Originally Posted by jasonp2506
Not to be a stickler but this is incorrect. The paste is a countermeasure for the fan. Look at how many laptops sony makes that use thermal paste? No, the problem lies in the fact that lead free solder was used in soldering the gpu and cpu. Which is great for high heat, but on the contrary has a very, very low threshold for rapid temperature change. So....it goes like this...PS3 heats up cools down, heats up cools down, heats up cools down. Same as most anything u heat up with extreme heat and then let it cool...It's gonna warp, crack, shift, etc....
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That is a great explanation of 1 cause for the ylod.
But it is not the only cause.
See here.