Chosen Solution
I changed the display of my mac, it is working, but it has no light, i can see that it is working because if i put it near the light i can see the desktop, i tryed to put the old one and it has the same problem now. Both are with no light. Can anyone help me? Thanks
The backlight circuit on your logic board has a problem. This could be just a blown fuse or the driver logic is blown.