RCA color issues

[incubustaproot]

before its said i have tried to search the forum for the specific issue and had no luck, feel free to direct me to the correct link if it exists please( and i am sorry if it does exist).
RCA sdtv
i came home and turned on the tv and could tell immediatly that something wasnt right. I turned my tv to CH 4 (just a default -no signal- blue screen) however instead of it being blue it was green down the center, about 75% of the screen and ok on the left and right side, blue. over the next few days the colors would change on the blue screen. it went to red down the center and green on the perimeter and so on and so forth. It has seemed to settle at blue (ok) down the center and red on the left and right. I have tired power cycling, hard resets and even moved a different tv face to face and turned that on trying to degauss it (my computer monitor too) it did t\he crazy light show for a second or 2 and went back to the way it was after the 2nd tv was backed away.
any suggestions would be appreciated.

[minnie]

Model # would help but if I believe correctly thermistor is metal which falls of off the leads. Replace thermistor.