Electronics Forum | Thu Feb 26 10:33:01 EST 2015 | emeto
Take a look at articles that explain underfill process and how to remove/rework underfill: http://www.finetechusa.com/rework/applications/underfill-rework.html http://www.circuitnet.com/experts/86535.shtml
Electronics Forum | Thu Feb 26 13:29:36 EST 2015 | swiese242
Use the appropriate heat for that part. You can then use techspray flux remover with a brush. Spray the brush, and not the board, to reduce spreading the flux. Acetone or alcohol are less expensive and may work as well.
Electronics Forum | Tue Mar 24 22:03:39 EDT 2015 | davef
Here's some notes from IPC APEX 2015: * Black underfill is Heraeus. It needs to be preheated to 180-200*C for rework. Above 200*C it changes state and becomes difficult. * Clear underfill is from an unknown Korean supplier. * People from Heraeus w
Electronics Forum | Wed Mar 25 03:27:13 EDT 2015 | slave2anubis
Hi davef, thank you for sharing this. Yes all manufacturers recommend their products, and i dont deny that they are good but for a small shop like i have i think the prices are a bit high. What i think would be a good technique, is heating the area t
Electronics Forum | Sun Feb 22 15:46:09 EST 2015 | slave2anubis
Hi, my name is Dacian, and i run a mobile phone repair shop in Timisoara, Romania. Lately we decided to do more advance motherboard repair jobs, and a big problem that we have is, cleaning the board after we remove the chips. We repair manly iPhone,
Electronics Forum | Mon Feb 23 23:24:13 EST 1998 | Craig Fernandes
Can anyone give me any info on the effective removal of BGA's? I need to be able to take a variety of BGA's off boards quickly without creating pad damage. I am not yet concerned about the re-attach process.
Electronics Forum | Wed Sep 23 12:08:21 EDT 2009 | davef
larob57 Mike is not being a SA. The GPU in the XBox is packaged as a BGA [ball grid array].
Electronics Forum | Thu Dec 07 14:17:03 EST 2006 | russ
I would bet that it is a SMT adhesive used to ensure that the BGA does not move during a secoindary reflow prcess. this glue is easily removed with a soldering iron. Russ
Electronics Forum | Fri Sep 25 08:09:46 EDT 2009 | markhoch
DudeBro, who peed in your oatmeal this morning? Relax, it's all good. Your anger is what me find it so funny. Excuse me for chiming in. I could've helped, but saw that he already had the information that he needed. As far as my inexperience goes..I'v
