Picture flickering or dimming

Rule out picture settings (energy saving, ambient light sensor) and the source/cable first. Flicker on the TV's own menus points to backlight or power board.

Single source ~30 min moderateBrands: All

Before you start

Internal power/backlight work is for trained techs only.

Diagnostic steps

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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