The PHILCO Phorum
I.F. Transformer Repair - Printable Version

+- The PHILCO Phorum (https://philcoradio.com/phorum)
+-- Forum: Philco Radio Discussions (https://philcoradio.com/phorum/forumdisplay.php?fid=5)
+--- Forum: Philco Electronic Restoration (https://philcoradio.com/phorum/forumdisplay.php?fid=8)
+--- Thread: I.F. Transformer Repair (/showthread.php?tid=1498)


I.F. Transformer Repair - mandh - 11-16-2008

One of the I.F. transformer in my 610 will not tune properly and after looking at it I suspect that the tunning cap mica insulators in that section of the transformer are disintergrating. What have you done to repair/replace the mica in the I.F. tunning cap? I guess I could always add a cap under the cahssis to tune that section of the I.F. transformer and remove the cap inside the I.F. can, but I would prefer to repair it if possible.

Re: I.F. Transformer Repair - Ron Ramirez - 11-16-2008

I've never attempted a repair of the mica insulation in a 1936 Philco IF transformer. I suppose it could be done, though.

On the very rare occasions that I have had a bad IF, I usually have a replacement from my parts stash kicking around here somewhere.

Re: I.F. Transformer Repair - mandh - 11-16-2008

Thanks Ron. Now my next question is where on the web to look for an I.F. transformer, since I would think they are rare items.

Re: I.F. Transformer Repair - BDM - 11-16-2008

mandh Wrote:Thanks Ron. Now my next question is where on the web to look for an I.F. transformer, since I would think they are rare items.

Your best bet is to find a parts chassis. 610s are fairly common

Re: I.F. Transformer Repair - exray - 11-17-2008

I've got some pieces of mica that I've salvaged from trimmers. About an inch square, you can trim to size. Wouldn't be a problem to drop one in the mail if you think it could help.
A piece of cellophane will work in a pinch too.
-Bill

Re: I.F. Transformer Repair - mandh - 11-17-2008

Thanks to all for your suggestions. Bill, your mention of the piece of mica you have reminded me that I have a bunch of transistor mounting kits that have mica washers in them. They have been sitting in the junk box for years, so I guess it's time to make use of one.