I've seen the schematics and there is no fuse for the backlight.
The relevant schematics may be found here, and full schematics can be found here.
Sadly the pictures are no longer available. Is there a chance someone made a backup of them?
U23 is a voltage regulator, C574-C576, C579-C581...
I'm trying to locate the fuse for the LCD backlight on the mobo (1P4N7).
Apparently it's either *really* small or not labelled with an "F".
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