The screen / image is bowing up from the bottom and causing discoloration on the lower half of the screen
Those symptoms describe a convergence failure. Replaced both Stk392-120 convergence amps made by Sanyo and R3159 , R3160 (6.8 ohm 1w) resistors and check the remaining low ohm resistors for change in value.
This is probably one that you'll want to take to the shop unless you have some fairly good skills in electronic repair. Job will probably be about $350 - $425 if you take the unit in yourself and shop around for a reputable shop.
Bill
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bowing problem on top and bottom
i have discolartion in the lower of the screen can it be taking all apart and cleaned and put back together and what cleaner do i use
COLOR JAMS UP AT BOTTOM OF SCREEN, ALSO UN EVEN.
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