HP 15-da0073wm display issue

[Norag33]

Hey guys i need your help to fix this problem with this HP 15-da0073wm i7-8550U, this laptop originally has a 40 pin display connector for the Cell Touch eDP display and since i couldn’t acquire that display i decided to adapt the 40 pin connector to 30 pins discarding the touch related pins since the first 30 pins are the same as non-touch eDP displays, the problem is that it worked but not as i expected, you can see the problem in the pictures, i already tried to isolate the display cable from external interference or i think so, i tried with other displays but no video just black screen, i also tried that display on another laptop and it worked normally, please help me i don’t know what to do now

[mon2]

Resolution and scan rates the same between the 2 display models?

[m1ch43lzm]

What about replacing the LCD cable with the proper one for the non touchscreen model?

Like this one: https://es.aliexpress.com/i/1005004116295048.html
Search for "HP 15-da LCD cable"

According to the AliExpress listing is the same cable for:

• 15-DA
• 15-DB
• 250 G7
• 255 G7

Trying to adapt those cables is difficult considering eDP is a high speed signal and you have to carefully match the length of each differential pair, and no splices allowed in the middle of the cable

[Norag33]

What about replacing the LCD cable with the proper one for the non touchscreen model?

Like this one: https://es.aliexpress.com/i/1005004116295048.html
Search for "HP 15-da LCD cable"

According to the AliExpress listing is the same cable for:

• 15-DA
• 15-DB
• 250 G7
• 255 G7

Trying to adapt those cables is difficult considering eDP is a high speed signal and you have to carefully match the length of each differential pair, and no splices allowed in the middle of the cable

I tried with a 15-db cable I had laying around but the issue remains

[Norag33]

Resolution and scan rates the same between the 2 display models?

I do not have the original display I got the laptop without it

[m1ch43lzm]

According to HP partsurfer, these are the compatible part numbers
The non touch screen, as a reference I used 15-da0010la
Part Number : L20379-001
Part Description :
LCD RAW PANEL 15.6 HD BV
From one seller description: L20379-001 B156XTN07.0

Part Number : L20443-001
Part Description :
EDP CABLE NTS

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Touch screen, yours 15-da0073wm
Part Number : L20380-001
Part Description :
LCD RAW PANEL 15.6 HD BV TOP
From a seller description: B156XTK01.0,B156XTK01.0 HW3A, N156bgn-e41, N156bgn-e41 REV C.1

Part Number : L20442-001
Part Description :
EDP CABLE TS

Both are HD 1366x768 resolution

Schematics: https://www.badcaps.net/forum/troubl...78067-la-g07ep