Paul Jackson besides the excellent answer given by @hellomacos consider this just an addendum, The backlight fuse is reference designator F8400 and it is a 3A 32V fuse in a 0603 package
[image|2682012]
[image|2682013]
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For some really helpful information about how the boost circuit on this model is driven etc. check [https://logi.wiki/index.php/Backlight_Troubleshooting |on here]
Paul Jackson besides the excellent answer given by @hellomacos consider this just an addendum, The backlight fuse is reference designator F8400 and it is a 3A 32V fuse in a 0603 package
[image|2682012]
[image|2682013]