05-15-2011, 11:06 AM
trying to troubleshoot an 8 tube knight console, tag inside says model 21-c but I cannot find any model close to it. it is 3 band short, med., brdcst 4 knob with 6 pushbuttons, on off-tone, band-pushbutton, volume, tune. tube line up is 5y3, 6sj7, 6sa7, 6sk7, 6sq7, 6sf5, and 2-6k6. It has been recapped before but has apparently not worked since that repair, trans, rect. voltages correct but to hot on grids of both output tubes with no sound. without schematic Im not sure if replaced caps were connected in proper spot. I am a learning amature and can only restore step by step through the schematic. any info will be appriciated.
