Backlight on Samsung XE303C Chromebook

I have a fleet of about 400 chromebooks, mostly Samsung XE303C. Most repairs on these are simple enough, easy parts to replace. However I have a couple with dead backlights. Everything else works, so it seems a shame to part it out over such a small problem. Could anyone with more skills than me help identify the parts on the main board that control the backlight? Or any suggestions would be great.

Thanks!