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Philco 37-640 first IF trnsfr help
#1

Good morning members, While I was repairing insulation on one of the two the black insulated thin wires that go into the bottom of the first IF can, I noticed that one of the tiny wires going to one of the terminals on the bottom of the IF can was broken. I retouched the two wire ends with my soldering iron with a bit of solder. My concern, is the IF transformer going to work or not. I see the 2 resistance reading listed in the schematic for part #33 which is the first IF. Can I check if its good by measuring the resistance? If so do I have to disconnect the IF can wire to make the readings. I certainly hope all is not lost. Thanks, John
#2

In the first place I would confirm the abscense of continuity before reconnecting. Just to exclude stupid things.
If this was a real open, then I don't think a short made of solder (I leave the reliability discussion) would change the parameters: as long as you do not see burnt copper and the continuity is somewhat similar to that shown (if it is shown), it should be ok.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#3

Thanks once again morzh for your expertise and help. I will do an ohm test and deterine where to check for continuity.  I will remove the IF can in the AM and get started.  If I find tests fail, I'll ask for your help again.   Regards, John




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