⟐ Answered July 09, 2025 at 1:29 MST

I purchased a M49514-601 motherboard to replace the old dual core version of the HP 255 G8 series. Come to find out, the screen works (when you shine a light directly on it) but the backlight does not activate. I've tried multiple screens and verified with two other motherboards and found the issue to be on this board. I can use the HDMI with an external screen but that makes it a desktop and not a laptop. Does anyone know where the fuse is located for this particular board for the backlight? I cannot find a schematic for this model anywhere, paid or otherwise. I'm not afraid to cannibalize one of 4 other 255 G8 boards for another fuse if need be. Google and Youtube have not helped. Apparently it’s supposed to be near the lcd 30 pin connector on either the front or back of the board.

⟐ Commented March 13, 2026 at 17:37 MST