10-01-2026, 09:14 PM
Hi,
There's a long list.
1. Check all transformers and coils for continuity. If any are open then the radio won't run. Be sure the speaker field coil is OK and it needs to be connected for B+ to get distributed.
2. Test for B+ voltages at the power supply and plate/screen grid circuits of each tube.
3. Check audio circuits by touching the cent3r terminal of the volume control with a screwdriver. If you don't hear a hum then there is probably a fault in the audio circuit. If you hear a hum then there is a problem with the rf circuit.
There's a long list.
1. Check all transformers and coils for continuity. If any are open then the radio won't run. Be sure the speaker field coil is OK and it needs to be connected for B+ to get distributed.
2. Test for B+ voltages at the power supply and plate/screen grid circuits of each tube.
3. Check audio circuits by touching the cent3r terminal of the volume control with a screwdriver. If you don't hear a hum then there is probably a fault in the audio circuit. If you hear a hum then there is a problem with the rf circuit.
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