Rodent wrote Cross d wire meaning they could be touching one another. Pulled a trace. Or lifted a trace or bridged solder point. Or cold solder joint

Many years I have been doing these. And had ones I couldn't read myself. With learning and lots of prectice I still come across problems. If it's not the soldering issues. It seems to always be a communication between motherboard and PC. So many different things to try.

Power off the console completely unplug nand reader to see if consoles boots still.

Possibly could of formatted the motherboard.

Try to go over each point and make sure points are bridged where needed to be sometimes no bridging certain points you can't read the nand