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Put the screen controls back as close to there original position then unplug the set for 5 minutes. Those are sensitive adjustments for excessive beam current the set will shut down and the micro will latch up. Like I said, unplug then try again. You may have to do this a couple of times. The closest way to adjust them without a dvm is having the set in aux mode, turn r-g-b screen controls counter clockwise, look into the red crt and raise the red control until red is just visible then repeat for the other two. If your gray scale is off such as to much of any one color, turn that one down just a little. The last part I just stated is with a picture on the screen. Your picture should be black and white with no color added. (turn the color down via remote control)
Try resetting the TV by unplugging from wall outlet for 3 to5 minutes then plug back in. If no fixya take front grill off and panel and adjust the screen controls, turn color off adjust for Black & White Picture. Good Luck, big IRISH.
Sounds like a common voltage adjustment with samsung plasmas,I would call a service center these are things if you dont have experience you shouldnt attempt yourself
This problem is apparently occurs in 2 cases
1)Exposure of the screen to stron magnetic fields
This can be solved by degaussing(if this feature is there in your tv)Otherwise u can drop into a seervice center and it will be fixed in a jiffy.
2)Due to the presence of a dry solder(Loose contact) If you think you can try opening your tv and attempt to spot it.
Otherwise just drop into the nearest service center..U can locate by clicking on the link below
http://www.sony.net/SonyInfo/Support/
Sorry to say, it sounds like a bad picture tube, But could be also the capacitor that filters the screen voltage on the crt drivers. In all my years though, your complaint has been the picture tube. Good Luck.
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