I put heat-sinks on U14 and the regulator above it and the TV has been running fine all day. Always shut off after 14-30 minutes before. Heatsinks were just 1/2" x 1" metal strips with silicon thermal compound that I taped up to hold in place to temporarily test, as it is obviously a heat related problem.
If you try it and it works for you, post it here.
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Same Problem.
Unit works for 15 minutes when first turned on, but then will only stay on for 2-5 minutes thereafter. I too think it is overheating and have bought a replacement because it is so annoying...I may take off the back of the unit to see if the internal debris / dust balls are perhaps causing the issue, but I doubt it.
Tried replacing plug to power supply - No Luck (Light is still green on power supply (after it shut off by itself, so power to TV / Monitor is most likely not the issue, or my issue )
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