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Messages - Chrsm

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Randall Tube Amplifiers / RM80 - cut off
« on: October 20, 2016, 04:58:56 PM »
I have a RM80
After I have connected a ground loop hum eliminator, my amp cut of the sound after about 15 sec. of playing. Then there is about 10 sec. of silence, and then it can play for about 15sec. again.
I am educated electronic mechanic, but it is 20 years since I made my last tube repair. Where to start? Do someone have a schematic for RM50?

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