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battery pack for Philco 39-85 121
#4

Tank, I certainly agree with the above comments on replacing caps and checking resistors. However I am concerned about your comment of your A pack of batteries giving 3V. Being twice as high as it should be, those tubes would not last long. You really need to check how those batteries are wired together. They don't "glow" much, in fact hard to see them glow without turning out the lights. If you saw them glowing, probably running too high on the filament voltage. Check the A pack and then check the tube filaments by removing one at a time and using an ohm meter check each for very low resistance. Let us hope, you have not taken out all of the filaments in the tubes. Must get that voltage down to about 1.5V. Report back on your findings and good luck on your first radio. Always memorable and will lead to working on even more.

Jerry

A friend in need is a pest!  Bill Slee ca 1970.


Messages In This Thread
battery pack for Philco 39-85 121 - by Tank - 07-27-2012, 04:34 PM
RE: battery pack for Philco 39-85 121 - by jerryhawthorne - 07-28-2012, 05:49 PM
RE: battery pack for Philco 39-85 121 - by Tank - 08-01-2012, 03:47 PM
RE: battery pack for Philco 39-85 121 - by Tank - 08-02-2012, 12:15 AM



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