Mitsubishi WS-55411 55 in. Rear Projection Television

2 possibilities. Either your convergence IC's are going bad, or you need to remove the front panel of TV where the speaker grill is and you will find a small box with 6 control knobs on it. Mark each knob so you can set it back to its original position if you forget, the set might turn off if you adjust too high on either color, if so, set knob back in original position and turn tv back on and try again.The if it works reallign your convergence and that should do it.