u2000 post cap kit still having problems

Deadpool66

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So I got my u2000 capped but Im still having brightness issues. The contrast control has to be turned all the way up on the remote board or there is no picture. I can adjust the brightness on the flyback and get a ptretty good picture but Im getting absolutley no contrast control. I can turn it all the way down and the picutres comes back black and white. I then tried to adjust it slowly and about halfway you can see the color coming back then it goes black until its tunred all the way up. What the next area to check guys?
 
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Check resistor R811 (100k) to see if it has gone open or sharply increased in value.

Otherwise you may need to put the tube on a rejuvenator.
 
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