No image but screen backlight and webcam working perfect

I own an 13' macbook pro mid 2010 and i got a problem with the display actually my Lvds connector was damaged on my logic board and got it changed but now my screen backlight and webcam only are working and i dont have any image on my display. i can toggle my backlight on and off but i dont have any image on my display. i am using an external monitor as display for the time being. help pls.

Ask whoever changed your Lvds connector to finish the job correctly.  They will likely want to know about and correct your problem with their service.

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