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Old 12-10-2019, 08:15 PM
old_coot88 old_coot88 is offline
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Join Date: Sep 2009
Posts: 2,644
On the color issue, what voltage do you have on pins 3 and 10 of the 8BU11 (plates of burst amp and sub-carrier amp)? Should be around 200V on both.

What's the voltage on pin 9 (screen grid)? Should be around 120V.

On the vert issue, since replacing C2 didn't fix it, check the plate load resistor of the vert.oscillator. It is a high failure component in all makes/models of tube TVs due to being hammered by high level spike. And by golly Sams shows this set using a thermistor as plate load resistor. Check this. It's designated R64 (R54?). Print is blurry. It goes to the plate (pin 11) of the 11FY7. What's the voltage on pin 11? Blurry print looks like it says 290V (this voltage will vary with the height control setting, since the control is in series with the thermistor).

Last edited by old_coot88; 12-11-2019 at 09:42 AM.
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