06-19-2007, 12:34 PM
Hi John,
Some transformers can get pretty warm. The line voltage is higher today than 65 years ago. I have a few that I can only keep my hands on for a count of 5. I see you replaced the electrolytic caps but have you recapped the whole radio? Positive voltage on any of the control grids of the tube will make the radio draw too much current. Usually they are a couple of volts negative. Check your 41output tubes for negative voltage. Pin 4(control grid) with respect to pin 5 (cathode) which in your radio is grounded. You should have around -15 volts or so. The wax probably was from the transformer getting hot. Check your windings for resistance and voltage also. The high voltage windings from center tap should be within 5 to 20 ohms each other.
Hope this helps
Terry
Some transformers can get pretty warm. The line voltage is higher today than 65 years ago. I have a few that I can only keep my hands on for a count of 5. I see you replaced the electrolytic caps but have you recapped the whole radio? Positive voltage on any of the control grids of the tube will make the radio draw too much current. Usually they are a couple of volts negative. Check your 41output tubes for negative voltage. Pin 4(control grid) with respect to pin 5 (cathode) which in your radio is grounded. You should have around -15 volts or so. The wax probably was from the transformer getting hot. Check your windings for resistance and voltage also. The high voltage windings from center tap should be within 5 to 20 ohms each other.
Hope this helps
Terry
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