03-23-2016, 08:04 PM
Your welcome!
So the next step is to take some pic's of the coil while in the chassis to show the original wiring. Unsolder the connections and remove the coil. Near the bottom of the coil you'll see a small winding (about 20 turns or so). If you look closely you may see some green spots on that winding. That's where the copper wire has rotted. Count turns and rewind that part of the coil. It's rare for the other sections to be open. To rewind there is a couple of pointers. Direction is important! If you reverse the direction it will be out of phase with the other winding and will not oscillate. Use copper magnet wire, gauge isn't real critical. Original was 38g. You can use any thing from 32-38ga and it will work fine. Under that winding there is a strip of plastic, remove and disguard. I've used a strip of masking tape to replace it. Wind your winding over the tape. To get RR stamp of good house keeping bake the coil at low temp (150-175 deg) for 20min. You don't want roast it. The thought is that the Bakelite coil form holds moisture and that will lessen the Q (or efficiency) of the coil. I put a little candle wax over the new winding.
Put it back in the set and your good to go!! Easy!!
Check your PM box if you have questions.
GL
Terry
So the next step is to take some pic's of the coil while in the chassis to show the original wiring. Unsolder the connections and remove the coil. Near the bottom of the coil you'll see a small winding (about 20 turns or so). If you look closely you may see some green spots on that winding. That's where the copper wire has rotted. Count turns and rewind that part of the coil. It's rare for the other sections to be open. To rewind there is a couple of pointers. Direction is important! If you reverse the direction it will be out of phase with the other winding and will not oscillate. Use copper magnet wire, gauge isn't real critical. Original was 38g. You can use any thing from 32-38ga and it will work fine. Under that winding there is a strip of plastic, remove and disguard. I've used a strip of masking tape to replace it. Wind your winding over the tape. To get RR stamp of good house keeping bake the coil at low temp (150-175 deg) for 20min. You don't want roast it. The thought is that the Bakelite coil form holds moisture and that will lessen the Q (or efficiency) of the coil. I put a little candle wax over the new winding.
Put it back in the set and your good to go!! Easy!!
Check your PM box if you have questions.
GL
Terry
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