Heat sinks won't make a difference, its an instant 2 red lights overheat, the ram doesn't even get hot. I looked at the solder balls, they look okay. One is probably loose, and when I put it on its side it disconnects, is my only guess. I also read somewhere that the 360 has a sensor that lets it know what orientatation it is, i.e. to the side or on its belly, and that if this is bad it would RL when its on its side, but I can't find said sensor, so I am just gonna have to deal with it...