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According to Sams there should be solid continuity (zero ohms) from pin 3 of the flyback to the Height control. Since there's only 250V at the Ht control, find out where the open is. That .1 cap is not a problem if you already replaced it.
Also see if there's Boost at the screen controls. As jr_tech mentioned, if it's low it will knock the brightness down.
Last edited by old_coot88; 12-12-2019 at 11:03 PM.
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