10-28-2013, 03:28 PM
Sounds like the local oscillator of the 6A7 converter tube is not working. Might be an open oscillator coil.
You can place a transistor radio close to the chassis and listen 465 KHz above the dialed freq. You should hear a carrier as you tune the model 60 tuning dial slightly.
Do you have a signal generator which can give you a signal at the IF freq to see if the IF stage is working? If you can inject a IF signal into the 6A7 grid cap you sould be able to hear it loudly in the speaker if the IF is working.
You can also check all the coil windings for continuity.
You can place a transistor radio close to the chassis and listen 465 KHz above the dialed freq. You should hear a carrier as you tune the model 60 tuning dial slightly.
Do you have a signal generator which can give you a signal at the IF freq to see if the IF stage is working? If you can inject a IF signal into the 6A7 grid cap you sould be able to hear it loudly in the speaker if the IF is working.
You can also check all the coil windings for continuity.
