Quote:
Originally Posted by Raddion
I just tested the heater circuit terminals 1 & 12, and the resistance was a firm 1.3 - 1.5 ohms. That is a good confirmation yes?  |
Yep. The fact that it lit up when powered on is an even better one, and proves that the tube is still under vacuum, which a simple resistance test will not. Plugging the set in straight away still wasn't the greatest thing to do, though.
Neither indication proves that the picture tube is good, as only putting an image on the screen will do that. But you are off to a great start.
Get yourself the Sams folder covering that set, and start compiling a list of capacitors for replacement. All the electrolytics and paper/film caps should be replaced right off the bat. Look around for any obviously burned or damaged resistors or other components at the same time. If you can get access to a tube tester, pull all the tubes and check them, replacing any that are obviously NG (open filaments or shorted). Any that show very low emission should be changed, as well.
Give everything a good cleaning and inspection while you are waiting for the new caps to arrive...
The unbooted HV connection is standard Philco practice. Nothing missing, it was likely never installed.
11-24-2012, 04:39 PM
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