Most likely the back light is defective, eventually you can replace the faulty LEDs by yourself. Or the back light controller on an electronics board is faulty.
That´s why the dots of some back light LEDs are visible in your case
Most likely the back light is defective, eventually you can replace the faulty LEDs by yourself. Or the back light controller on an electronics board is faulty.
That´s why the dots of some back light LEDs are visible in your case