Go to front of TV remove panel behind it there is a small black box it is your screen and focus Block R/G/B adjust screen drives and focus their will be 3 on top and 3 on bottom ones ontop control focus for each tube and on bottom control screen drive to each tube , Turn color off ajust all 3 tubes untill you have a black and white picture ,then after you have done this go back turn color on you should now have a Nice LOOKing Picture.
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