In Reply to: Fisher SA-16 With Burned Resistors posted by FlaCharlie on September 22, 2016 at 22:43:08:
Charlie
The 220 ohm resistors are put there to create an artificial center tap for the filament supply.They are also there to shunt leakage current from the primary that can cause hum from being imbalanced and creating a magnetic field.
This would not cause your tubes to lose vacuum.The amps were probably sitting in an area with extreme temperature change or some physical jarring caused these tubes to crack and lose vacuum.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
Edits: 09/23/16
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Follow Ups
- RE: Fisher SA-16 With Burned Resistors - Michael Samra 00:03:54 09/23/16 (5)
- RE: Fisher SA-16 With Burned Resistors - FlaCharlie 07:55:02 09/23/16 (1)
- RE: Fisher SA-16 With Burned Resistors - mcgjohn@yahoo.com 10:03:19 09/23/16 (0)
- RE: Fisher SA-16 With Burned Resistors - FenderLover 02:16:57 09/23/16 (2)
- RE: Fisher SA-16 With Burned Resistors - Michael Samra 14:39:56 09/23/16 (1)
- yup... - FenderLover 17:50:57 09/23/16 (0)