QUOTE(82ross @ Nov 29 2006, 06:27 PM)

Heatgun reflow worked for me for a couple of weeks then the freezing started again
I read so many of these.
Do you know about the towel trick, where you wrap it up and let it overheat for a bit? It works, for a while. Obviously it doesn't remelt the solder, but it works for a while. So temporary success can be had with simple heating. The difference between simple heating and solder reflow is only a few degrees.
How do any of you know you actually melted any solder at all? First off, if you used a hair dryer you need to have your head examined. You aren't melting anything with mom's hair dryer, so don't waste your time pulling the whole box apart to do essentially nothing. Go big or stay home.
I put some little smashed out solder chunks on top of each component. When the solder melts, the TOP of the part is at the right temperature. Go a little past that to melt the bottom. Make sure not to blow a molten chunk of solder onto the board if you can help it.
When the reflow works for such a large number of people, but you have another group that finds the solution only temporary or even unfruitful, you have to deduce that their technique is flawed. More evidence is the monkeys who emulate the look of the video (by using a HAIR DRYER) then post results as if they really executed some valid technique.
Don't have a rework station? Use solder chunks. It's the only way you'll know for certain that you've exhausted this method short of abusively overheating your board.
START WITH THE POST ON 11/13/2006
BGA Reflow Technique for I-Book