Same problem front lcd shuts down after 1 minute

1.Internal power supply- Replace all Electrolyte Capacitors.
2. If it is an LCD with florecent lamps - they might be worneout.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwi1mvbCzaODAxWGrYkEHcCtDv0QwqsBegQIDRAG&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DbunKOMKdwcw&usg=AOvVaw1RPdVvQShvGJFeUqr09XWQ&opi=89978449

Samsung HLN507W turns on for about one minute then shuts off, three blinking lights stay on in front. It is not the lamp, nor the blue lamp cover switch for sure. I unplug it and immediately turn it on. It always does the same thing: comes on for 1 minute, then powers down - there is no wait time in between unplugging and powering on. All fans seem to work and I cleaned the dust out of it. Help.

Were you able to figure out the problem or solution? i'm experiencing the same issue as of last night on the same exact refrigerator. Hope so!

pudiera ser que los ventiladores que tiene no esten trabajando por lo que calienta y se proteje debe serrevisado por un experto

Try connecting the TV directly to a different wall outlet and check. If the issue persists, try power resetting the TV. Turn Off the TV and remove the power plug from the wall outlet for 1 minute and reconnect it and check the operation. If the issue persists, then the TV may require service.

check your video card and update the driver or pe install your video card. add cooling system. another is the motherboard capacitors

Does the power light stay on? If so, you have an inverter problem. If the power light goes off, you have a power supply problem.

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Sounds like the monitor is overheating. The internal power supply maybe going bad. Ray