Colors flicker when the tv is on for a while. The backlight seems fine, the colors flicker around between different wrong colors. I took off the back of the tv and can't see any blown capacitors.

I made a youtube video showing the tv glitching, and another of it working correctly as a reference. youtu.be/wRrutwV_f8U youtu.be/9q2sSJss5TI update: this web page electronicshelponline dot blogspot dot com/2013/06/how-to-diagnose-failed-tcon-board-how.html says "It is virtually impossible for the video process circuit to cause a problem on a specific area of the screen. Failures on this board usually appear as distortions, color level shifts, video level shifts or noise that involves the entire picture." which describes the problem pretty accurately, so the part is ordered. will update later to tell if it fixed it.