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Broken Tone Control
#4

Well, whaddaya know! It seems I've been granted a reprieve by the Philco Gods!! I finally got everything off, including the offending tone control. That was......er, FUN! (ugly word) 11/32 nuts!
Anyway, I attempted to, and SUCCEEDED in, soldering the offending connection together with a little pad of solder to make contact, and IT WORKS!!!!
NOW, my only problem is to find out what value capacitors are supposed to be in part #30-4003. The Bintliff book just has an X for the values, so I guess I'll just wing it. I can extrapolate from the values of the known ones. It seems to have only two caps, oops, CONDENSERS!! in there.
Another thing I can't fathom is that all these dogbone resistors are IN TOLERANCE!! Fancy THAT after 75 years!
This old dahling is slowly coming together.
Hey, one of the filter cans reads something like .036 mfd. uh-huh! The other one reads okay. I'll play with it on my Sprague TO-6A just to do it, and to see if I can blow something up today! Icon_lol But it will be replaced by a smaller blue one from justradios.com. I'll go 2-10mfd@450V to keep her quiet.
That will leave a gaping hole in the chassis, but, with the trouble I had getting the tensioning hardware for the filters OFF, they won't go back ON!
As far as re-stuffing those bakelight tarboats, it is one MESSY job, but rewarding.

Steve McDonald


Messages In This Thread
Broken Tone Control - by tubenutt - 08-22-2009, 02:15 PM
Re: Broken Tone Control - by kruc - 08-22-2009, 03:47 PM
Re: Broken Tone Control - by tubenutt - 08-22-2009, 04:00 PM
Re: Broken Tone Control - by tubenutt - 08-22-2009, 06:25 PM



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