Chosen Solution
I am having the same issue… however I replaced my entire display before bothering to check the backlight fuse. After replacing the display, I looked into the backlight fuse and it tested fine but I still have no backlight. External display works fine. No short in the display circuitry either. Kind of lost from here. Update (12/21/2016) @oldturkey03 Also, I was looking at it with my phone earlier and noticed that there are some potentially bad pins on the LVDS connector. Could this be causing the backlight issue? When I look at the schematics, the suspicious pins don’t seem to be related to backlight.. http://i.imgur.com/O9TbOUi.jpg
Pins 10,11,12 seem fried..
@jbwftw not having taken a look at the schematic for your board, I can tell you that it really wont matter. You do have to replace the connector before even thinking of doing any further troubleshooting. That is one of the reasons why I advocate a good visual inspection first. It does not matter which other component you will measure if your connector is gone like that. Personally I think you found your issue
