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Restored Philco 46-420 code 121 has slight low pitch hum.
#23

Interesting about the tracer; hopefully I will be able to afford one soon.

The speaker is an FC. I have a 10W 20 ohm resistor on hand. It is the only one I have in my resistor stash that is over 2W.

I could use it if you thought it would not damage anything else and I have 3 PM type speakers sitting around.

How would I go about wiring everything for the test?

Since I was talking about swapping in the exact same FC speaker assembly (speaker - field coil - transformer) that I had from an old hippo I was going to disconnect the 2 red, 1 orange, 1 blue and a green wire on the other side that goes to the tuner, would it be easier to do that first or try the PM test?


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RE: Restored Philco 46-420 code 121 has slight low pitch hum. - by terrylett - 03-19-2019, 04:32 PM



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