I will give you the links to different site pages to see how to reball and what you need for tools
1st go to this link>http://store.sra-solder.com/product.php/6267/0
Tool needed to remove and replace GPU & CPU:
> go down page and look at the shelds.
> now go to down the page and watch vid about how to remove BGA's
The clip is Xytronic Video Clips Ok now you know how to take off a BGA.
Ok so lets see how to reball and replace BGA with out big money Machine.
1st go to this site>http://www.solder.net/ezreball.asp
2nd watch this Vid here>http://solder.net/technical/ezreball_demo.asp
3rd how to put on BGA the easy way>http://solder.net/stencilquik/default.asp
4th watch vid on how to do it here>http://solder.net/technical/SQdemo.asp
5th read this>http://www.emulation.com/pdf/102003BGA_Reb...tion_Manual.pdf
it will show you about ramp temp & profile.
you will need a IR Temp gun.
You will need a hot plate like this>http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=59&page=: go down the page and read about the hot plate.
Ok lets review:
Take off BGA with HOT AIR AND PIC LIFT:
REMOVE ALL SOLDER FROM BGA>
REMOVE ALL SOLDER FROM PCB
USING "BEST REBALL KIT REBALL BGA>
REFLOW BGA USING HOT PLATE>
REPLACING BGA ON PCB:
FRIST PLACE "BEST StencilQuik on PCB>
REFLOW BGA USING HOT AIR>
PLACE SHIELD AROUND BGA>
USING IR TEMP GUN AND HOT AIR REFLOW BGA ON THE BOARD MAKING SURE YOU DO NOT OVERHEAT OR UNDER HEAT > YOU MAKE SURE BY TESTING WITH A SCRAP MACHINE FIRST>
YOU NEED TO TIME HOW LONG YOU PLACE HOT AIR ON BGA TO GET THE RIGHT RAMP PROFILE>
LET COOL AND YOU ARE DONE!!!!
This is the easest way I know how with out the big money machines>