05-11-2012, 03:10 PM
Well, after rewinding the antenna and oscillator coils I brought it up slowly on the variac and got nothing but 60 cycle hum at 60 VAC in. Dummy me forgot to connect the negative of the filter cap to the center tap.
`Fixed that problem but now the radio is deadly silent. At 90 VAC in I would expect to hear some noise but all I get is a faint hum thru the speaker. B+ looks good at 240 volts at the 42 plate and 205 volts at the 1st detector plate. Checking the oscillator I get +18 volts at pin 4 of 1st detector to chassis and +29 volts to B-. I swear I rewound that coil correctly. Can rewinding it the wrong direction cause these kind of readings?
`Fixed that problem but now the radio is deadly silent. At 90 VAC in I would expect to hear some noise but all I get is a faint hum thru the speaker. B+ looks good at 240 volts at the 42 plate and 205 volts at the 1st detector plate. Checking the oscillator I get +18 volts at pin 4 of 1st detector to chassis and +29 volts to B-. I swear I rewound that coil correctly. Can rewinding it the wrong direction cause these kind of readings?
