04-28-2021, 12:08 PM
This is my first post and I hope I didn’t put it in the wrong area of the site. My background is woodworking not electronics as you will be able to tell from my questions. Hopefully I can get some needed assistance.
http://nucow.com/GE%20S-22-X%20ca%20sche...manual.htm
I am a rookie at restoring vintage radios and unfortunately not versed in reading schematics yet but I was given a GE S-22 that needs a lot of work.
I do have both the schematic and a wiring diagram and it may be heresy but I can follow the basics of the wiring diagram, not the schematic at this time. I am continually reading about schematics but it doesn’t come naturally to me.
I have rebuilt the capacitor block, replaced resistors but have come to a dead end with the two electrolytics C17 and C18. I have nothing but two holes where these two caps once were. They may have been Mershon caps and someone removed them. I don’t know. My problem is I don’t know how to install my new caps and get the polarity correct. There is a existing unconnected red wire from the 1st Det coil that I assume went to C17 as well as another unconnected red wire from the resister terminal board that I assume went to C18. I’m assuming the + connections for C17 and C18 are these two red wires.
When reading other posts about the GE S-22 and the RCA 7A, which is supposed to be the same, I saw that restorers would clean out the old electrolytic, put a new cap inside it and solder the negative to the top of cap. In another post, it was mentioned that one of the electrolytics on the RCA 7-A was isolated from the chassis. Unfortunately again I don’t know how to determine if that is the case with my GE S-22 and if so what to do to correct the issue.
I don’t have the option of putting new caps in since I have no cap there at all. Also on the diagram, C17 has a lug on the bottom that has a red wire leading to the reproducer unit terminal board that is gone as well.
I would appreciate any assistance whatsoever in helping me wire in the new electrolytic caps and hope you can be patient with me as far as my inability to read schematics.
Sent from my iPad
http://nucow.com/GE%20S-22-X%20ca%20sche...manual.htm
I am a rookie at restoring vintage radios and unfortunately not versed in reading schematics yet but I was given a GE S-22 that needs a lot of work.
I do have both the schematic and a wiring diagram and it may be heresy but I can follow the basics of the wiring diagram, not the schematic at this time. I am continually reading about schematics but it doesn’t come naturally to me.
I have rebuilt the capacitor block, replaced resistors but have come to a dead end with the two electrolytics C17 and C18. I have nothing but two holes where these two caps once were. They may have been Mershon caps and someone removed them. I don’t know. My problem is I don’t know how to install my new caps and get the polarity correct. There is a existing unconnected red wire from the 1st Det coil that I assume went to C17 as well as another unconnected red wire from the resister terminal board that I assume went to C18. I’m assuming the + connections for C17 and C18 are these two red wires.
When reading other posts about the GE S-22 and the RCA 7A, which is supposed to be the same, I saw that restorers would clean out the old electrolytic, put a new cap inside it and solder the negative to the top of cap. In another post, it was mentioned that one of the electrolytics on the RCA 7-A was isolated from the chassis. Unfortunately again I don’t know how to determine if that is the case with my GE S-22 and if so what to do to correct the issue.
I don’t have the option of putting new caps in since I have no cap there at all. Also on the diagram, C17 has a lug on the bottom that has a red wire leading to the reproducer unit terminal board that is gone as well.
I would appreciate any assistance whatsoever in helping me wire in the new electrolytic caps and hope you can be patient with me as far as my inability to read schematics.
Sent from my iPad
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