[R-390] R-390 Transformer
Steve Hobensack
stevehobensack at hotmail.com
Sat Oct 17 09:39:31 EDT 2015
I have repaired the r-390a transformer feed through ceramic tubes. It is a fairly easy repair. The voltage breakdown happens in the tar potting near the hi-tension ceramic tubes. To repair, de-solder the bottom plate. Instead of de-soldering, I tapped a hawks bill knife along the solder seam of the plate. Apply a heat gun and remove just a small amount of tar near the plate winding tubes. replace the tubes with plastic tubing and replace the potting. You can use bees wax instead of tar.
N8YE
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