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Philco 40-140 Field Coil Replacement
#25

Well, perhaps I spoke too soon. On the bench test today, the set is strong for the first fifteen minutes, and then the sound quality gets terrible. You can still hear it, but it sounds the same as those old A.M. transistor radios with a half dead battery. I had a similar thing happen some time ago where it was a gas leak from one of the tubes. Not here-I've changed all the tubes to no avail and checked them as well with a tube tester. I'm hoping the transformer isn't pooping out after fifteen minutes. I laid my volt meter across the large power cap when I turn the set on and I get 245 volts. Fifteen minutes later it's 235 volts. I don't know if that's enough to cause that, but it's all I knew how to do. What think ye gentlemen??


Messages In This Thread
Philco 40-140 Field Coil Replacement - by radiola - 09-04-2012, 11:21 PM
RE: Philco 40-140 Field Coil Replacement - by radiola - 10-05-2012, 11:39 PM



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