| KBD leds are controlled by the same IC as keboard leds,I don't remeber it's name and number.
But it have two inputs and two oitputs. Inputs are enable lcd light and enable keyboard light.
It also have two inputs (LCD and KBD) current adjast. If one of these (current setting) resistor is damaged then you will recieve no light.
There are also protective resistors... They can also be faulty. |