Backlight IC for Samsung Galaxy A31

The Backlight IC in your Samsung regulates the power supply to the display backlight — controlling the brightness level and ensuring the backlight LEDs receive the correct voltage. When it fails, the screen appears completely dark even though the phone is working, extremely dim, or the backlight flickers. The phone itself continues to function — you may even hear calls or notifications — but the screen is not visible.

Shine a bright torch at an angle onto the Samsung 's screen in a dark room. If you can faintly see the display content such as icons or the home screen, the display itself is working but the backlight is off — pointing to the Backlight IC as the cause. If you see nothing at all, the display module or display IC may also be involved.

Yes, significantly. Backlight IC replacement is a board-level micro-component repair that costs a fraction of a full display replacement. However it requires board-level soldering skills. A professional technician should diagnose and confirm the fault before proceeding on your Samsung .

No. The Backlight IC is an SMD chip soldered directly onto the Samsung motherboard. It requires hot air rework equipment, precision flux, and professional board-level repair skills. Attempting this without proper tools will cause permanent motherboard damage.

Yes — a 7-day replacement warranty against manufacturing defects is provided. An unboxing video is mandatory for all warranty claims. Soldered ICs are considered used and cannot be returned. For more information, check out SAHII's Return Policy.