Posts: 14
Threads: 7
Joined: Mar 2010
The 41-90 i got for free has numerous problems but i am confident to get threw this and still have most
of my hair.The second if transformer has a open coil part number 32-3199 any ideas on how to fix this?
or what do i replace it with.
Posts: 18
Threads: 1
Joined: Feb 2010
I was able to repair an open IF in a compact stereo by removing the case and re-soldering the coil leads at the terminal lugs. One had broken away. If you're lucky it might be that simple.
-David
Posts: 14
Threads: 7
Joined: Mar 2010
I have actually thought about that but i haven't got that far. I am hoping that is all it is,it would be nice there is alot more wrong with it than i thought, for a 4 tube radio. This is my first resteration.
Posts: 7,248
Threads: 266
Joined: Dec 2009
City: Roslyn Pa
I'd give the transformer a good looking over. Check it for the green winding disease. If it's got it you will need the replace it. Depending on the mounting I like Ktran transformers. Probably it will be smaller than the oem job. Diagram sez IF fq is 456 KC. A 455KC can will work fine.
de N3GTE
Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
Posts: 893
Threads: 9
Joined: Mar 2008
City: Vieques, PR USA
State, Province, Country: PR
7estatdef Wrote:Probably it will be smaller than the oem job.
No "probably" about it, har-har. OP is talking about a 1941 model.
Never seen 'green winding disease' on a 40s Philco IF either. I lead a sheltered life.
I'm with David Berman. The the most common cause of an open 40s IF xfmr is at the lugs.
Posts: 7,248
Threads: 266
Joined: Dec 2009
City: Roslyn Pa
Hope both of yous guy are right. I've got model 600 with an intermittent problem of the IF going in and out in oscillation (regeneration). Granted it's a bit older (1936) but I think the feedback winding is causing the problem. Did get it apart kind of as the rivets at the bottom of the can won't let the ceramic trimmer pass by. It doesn't have lugs just wires extending out of the top and bottom. Everything looks good inside so I was thinking about use a heat gun and an ohm meter to see if I can get it to act up. I will be sure to resolder the internal connections and hope for the best. When it's working it surprisingly well for a simple set.
Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry