07-23-2012, 10:45 AM
Thanks Gary, the window defroster grid ink is a great idea. I think I'll try that.
I did try dissolving pencil carbon in epoxy glue and although the carbon powder reads between 100 ohms and 1K, when dissolved in the glue it reads very high, >1M ohm. I guess there is not enough concentration of carbon to become conductive. The powder must have to be much finer grit.
I did remove the wiper part and bend it to get more contact pressure but no luck as the element is actually vaporized near the CCW connection and I noticed that the contact appeared partially melted. I think lightning may have struck this set at some time as the CCW terminal is connected directly to the antenna. I'd better check the antenna coil and capacitor as well.
Steve D
I did try dissolving pencil carbon in epoxy glue and although the carbon powder reads between 100 ohms and 1K, when dissolved in the glue it reads very high, >1M ohm. I guess there is not enough concentration of carbon to become conductive. The powder must have to be much finer grit.
I did remove the wiper part and bend it to get more contact pressure but no luck as the element is actually vaporized near the CCW connection and I noticed that the contact appeared partially melted. I think lightning may have struck this set at some time as the CCW terminal is connected directly to the antenna. I'd better check the antenna coil and capacitor as well.
Steve D
