Precision 7720 LCD screen replacement

[iieeann]

Hi,

 

My 7720 LCD has started to show artifacts, again, after warranty claim 3 years ago.  It looks like the LCD screen lifespan is 3-4 years only.

It is a 4k non touch screen, 40 pins. 

 

Is there a compatible 1920x1080 LCD that will fit in? it seems like FHD screen is using 30pins, not sure if there is 40pins type for 7720.

[Maks0098]

1 hour ago, iieeann said:

Hi,

 

My 7720 LCD has started to show artifacts, again, after warranty claim 3 years ago.  It looks like the LCD screen lifespan is 3-4 years only.

It is a 4k non touch screen, 40 pins. 

 

Is there a compatible 1920x1080 LCD that will fit in? it seems like FHD screen is using 30pins, not sure if there is 40pins type for 7720.

Are you sure it's the screen? It could be a video card, simply, your integrated video card sends an image to the main screen, and the hdmi and dp outputs are connected to the discrete one. So, maybe your motherboard is dying and because of this, artifacts appeared on the built-in video card, but the question is, what kind of artifacts do you have? can I have a photo? Maybe it’s the matrix cable, I doubt it’s the matrix itself. And I think you should at least check the image on an external screen - then you can understand that everything is fine with the discrete. 

Regarding the 40 pin FHD matrix - see my photos, there are all 40 pin FHD 17.3" eDP matrices. You can search/select yourself on the website panelook.com

[Maks0098]

in general, you could take an adapter and connect your 40 pin cable to it and its 30 pin output to the matrix - they are inexpensive, but I’m not sure that it will work 100%

[Maks0098]

There is still an option to take a new 30 pin cable for your laptop, this will be the most reliable and cheapest option, perhaps. since 30 pin FHD matrices are easier to find and they will cost less, presumably. And the cable will not be expensive, here is its part number 03GPF4. here is the link to this cable on Aliexpress:
https://www.aliexpress.com/item/1005005729775527.html?spm=a2g0o.productlist.main.1.1acb5Piw5Piwhw&algo_pvid=5e753bc7-f6df-4c0c-b087-3c473da28042&algo_exp_id=5e7

[iieeann]

Many thanks for the information.  I have ordered the same lcd panel to make sure it works.  external display has no problem.  Even if the graphic card fails, i still have the old original P3000 as backup.