Wd60737
First make sure the filters and vents are clean and the filter cover(s) are properly installed.
Try once more (DO NOT RESET). As soon as the TV shuts down, press the ACTIVITY/ENTER button and the CH Down button on the TV (not the remote control) and hold them for 5 seconds. The Status LED will start blinking an error code. The "normal" code is 12, which would be one blink, pause, then two blinks and a pause. The code is repeated five times. Post your results in the comments; I can look up the code for you.
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