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I have a BR 21 that i'm restoring for a buddy and the tubes are flat.. I cannot find any info on the brand used. Does anyone know what brand that the tubes were?
Oh and the issue with the filaments B+ voltage was weird. It was the fuse that was bad that caused that however it did not blow when the 120 was applied to it only when the HV was applied then it blew.. So the amp turned on and had 120 volts that lit the status light but no HV... That's when i...
I replaced them and the amp is working 100%! :-)
I had a Demco Demon 500 amp that had the very same issues with the diodes in the rectifier going bad and it blew fuses. I replaced them and it also worked 100%.
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