Question Dell P76f No Display Light

[jhuenne]

Hi everyone can you help me fix my laptop no light on screen it has image on it. i can't find service manual on website this is my board id of my laptop RO 15/17 WHL 2G 18706-1 H3KD8 trace were its fuse or fix inverter lcd

 

[hang-the-9]

If you can see a faint image, then it's either the inverter or the backlight. From checking on the model it does not seem to have an inverter though, probably LED backlit.
This is the service manual link on Dell site https://www.dell.com/support/manual...c954a3-7759-4298-82b7-627093c8fcc3&lang=en-us
Including how to remove the display to swap it.

 

[jhuenne]

i tried that but its only how to dismantle a laptop hope if someone can share schematic or block diagram for servicing my laptop i really need to fix my laptop i can’t use it normally its hastle connecting it from a external monitor i can even bring my laptop from another place. i tried to look on web but i couldnt find anything same for my laptop even in the support section of dell hope someone can help me for this one.

 

[jhuenne]

Hi there regrding on my previous post about my laptop that has no light on display i manage to troubleshoot on led and motherboard lcd flex cable connection that lcd maybe ok it has output voltage even in motherboard. I did a troubleshoot using a 30 pin lcd from old laptops so still no lights but ihas image. I wonder if it is cable flex?when i test it again the lcd that i test shows imitating light when you press a power the screen flickers for light but dim only.. here is thing if possible does my laptop has proximity sensor for sleep/wake when u open up the lid and close it.. i tried to search were possible the proximity sensor. But it says its on the lcd automatically. Hope some can find schematic diagram that can share for thats a big help for me. Thank you all.