Hey I know these guys that will modify your xbox 360 with l.e.d.s in it. It is very legit. I will post pics. later of their latest work. Pm me for more info and prices. They do custom painting, L.E.D.S, and modded controllers. I:I
i have personally fixed an xbox with my buddy, also the ps3 yellow light of death, just youtube it, there are instructional videos, its more of a temp fix though
For the XBOX I took it apart and rewired it to cook itself for a minute, after replacing the thermal paste under the heat syncs, for the ps3 I took it apart replaced the thermal paste, heated the mother board up with a heat gun and put it all back together