Chosen Solution
I have been dealing with the insufficient ventilation error, and noticed that the fan was not spinning at all. I did some testing and was able to confirm that the fan works when using an independent power source (9V) battery, but I would like a permanent solution to fix the power to fan issue. When I removed the motherboard I did find that there was some water damage (got this from facebook) and it was over the whole board. I have no idea what I should be checking to narrow down what would cause the issue, is there a diagram that can show me what on the board is related to powering the fan?
I found these schematics on Google if it helps: https://archive.org/details/Xbox_360_Xen… Water damage can be very tricky. It wouldn’t be a terrible idea to start by giving the motherboard a good cleaning, especially if everything else is working. Take plenty of pictures before doing so. Sometimes cleaning the board is a fix, but if it’s not, having those pictures is a good reference point to troubleshoot further.
