Hi Gang, This Farnsworth GP-350 is an AC/Battery portable. No action, so I replaced
the selenium. No +- markings on it, but one post had a red mark. I presumed that+.
Replaced with diode, silver band to +. Still no action. Next in line was a 47 ohm
carbon resistor. Tested open. Installed a 220 ohm temp. replacement. Action!
Blatttt! Loud blatt. Volume control no effect. Can't call it hum. The old filter caps were
in place. I took them out of the circuit, and tacked in a 50 and 30 mfd. (Schematic different
but were same as my original values) Negative leads to original multi-cap case, and
positive as the original. (I should note; the original cap can is insulated from chassis.)
Wonder if I did something wrong? If I know I'm correct so far, I'll continue with recap,
and checking. Link to schematic to follow. http://www.nostalgiaair.org/resources/972/M0005972.htm
Thank You, terry h