[AMRadio] DRIVER XFMR UPDATE

[W7QHO at aol.com]

In a message dated 2/20/03 3:43:09 PM, mwells at gcea.coop writes:


> After replacing the 5V4 and
> testing the circuit I saw the 12BY7 was shorted and looked more like a 
> light
> bulb than a tube. I went looking and found the 680 ohm cathod resistor was
> burned open.
> 
Mike,

Cathode resistor burned out and the 12BY7 lit up "like a light bulb?"   Odd 
failure mode....   I would say, lucky you're not looking for another driver 
transformer at this point.

Dennis D.   W7QHO
Glendale, CA



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