LVDS fuse blown? Display blank

Replacing cracked screen on 3rd generation Thinkpad X1 Carbon. Cust used for a while with cracked screen and then it went black after a few days. Installed new screen, still black. No image at all. System still works fine when external monitor is connected however checking in device manager built in screen is not detected at all so it's not just backlight. Thinking maybe a blown fuse or issue with LED driver? Can't find schematics for this motherboard.

Update (09/12/2016)

Motherboard part numer 448.01406.0011. Lenovo FRU 00HT361.

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Pics of LVDS connector and bottom side of motherboard underneath LVDS

Answer this question I have this problem too

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For me it was fuse f3. After creating a short cut it works. Really important to unplug the power while changing displays.

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managerharry will be eternally grateful.
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