I had problems with my one freezing and got so bad that it wouldnt even fire up! Just kept on getting the dreaded 3 red lights

I bought it off ebay over a year ago and had no receipt or guarantee but thought i would try Microsoft and see what they said about it.....had it collected from me on 15th Dec and was taken away for repair and got a new console delivered back to me on Wed

Proper chuffed to get it sorted for fook all

I also bought a cooling fan for mine and always have it laid flat and kept well ventilated, heard a rumour that it was something to do with the first batch of consoles that were made had something dodgy fitted inside them from a cheap supplier that isnt up to standard and Microsoft changed the part for a better quality one and so far i think the newer batch of consoles have been trouble free.