The useful life of the backlight of an LED TV can be extended for many years if we lower its working current from the factory, since it comes with a fairly high value.
The backlight LEDs are in series with a group of resistors that measure their current and set the supply voltage to 150 VDC with a few volts up or down to keep the current stable.
Here I show how by eliminating one of the resistors we can lower the current by 30%, which helps a lot to extend the useful life of the backlight LEDs.
11 сен 2024
