[Ron Ramirez]

It's repairable...sometimes. I've seen some that had such a bad (and deep) carbon track that I had to discard the unit and find another 37-650 chassis for its RF unit.

I was able to repair one by scraping the carbon out of the burnt track, then using clear epoxy (not J-B Weld, it is conductive) to reinforce the area where I had to scrape carbon out.

Anyway, it requires removal and disassembly of the RF unit.

Thanks a lot, David Grimes.