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Old 01-26-2017, 10:14 PM
Crist Rigott Crist Rigott is offline
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Join Date: Oct 2015
Location: Waxahachie, TX
Posts: 1,519
When watching TV, I have to have the "Contrast" 99% all the way up. I'm considering adding or taking away some resistance in the contrast circuit. Here is the schematic and the contrast when watching TV the resistance is almost all the way down and the wiper is moved closer to the tube.

I'm thinking of reducing the R53A from 1K to something like 680 ohms. Would this put the contrast control more off all the way? If not, what could be done.

BTW, the schematic shows the pot value as 2K, but the kit came with a 5K pot.

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