Lenovo z565 no backlight on led screen

I have changed out many laptop screens and never had any problems until now. This laptop had a cracked screen but had a backlight. I ordered new screen and installed it and new screen had no backlight i can see desktop if i shine flashlight on screen. I took the cracked screen and installed it back in to the laptop and now it no longer has a backlight. I have saw online about the fuse needing to be replaced but i can not find it.I took some pictures but no sure if only one can see it because the forum does not allow over size pictures.Any ideas or help any one can give me would be great. I do see a fuse next to where the battery connectors are it has a F12A stamped on the top of it but i read that is for the battery and if it is bad then the battery will not charge but this one does charge the battery. I did not take a pictures of that fuse but i can if any one needs to see it.One pic of the front where the led screen plugs in and the other is the back side of the MB

 

Hi
You might refer to the motherboard block diagram for identifying the part
LENOVO Z565 | hobi-elektronika
Hope this helps

 

Thanks I took a look at the block diagram but don't see any fuse location on there. Thanks for trying to help.