barry@hprmokg.HP.COM (Barry Fowler) (11/01/89)
I'm looking for a voltage dependant resistor (VDR) for a Zenith 19DC22 Chassis. The part is about the diameter of a nickel, about 3/16 inch thick and looks much like a thermistor would. It's coated with red epoxy. I do not have the Zenith part number. The part failed by arcing across the body and blew out the tripler with it. The component connects in series with a focus voltage tap coming from the high voltage tripler. It is mounted on a terminal strip behind the flyback transformer. It apparantely is used to automatically adjust brightness of the raster with high voltage fluctuations. The low voltage side of the component connects to the brightness limiter potentiometer, with another series resistor and zener diode connecting to ground for the voltage ref. of the control. I have tried talking to two Zenith dealers in the area and they are no help (the set is about 15 to 20 years old). Any help on the net I can obtain in either getting the part, finding a source for the part, or its part number would be greatly appreciated. Please e-mail your response. Thanks, Barry ---------------------------------------------------------------------- Barry M. Fowler Hewlett Packard Company Networked Computer Manufacturing Operation - Roseville, California e-mail: barry@hprmokg.rose.hp.com Verbal: Hey Barry! R.F. : WB6JZL