Why 360s fail - Overclock.net

HrnyGoat · 04-27-07

So one day you turn on your 360 and instead of GoW firing up, you get 3 red lights - the notorious red ring of death. So now your console is dead, but what caused it?

Thermal Expansion

You see, the R500 and Xenos chips are attached to the motherboard by means of a BGA (Ball Grid Array) system. The chips have small metalic balls on the bottom, rather than pins, which are soldered to the motherboard. BGA is othen used for non-replacable intergrated components, such as the North and Southbridge on your motherboard, the GPU chip on your grapics card and memory chips.

Normally, there is no problem with using BGA to attach chips to a PCB (Printed Circuit Board). However, the thermal environment is different in a game console, as there is very little space and poor ventalation compared to a desktop PC. So the components are subjected to wide range of temperatures. By themselves, the components are designed to withstand these temperatures. However, when things heat up and cool, they expand and contract. This is known as thermal expansion.

In the 360, all the heat is concentrated around the CPU and GPU, so they will expand and contract at different rates compared to the motherboard they are attached to. This puts stress on the BGA connection between the chips and the PCB. This would not be a problem if lead-based solder was being used, as it is flexible and allows for diffences in thermal expansion. However, thanks to recent laws like RoHS, the use of lead in consumer electronics is no longer allowed. So now we are forced to use tin-based solder, which is less flexible and more brittle compared to lead solder. As the chips and motherboard expand and contract, this puts stress on those tin solder joints, which eventually crack and break the connection between the chip and the PCB. This brings about the red ring of death.

Can it be fixed?

To some degree, yes. There have been varying degrees of success using a heat gun to remelt the solder. However, this does void your warranty and too much heat could cook your components. Another way is the towel fix, discussed here. This seems to fix the problem in a number of cases, although sometimes only temporarily.

Can it be prevented?

Yes. The key is to minimize the amount of thermal expansion subjected to the console. Though it may seem contradictory to common sense, a console left on 24/7 is less likely to fail than one that is power-cycled frequently. The reason is that turning the console off allows components to cool and therefore contract, putting stress on the BGA connections. Turning it back on causes the components to heat up and expand, again putting stress on the BGA connections. So the trick here to minimize the number of power cycles. Dont turn the console off only to play a game 30 minutes later. Just leave it on. Also, dont turn on the console for unnecessary reasons. Short on/short off periods are bad, as well as frequent power cycles.

Another thing that can be done is let the console heat up and cool gradually. When you turn on the console, let it sit at the dashboard for a few minutes before gaming. This allows it to gradually warm up, instead of rapidly, allowing the components to expand at a more even rate - putting less stress on the BGA connections. Do the same after playing a game. Allow the 360 to sit at the dashboard in order to cool off before powering down. Allowing to cool off more slowly allows the components to contract more evenly - again putting less stress on the BGA connections.

I am not guaranteeing this will extend the life of your console, but in theory it should.