Question about Magnavox 46mf401b/f7 46 Hdtv, Lcd 1080p Black

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Magnavox 46" LCD TV shuts itself off after a random amount of time.

I have a Magnavox model 46MF401B and it works perfectly except that it will suddenly shut itself off after a random amount of time. If I turn it back on, it's fine again for anywhere from 15 minutes to a couple of hours, then it will shut itself off again. I checked for bulging capacitors, but they all *look* fine. I own and know how to use a multimeter (Fluke 112), and I'm comfortable with a soldering iron. Is this a common problem? Thank you in advance for taking the time to help!

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Is there a person in your environs who is mischievous or prone to malfeasance? Someone may be using a TV-B-Gone on you. Check this out:
https://cornfieldelectronics.com/tvbgone/tvbg.home.php

Posted on Apr 14, 2014

Testimonial: "I wish it were that simple! But no, the problem is with the TV.... it just randomly shuts off. Looked over the PCB with a magnifying glass and can't see any cold solder joints or broken traces. Hate to have to trash it. Works great otherwise."

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