all in one screen replacement

[RUK3]

The screen of my all in one desktop has started fading out. Need to replace. Any guidance will be highly appreciated 

[BeemerBiker]

Have you tried any of the windows display tools such as calibration?

https://classroom.synonym.com/fix-fading-color-computer-screen-20673.html

If the dim area becomes readable when you shine a flashlight the problem might be the backlight failing.

FWIW, a "backlight bleed test"  https://www.lightbleedtest.com/#

disassembly / replace screen

https://www.youtube.com/watch?v=wzDUnYzY8BQ

you have either Samsung or LG as shown here

https://partsurfer.hp.com/partsurfer/?searchtext=H1N57AA&searchby=product

I got the above looking this up.

Guessing Samsung:  652255-001

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313&_nkw=hp+652255-001&_sacat=0

if you are in Asia then AliExpress instead of eBay

https://www.aliexpress.com/item/1005003687007869.html

be sure to check reviews of any AliExpress vendor.

and look for good reviews and contact them first

you can usually get a better price by looking up the Samsung or LG part number instead of the HP #