Originally Posted by cdoublejj
I have fixed several PS3 and the YT guides make me cringe. the first thing to do is not get it nice and hot but, get a griddle an establish a nice hot pre heat so the board doesn't warp and ruin more BGA connections! I use the griddle just like i would put a graphics card on a baking sheet, by using aluminum foil balls.
The solder is gonna be high temp but, if your using a heat gun you have to be careful because they are way powerful and will fry stuff with shear heat alone. You are also gonna need home made diffusers ( giant tips/end) that are square and are the just tiny bit bigger than the chips (gpu/cpu). [I'll try to post pictures when i can]
You are also wanna make cooling modifications so it doesn't YLOD again, trust me just AS5 alone doesn't work I have had customers come back.
It's things like that, that have scared me. I have no experience with heat guns, circuit boards and whatever sort of complications could arise should things go faulty during that process in case the PS3 might not have it's shutdown protection with all these techniques. Sure it looks easy in the videos, but if one has no experience doing this, just say it was just too hot. Say the heat wasted something else on it... how does one know the right temperature. How does one know how long it would take. What's to say the fix only lasts 3 months or less. I've read lots of mixed results doing all this stuff.
Plus I do not know anyone who does re-balling. What's to say I took it to someone and they do a crappy job on it... it happens. Say there is weak capacitors and other things due to age... say all the heat in an oven or whatever blows them or internally. Who knows, there seems to be a lot of what if's. I'm personally not comfortable with heat guns let alone sticking a circuit board in an oven and hoping for the best.
I don't know, heat guns and circuit boards in ovens just seems rather cowboy like to me. It's like the daftness of pouring petrol into a cylinder head while you watch the gaskets blow. I'm not implying those that have successfully done it are cowboys but it's quite a big risk. It just does not spark me with confidence if I was to go through with it.