PS4 Slim - Accepts Disc, Won't Spin - Not a drive issue

I have a SAD-001 board from a CUH-2015a system with a strange issue. It will accept a disc but will not spin it. The problem is not with the drive as I have tried 2 other known working drives on it and got the same result. Does anybody know the specific area of the board that is responsible for making the disc spin? Any specific fuses or other board components I should check? Does it check the disc with the laser before spinning? The laser assembly is trying to do something after the disc is inserted, but I’m not certain if the laser comes on. Thanks in advance.

same here
i have tried to play with out it but apparently you need it to update your system with it