If a screen flickers or has dark patches, it’s a sign of a failing backlight system—a repair that is often more expensive than the TV's value. 3. The 6-Step In-Person Inspection
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These models often suffer from "clouding" or light bleed due to heat concentrated at the edges, which warps internal components over time. Early 4K Sets (Pre-2017): If a screen flickers or has dark patches,
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