My Philco 40-180 quit

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My Philco 40-180 quit

Post by Wildcat445 on Mon Jul 18, 2016 9:51 pm

Bummer. My wife and I discovered a new AM radio station this morning. Actually, it is an OLD AM station with new power that allows us to hear it in downtown Fringeland. We can get the station on the car radio all the way to our garage. I wanted to see if I could get the station IN the garage, so I fired up my favorite radio, my old faithful Philco 40-180. I have been telling anyone who would listen for YEARS what a good, dependable radio this was. Until today. I turned it on and it does absolutely nothing as far as output goes. I get crackle in the speaker if I move the band switch, so the audio is somewhat working. It is dead on all bands. No static. I'm thinking the oscillator is not running. I had it running a few days ago, and it worked fine. I'm going to print out the diagram and see if I can track down the trouble.

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Re: My Philco 40-180 quit

Post by Bill Cahill on Mon Jul 18, 2016 10:10 pm

On many radios, and, TV's over the years people have thought mica caps would last forever. More are suddenly shorting out.
Another culprit is resistors. The biggest culprit with the philco locktal tube sets is rusty tube pins,and, poor quality tube sockets. RCA used wafer tube sockets on almost everything. They're going bad.

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Re: My Philco 40-180 quit

Post by 75X11 on Mon Jul 18, 2016 10:26 pm

All of them need attention sometimes. Hope it is something easy.
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Re: My Philco 40-180 quit

Post by Wildcat445 on Tue Jul 19, 2016 9:19 am

Although it has not been a particular problem for me, Philco is renowned for having coils suddenly open. I hope my record remains intact in that regard.

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Re: My Philco 40-180 quit

Post by Wildcat445 on Wed Jul 20, 2016 6:32 pm

It is fixed, but I don't know what I did to fix it. Shocked

I removed all the tubes. Three of them are Loktals. I sprayed the tube sockets lightly with WD-40 (yeah, I know, that stuff does not work!). I cleaned up the pushbutton switch for "tuner". I cleaned all the controls, paying attention especially to the band switch. I put the tubes back in and fired it up. It works as well as it ever did, if not slightly better. I can receive our "new" old AM station just fine. I can even receive an even more "fringe" station on 1030 AM. There had to be a bad connection somewhere.

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Re: My Philco 40-180 quit

Post by 75X11 on Wed Jul 20, 2016 6:53 pm

There are a lot of contacting surfaces in those old pushbutton units. You came across the right one/s.
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Re: My Philco 40-180 quit

Post by Wildcat445 on Wed Jul 20, 2016 7:11 pm

This old 40-180 is the one that was John Deere green when I got it. It has been in my refinishing pile since I got all the green paint off it several years ago. It had green paint on the chassis, with the tubes and IF transformers carefully painted yellow. I had to replace every tube in it, all seven. This is such a good radio that I really should treat it better and give it a much-deserved refinish.

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Re: My Philco 40-180 quit

Post by 75X11 on Wed Jul 20, 2016 7:28 pm

That and a set of red buttons for it. That ought to get WSM for you. They have a good program on Saturday nights. Radio Havana has a decent one as well on the SW band.
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Re: My Philco 40-180 quit

Post by Bill Cahill on Wed Jul 20, 2016 9:42 pm

The philco locktal tubes were a major problem. Tube pins would rust, the sockets were cheap wafers that often fell apart, and, were endless trouble.
I hate the resistors with very short leads under the tube sockets.

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Re: My Philco 40-180 quit

Post by Wildcat445 on Wed Jul 20, 2016 10:06 pm

Restoring a Philco radio is like restoring a '57 Chevy. Everything you could ever want is reproduced for them. A nice new set of pushbuttons would spruce it up.

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