Chosen Solution
We replaced a broken screen with a new screen. Now there’s no backlight. suspect fuse is blown.
dkibby714 schematics may or may not be available for your specific motherboard. We would need to see any identifying marks on it. Also, post some really good pictures of both side off your board. That way we can try and assist further. Remember that it could be a fuse but could also be the LED driver or even the connector. You’ll need the schematic and at least a multimeter and we need to see what board you got.
