Posts: 1,703
Threads: 55
Joined: Sep 2005
City: Evanston, IL
If you disconnected the Shadow Meter, you need to sub in a 1.5K, 1watt resistor in place of the coil, otherwise the front end tubes, RF Amp and DET-OSC, get no B+.
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Recent Posts
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An attempt to remove the Field Coil from a G speaker
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Mike;
I've only run into a speaker with an open filed coil twice, and they were on newer speakers from the 1940s. One ...Arran — 12:48 AM |
An attempt to remove the Field Coil from a G speaker
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Arran
Yes, this is my plan for now and what do I got to lose, this is not even the speaker from this radio, but one o...morzh — 10:44 PM |
An attempt to remove the Field Coil from a G speaker
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Mike;
I would unwrap the field coil, and see if maybe there a break near one of the ends, like where the coil wire att...Arran — 10:23 PM |
An attempt to remove the Field Coil from a G speaker
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...and this is what I did. I fed a little LT into the screwholes with a small brush, and a little on the rim next to the...morzh — 09:52 PM |
Philco 40-120C Restoration
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I combined the two 40-120C threads together as we like to keep the discussion of the same radio together. It helps with...klondike98 — 09:36 PM |
Philco 40-120C Weak, Distorted Ouput
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Just checked were I buy tubes price is four dollars. So living in Florid we have a local source for tubes. David David — 09:14 PM |
Philco 40-120C Weak, Distorted Ouput
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The higher voltage may be due to higher mains voltage. My mains run 120-125AC when the set was new mains would be 110-11...David — 09:09 PM |
Philco 40-120C Weak, Distorted Ouput
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Thank you for your reply. I pulled a speaker from a Philco 41-221 and received the same result. I used a signal tracer t...bluecap — 08:45 PM |
Philco 40-120C Weak, Distorted Ouput
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Have you tried a different speaker?
How did you trace the distortion?
How do you know it is weak? What is the reference?...morzh — 08:33 PM |
Philco 46-480 Electronic Restoration
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Amen to that! Every time I think I’ve captured them all, I realize that there’s another error. My goal is to finish with...jrblasde — 07:00 PM |
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