01-12-2015, 10:26 AM
(01-12-2015, 06:43 AM)rciancia Wrote: As suggested, I measured resistance in the following places and here are results.
Filament of 80 (6&7)--->CenterTap of 9&10 = 0
Center Tap of 9&10 (----> Chassis = 307k
Plate of 80 9&10 --->Chassis = 521 and 506k
Center Tap of (3&4) (5) --->Chassis = 0
Filament of 80 (6&7)----Chassis = 0 ( 10uf EL cap attaches here)
Filament (3 & 4) ---Chassis = 3 & 6k
Center tap 8 should read ~ 325 ohms to gnd (through resistor 30). But the bigger issue is 0 ohms from the filament taps (6&7) to #8. Unless I'm overlooking something you need to figure out what is shorted here. I'd start by taking good notes/pictures and then disconnecting things to see what is shorted or mis-wired.
Do this with the 80 removed and I would probable disconnect the power transformer also so I could check for shorts. I suspect something has been mis-wired, but you'll have to double check all wiring against the schematic to verify.
John KK4ZLF
Lexington, KY
"illegitimis non carborundum"
