Philco 38-10 help - Printable Version

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Philco 38-10 help - Guest - 08-08-2010

I just picked up a philco 38-10 my 2nd old radio and it ran all day at the berryville va hamfest , i layed it on it's side to transport to my home and took it out of the car pluged it in and smoke. the filter cap that bolts to the top chassis came loose and i have no idea to where it goes.the cap is still good and not shorted. bill in south n.j.

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Re: Philco 38-10 help - Ron Ramirez - 08-09-2010

Hello Bill, and welcome.

Sorry to have to say this, but...this is why an old radio should never, ever be plugged in and turned on before, at a very minimum, the electrolytic capacitors have been replaced.

http://www.philcoradio.com/tech/plugin.htm

http://www.antiqueradio.org/powerup.htm

How do you know the old electrolytic can is still good?

If it's 60-70 + years old, and you intend to play the radio...it needs to be replaced, along with all of the paper and electrolytic capacitors, if you want your radio to be reliable and safe.

Believe me, I am not trying to be mean; only helpful. I hope you will accept this in the spirit of helpfulness in which it is intended.

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- Radioroslyn - 08-18-2010

Hi Bill and Welcome!
Here is the diagram for your set: http://www.nostalgiaair.org/PagesByModel/233/M0013233.pdf
You will note two filters. One (#45) goes from the 5Y4 filament to the high voltage center tap. The other (12a) goes from the filter choke to chaiss ground. 20MFD@ 450v will work FB for both. As Ron recommended replace all of the caps electrolytic and paper. If not you will be wasting a lot of time troubleshooting to find that the unreplaced caps are the problem. DON"T CLEAN the DIAL the print will come off. Don't ask how I know.
Terry

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