Is it common for LED TVs to have uneven brightness/dark splotches like this? : r/techsupport
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How long should a TV last? - Reviewed
How To Fix A TV Screen That's Too Dark On Full Brightness - Sorta Techy
How to calibrate your TV for movies, sports, and games - CNET
Why My TV screen brightness always changing automatically. | Samsung Support Malaysia
Phidgets Projects: Dynamic Backlight with Phidgets