Question Thinkpad P50 with W541 3k Screen

Oct 17, 2021
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Thinkpad P50 with W541 3k Screen

I have a P50 with several dead pixels on its 4k screen (LQ156D1JW05).
I tried use the 3k screen of my W541 (VVX16T028J00) to replace LQ156D1JW05.
The connection was easy since both have 40 pin edp 4lane connector. But the 3k panel didn't work.
The weird thing is that when I change back to the 4k panel, it cannot be detected by the laptop.

Following are some details:
NO boot screen on internal screen;
it works with an external monitor after windows boots;
the internal screen cannot be detected by windows after boot;
the drivers can detect both the HD530 and Nvidia GPUs.


I think the EDP connectors of both panels actually have different pinouts. And I burnt somthing on either motherboard or on the EDP cablel)

DOes anyone have a similar experience? Could you let me know which part might be wrong.


Thanks,
 

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