Why Would Someone Do This To The Fan Xbox 360

Chosen Solution

My 360 was opened by someone before I got it and the fan was rewired. The fans have 4 wires coming from the harness (red and black to one fan and blue and brown to the second). The previous owner cut the blue and brown wires and tied the blue wire to the fan with the black and the brown from the fan to the red. I was just wondering why someone would do this and should I put it back??

To make the fan run faster and make the console run cooler (at the price of more noise). See e.g. http://www.llamma.com/xbox360/mods/360-1…

If the 4 are combined to make 2 its a 12 volt fan mod and likely means the processor is burnt and overheating.We used to do that for overheating 360s back in the day to make them live longer but sounds like a jet engine taking off when you do…..