It's a common fault on some of the laptops, the GFX chip has no additional cooling and lead-free solder balls have a habit of developing fractures whe= n stressed. (old XBOX 360's (Red ring of death) and PS3's (Yellow light of death) have similar problems) -----Original Message----- From: piclist-bounces@MIT.EDU [mailto:piclist-bounces@MIT.EDU] On Behalf Of V G Sent: 17 October 2011 20:58 To: Microcontroller discussion list - Public. Subject: Re: [EE] Soldering BGA On Mon, Oct 17, 2011 at 3:42 PM, Jim Franklin wrote: > It was only an AMD graphics chip on a laptop.. but I was determined to win. > (and I did). > > I only did it manually due to the busted template, I have a shiny new > microscope, and a free afternoon. And it's good practice. > Wow nice. What was wrong with the chip? Why was the reason for removing it and reballing it? Also, my biggest problem with these thing BGA chips is designing the PCB an= d routing it. I can't go more than 2 layers or with fancy things like vias in pads or ill get expensive. I have to stick with surface mount leaded components only :( --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .