11-05-2017, 08:53 PM
[attachment=14686][attachment=14686][attachment=14687][attachment=14686]My current project is a Philco 37-62 which I acquired to hopefully repair. Before recapping, I tried to turn it on using a voltage limiter with a 60 watt bulb and got nothing. I then attempted to test continuity in the transformer. The primary winding was good. Next I attempted to check the plate and filament connections on the Rectifier Tube. Here is where I could use your advise!
Schematics show a 5Y4-G. The Tube is actually a 5Y4-GT
The resin base is broken (see pix)
If I follow the key on the base ( if the Tube is in correctly, as the resin keyway has dislodged) I get continuity on 7 and 8 which should be the filaments, but as you can see from the pictures, there are no solder joints on 8.
I also get continuity readings on 3 and 5 (according to the Tube data on the 5Y4GT) but it is from the solder joints behind the pins and there is no pin on 5. (Which would be #4 if you follow and number each pin slot on the resin base, but the data for Tube 5Y4GT seems to call pin 4, pin 5.)
Do you know what direction I should take from here?
I am new at this and have a multimeter to test with.
If these questions are elementary I apologize, but with your help, maybe I can get this radio back to life.
Thanks!
[attachment=14686]
Schematics show a 5Y4-G. The Tube is actually a 5Y4-GT
The resin base is broken (see pix)
If I follow the key on the base ( if the Tube is in correctly, as the resin keyway has dislodged) I get continuity on 7 and 8 which should be the filaments, but as you can see from the pictures, there are no solder joints on 8.
I also get continuity readings on 3 and 5 (according to the Tube data on the 5Y4GT) but it is from the solder joints behind the pins and there is no pin on 5. (Which would be #4 if you follow and number each pin slot on the resin base, but the data for Tube 5Y4GT seems to call pin 4, pin 5.)
Do you know what direction I should take from here?
I am new at this and have a multimeter to test with.
If these questions are elementary I apologize, but with your help, maybe I can get this radio back to life.
Thanks!
[attachment=14686]
