On 14/11/2011 17:10, Arfa Daily wrote:


"Ray Carlsen" wrote in message
...
Google PS3 BGA reball

Thanks, Adrian. The first thought that came to mind when I saw the
reball video is that I've lived too long. ;-) I might try the "flux and
reheat" process. My eyes are just not up to any more than that.

Ray

I tried these kitchen table 'reflow' processes for a while (although
actually on my professional workbench and using sophisticated hot air
rework equipment !) and I can pretty much say that I had total success
with every one - for about a week ...

Then they come bouncing back. It's known as "YLOD" or yellow light of
death. It is caused by the solder balls under the two BGA ICs giving way
due to thermal cycling, and in no small part I feel, as a result of the
fact that lead free solder is used, which lacks the ductility of the old
leaded solder.

Out of all the ones I did, I think I only had one that survived, and
that was my son's one too. I tried just about every temperature and
duration combination, as well as various different techniques for
applying the heat, including pre-heating the board, and using liquid
flux. I tried all sorts of thermal paste when re-attaching the
heatsinks, including large thick dollops of standard white paste, as
Sony themselves seem to favour in the original construction, thin
scrapings of the same stuff, and thin scrapings of artic silver, as most
people on here will swear is the right way to go. In every case, when
reassembled, the unit would come straight back on, and work a treat. You
could play DVDs in it, or use it as a permanently powered media server
for weeks on end, and it would keep going. But send it back to a serious
gamer to actually play games on, and it would be back inside a few days.

I think that these games are so processor and graphics-engine intensive,
that the amount of heat generated is just too much for any tenuous 'fix'
obtained by the kitchen table methods which are, make no mistake,
definitely *not* actually re-melting solder balls under those ICs.

Just as a matter of interest, the game "Call of Duty" seems to be the
big one for re-killing them.

By all means give it a go, and if you follow the instructions of any of
the people on the net who are publishing these fixes, you probably will
get at result, initially. But don't get too excited, as there will be a
good chance that you will see it come back to haunt you ...

Arfa

Tried all this myself as well, best success I've had was a white X-Box
360 that lasted about 3 months before failing again. It doesn't work. I
suspect you are more likely to warp and damage the PCB before you melt
the solder. Very common failure I suspect as mentioned due to the lead
free solder and BGA package design. Same problems afflict some GPU's on
laptop motherboards.

My suggestion is to try and get it going temporarily for long enough to
get any data off the hard drive, then bin it and get a new one which
hopefully will be of improved design.