Missing LCD backlight in HP computer.

[user0801]

Hi. I have a HP Pavilion x360, which model is HP x360 - 11-ab015nl. Laptop have broken LCD backlight. Could you help me to solve problem?

 

[admin]

Part number of your Mainboard .

 

[user0801]

448.05u04.0011

 

[admin]

448.05u04.0011

Try to check lvds nap on which you should found 3.3V and 19V .

 

[user0801]

where can i find it?

 

[admin]

where can i find it?

Put a clear picture for the both sides of your Mainboard.

 

[user0801]

okay

 

[user0801]

Pins 1-4: 19.6v
Pin 11(?): 3.3v

 

[user0801]

its 10th pin, not 11.

 

[admin]

How much you get on this fuse F5201
Same thing for ic u5202

 

[user0801]

F 5201 - 19.6V on both side
U 5202 - 0V on all legs

 

[admin]

Just to be sure need to know which pin of the ic u5202 is been linked directly to the lvds nap.

 

[user0801]

I'm sure sir, on u5202 is no voltage on all of 5 pins

 

[user0801]

My bad, power button not working good.
U5202:
1-0.13V
2-0v
3-0v
4-3.3v
5-3.3v

 

[admin]

My bad, power button not working good.
U5202:
1-0.13V
2-0v
3-0v
4-3.3v
5-3.3v

Good and now I need you to check which pin is been linked to the lvds nap directly of those 5 pin .

 

[user0801]

Its 10th pin

 

[admin]

I told you which pin of the ic u5202 is been linked to the 10th pin .

 

[user0801]

Sorry, but i dont understand what i should do now. I checket, that 4 and 5 pin from u5202 is directly connected with 10th pin from LCD1 slot

 

[admin]

No you have to check your lvds cable if the 3.3v and 19v is on LCD screen .
If you can ,put a clean picture of the screen LCD board .

 

[user0801]

Okay, thanks for your help, problem is solved. I dont check LCD, it is broken.