Hi Dhikn,

Yesterday I've managed to repair my board.
In addition to other faulty elements, one Zener diode was also faulty, but it measured ok with a diode checker, so it went unnoticed.
On my board CM804 is a ceramic capacitor 220pF, 1kV (marking is 221K) - it failed on my board for LED power also.
When replacing, put a 2 or 3 kV capacitor - it failed because of low voltage rating.
If it has failed then some other components are dead also - resistor 0.24 ohm RM812 (on my board), MOSFET, etc...
The schematic is pretty straightforward, and the PWM controller...

Hello,

I had few blown components on the LED power supply on BN44-00517C board, including 1kv capacitor, MOSFET, power resistor, and some SMD resistors for which I cannot find values, so maybe someone can help me.

I've tried to recreate resistor combination using a datasheet for the SSC2S110 pwm controller, but the LED backlight still won't turn on.
I can confirm that the LED backlight is working, pwm controller is working because I've soldered it instead of the same controller for logic power supply and that is working fine.
I've even changed the optocoupler....

Re: needed ASUS ROG STRIX GL753VD scheamtic and boardview please



Thank you!!!...

Re: New Members - please post your introductions here

Hello all,

Dinko here from Croatia.
Electronics engineer, tinkering around with all kinds of electronics.
Often in a need of expert support, so here I am.
Hoping to be of any help to other.

Cheers!