Facing TV Problems? Ask a TV Technician.
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Can you please tell me if there are ANY signs of life on the TV at all right now (power light lit or blinking, etc.)?
Please don't post duplicate questions, simply reply back on this page so we can continue.
I'm not sure why you're unable to reply. We often see these sets develop faults after a few years, and in most cases it requires replacement of a component (the Power Supply Board being the most common).
However it's worth it to try a hard reset, as sometimes the processor in the TV can simply have locked up.
The first thing you would try, is disconnect the set from power, then press and hold the power button on the TV itself (not the remote), for 10 seconds and release. Then plug the set back in, and also check that the power cord is connected tight at the TV as well. Press power once, and see if the set powers up normally. Try this procedure up to 2 times, and please let me know what happens.