Solved! HP pavilion laptop screen not working

[saas1980]

I'm trying to resolve an issue related to the HP Pavilion 15-au071na laptop.

The internal screen lights up but displays nothing. When the laptop is turned on, the backlight is on but the screen remains black with a noticeable greyish/blueish tone.

I looked online at various threads, with the following findings:
1. The laptop does work perfectly with an external monitor via hdmi (i'm guessing the GPU is not the issue)
2. BIOS does not show on either the internal or the external monitors
3. When using extended view for both panels, the external monitor is fine but the internal remains the same with the black screen but has these odd looking horizonal lines towards the left (hundreds of them piled together)
4. I have updated the BIOS and GPU driver. Checked to make sure windows is fully updated too. I would have tried Windows re-installation but cannot access BIOS to set the boot sequence but either way, i'm not sure if it's software related.

What else can i try? From my understanding a screen replacement or inverter replacement (not sure what that is) is the last resort

 

[webworkings]

Sounds to me like it is the display itself or the cable that connects it. Either could cause the problem.

 

[jarotech]

Hi, you don't have an inverter with the screen, it's a LED backlight.

 

[saas1980]

Sounds to me like it is the display itself or the cable that connects it. Either could cause the problem.

Yeah I thought the same. Today I took off the base cover, disconnected the cable and then had it re-seated. Did the same by removing the bezels around the display and checked the connector on the back of the screen. Still not working.

I think it's time for a new screen

 

[saas1980]

Hi, you don't have an inverter with the screen, it's a LED backlight.

thanks for pointing that out. Gives me more hope that a new screen will do the job

 

[saas1980]

The model number on the back of the screen is LTN156AT38.

When searching on Ebay/Amazon with the above code, the search results give the same number but with 3 additional numbers at the end.

for eg.

LTN156AT38-H01
LTN156AT38-L02
LTN156AT38-401

Some of the listings with the same code are titled with 'Samsung' but my laptop is HP. Would any of these work or do I need a specific 3 digit-end model number?

 

[robert600]

'Would any of these work or do I need a specific 3 digit-end model number?'

I'm not sure but if you didn't want to take a chance, here's a place that supplies LTN156AT38 without those 3 digit numbers (either glossy or matte).

https/www.laptopscreen.com/English/screen-part-number/LTN156AT38/?set_currency=USD

 

[saas1980]

thanks Robert. Though im based in the UK, the images and details provided in those links helped determining which of those panels on ebay were identical. I purchased one today - hope it works!

 

[jarotech]

Don't bother about the latest numbers and / or letters, they are just a Samsung Product Revision Code for the screen.