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This TV turned on but the backlights flickered and didn’t stay on and there was no video. I found out afterwards from the owner that the panel had been hit. Usually cracked screens still display video.

Unplugging the main cable from the power supply to force the backlights on showed a 2 inch crack on the edge of the screen. This model does not have a tcon board and the function are integrated into the panel which may have caused the no video situation. With nothing to lose, I ripped off the tab bond at the location of the crack and was able to get the TV to turn on and display video. The L shaped crack had also caused horizontal lines to emanate from that point.