05-21-2026, 11:44 PM
Hi Joe,
+1 on Morzh's statement. Try the following.
Radio unplugged, Bat / AC switch in AC. Power switch on. There should be continuity between one prong of the power cord and the anode of the rectifier. There should be continuity between the other prong of the power cord and the common negative of C101 A, B and C.
Next, plug the radio in. There should be 120V across C101A. Ther should be 65 V across C101B. There should be 7.5V between Pin 7 of the 3V4 Audio Output Tube and P1n 1 of the 1R5. If the voltage is high, then one or more tube filaments are open, the string may be interrupted by miswiring, etc. It is important to note that a tube may have opened due to hi voltage from the power supply.
+1 on Morzh's statement. Try the following.
Radio unplugged, Bat / AC switch in AC. Power switch on. There should be continuity between one prong of the power cord and the anode of the rectifier. There should be continuity between the other prong of the power cord and the common negative of C101 A, B and C.
Next, plug the radio in. There should be 120V across C101A. Ther should be 65 V across C101B. There should be 7.5V between Pin 7 of the 3V4 Audio Output Tube and P1n 1 of the 1R5. If the voltage is high, then one or more tube filaments are open, the string may be interrupted by miswiring, etc. It is important to note that a tube may have opened due to hi voltage from the power supply.
"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis
Best Regards,
MrFixr55
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