12-27-2010, 09:18 PM
Jerry,
When you touch the center terminal of the volume control, you should get a fairly loud hum. Be sure the volume control is turned up or else the center terminal will be nearly shorted to ground. If you get a loud hum the audio section of the radio is working. The next quick test is to check the local oscillator. To do this, tune the radio to the high end of the broadcast band, say about 1300 kc. Now place another radio near the dead radio and tune it 455 kc below the dead radio. Now rock the tuning back and forth. You should hear a squeal come and go. If so, the local oscillator is working. By doing these two quick test, you have eliminated about one half of the circuitry of the radio. Let us know.
Steve
When you touch the center terminal of the volume control, you should get a fairly loud hum. Be sure the volume control is turned up or else the center terminal will be nearly shorted to ground. If you get a loud hum the audio section of the radio is working. The next quick test is to check the local oscillator. To do this, tune the radio to the high end of the broadcast band, say about 1300 kc. Now place another radio near the dead radio and tune it 455 kc below the dead radio. Now rock the tuning back and forth. You should hear a squeal come and go. If so, the local oscillator is working. By doing these two quick test, you have eliminated about one half of the circuitry of the radio. Let us know.
Steve
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