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Philco 39-7 restore help
#15

Ok I need some expert help.  Chassis completely reassembled and when testing there were no broadcast stations heard.  Did some troubleshooting and I could not hear the Oscillator on a second receiver.  I checked continuity and found that point 3 of the oscillator transformer was not connected.  I got continuity between point 5 and 4 but nothing between 5 and 3 and 4 and 3.  I removed the Osc transformer from the chassis and examined it with a magnifier.  Inside I could see that the small transformer wire had broken away from the terminal connection inside.  I pulled it thru to the outside in the attached pictures so that I could test that it was only the connection point and not a open circuit within the winding.  I was able to confirm it was only the connection point.

That being the case I either need to replace this Osc transformer if that is possible or make a repair.  If making a repair what is the recommended process?

Soldering connections back to these terminal is somewhat problematic as the heating of the terminals transfers heat quickly to the transformer wire and that might  have been why I now have a open connection.

Any guidance, suggestions or help with a repair or replacement would be appreciated.

Regards, John


   

   


Messages In This Thread
Philco 39-7 restore help - by jkaterenchuk - 05-29-2020, 08:04 AM
RE: Philco 39-7 restore help - by morzh - 05-29-2020, 11:49 AM
RE: Philco 39-7 restore help - by jkaterenchuk - 05-29-2020, 12:31 PM
RE: Philco 39-7 restore help - by Radioroslyn - 05-29-2020, 12:40 PM
RE: Philco 39-7 restore help - by morzh - 05-29-2020, 01:51 PM
RE: Philco 39-7 restore help - by jkaterenchuk - 06-04-2020, 09:22 PM
RE: Philco 39-7 restore help - by morzh - 06-04-2020, 10:21 PM
RE: Philco 39-7 restore help - by Phlogiston - 06-04-2020, 11:26 PM
RE: Philco 39-7 restore help - by jkaterenchuk - 06-07-2020, 05:41 AM
RE: Philco 39-7 restore help - by jkaterenchuk - 06-18-2020, 07:26 AM
RE: Philco 39-7 restore help - by Radioroslyn - 06-18-2020, 11:58 AM
RE: Philco 39-7 restore help - by jkaterenchuk - 06-23-2020, 09:44 AM
RE: Philco 39-7 restore help - by Radioroslyn - 06-23-2020, 05:09 PM
RE: Philco 39-7 restore help - by rfeenstra - 06-23-2020, 10:20 PM
RE: Philco 39-7 restore help - by jkaterenchuk - 06-27-2020, 09:48 PM
RE: Philco 39-7 restore help - by rfeenstra - 06-27-2020, 10:12 PM
RE: Philco 39-7 restore help - by RodB - 06-27-2020, 10:20 PM
RE: Philco 39-7 restore help - by Radioroslyn - 06-27-2020, 10:24 PM
RE: Philco 39-7 restore help - by jkaterenchuk - 06-28-2020, 06:46 AM



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