No idea. the M5120 schematic is one that I got from a friend of mine who got it from a peripheral card manufacturer. He only had the M5120 and not the 5126.
Got ya. So if you ever start repairing boards again. I’d love to send you mine as I am not skilled enough to do this type of repair. I will pay you well. So please just let me know man. I hope you’re doing well!