11-07-2012, 12:50 PM
http://www.nostalgiaair.org/PagesByModel...013789.pdf
When I disassembled this model 57 my 8ufd filter cap was connected to pin 4 of the 80 rectifier. Not the 4ufd. If the notes are correct the 8ufd terminal on the dual cap can is red and the 4ufd is green. Little hard to mix up.
My 4ufd was connected to a terminal strip where it met #11 (25K), #21 (1Meg) and some other components on the B+ line.
So obviously I'm a bit confused. I have another 57 coming over this morning that I can compare to but in the meantime, is there a mistake on the schematic or is the 4ufd handling the B+ line? And are the 4ufd & 8ufd + ends common to each other? Looks like they are through the speaker field.
Johnny
When I disassembled this model 57 my 8ufd filter cap was connected to pin 4 of the 80 rectifier. Not the 4ufd. If the notes are correct the 8ufd terminal on the dual cap can is red and the 4ufd is green. Little hard to mix up.
My 4ufd was connected to a terminal strip where it met #11 (25K), #21 (1Meg) and some other components on the B+ line.
So obviously I'm a bit confused. I have another 57 coming over this morning that I can compare to but in the meantime, is there a mistake on the schematic or is the 4ufd handling the B+ line? And are the 4ufd & 8ufd + ends common to each other? Looks like they are through the speaker field.
Johnny
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