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In Reply to: RE: Did you want MY voltage measurements? posted by Lew on April 05, 2015 at 10:46:34
a circuit diagram is the most definitive source for that. I really do not have the time nor the energy to trace it through, If push comes to shove the solution is to take it to a reputable repair shop...like Bill Thalman, let him futz with it. if i had a circuit then i could figure it out :). Or just give up and take it to Bill. If Ralph was driving distance this would not be a dilemma.
dee
;-D
True terror is to wake up one morning and discover that your high school class is running the country.
quote by Kurt Vonnegut
Follow Ups:
You will find a schematic that is quite similar to your amp at the link below. The driver voltages will be nearly the same:
Cathodes of V1 about 0.3V
Plates of V2: about 175V
Cathodes of V4: about -65V
Plate of V4: about 275V
B+ and B- are about 300V
To get an idea of your power tubes take a look at this link
If your power tubes are good it may be that some of the resistors in the output section have failed. In your amp the larger resistors on the power tube sockets are 1 ohm 5 watts. Some earlier versions have 3 watt resistors.
You are great :)...
Thank you again.
dee
;-D
True terror is to wake up one morning and discover that your high school class is running the country.
quote by Kurt Vonnegut
Have you had time to evaluate the amplifier using the schematic? Have you identified the issue?
Thanks.
gardens took priority :(....Honeydo list expansion....
dee
;-D
True terror is to wake up one morning and discover that your high school class is running the country.
quote by Kurt Vonnegut
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