Backlight driver board single coil.
Led tv backlight driver board.
If your outage looks similar to mine taking up 1 4 of your screen try replacing your led driver board.
Look for a uniform outage not sporadic dimming or a single dim line suggesting led individual lights or entire led strip failure.
In this video how to solve led tv low backlight problem by adding extra backlight driver board please like comment share this video if any improvement should.
Backlight led driver and wled driver solutions from ti for backlighting extend battery power reduce board space and enhance lcd screen performance.