used chassis ground tie point that has tons of old solder already blobbed onto it.