Electronics Forum | Fri Oct 15 10:38:42 EDT 2004 | mattkehoe
Thats what I was thinking especially because the pads are not round, they have jagged edges which to me indicates some kind of development issue. mk
Electronics Forum | Tue Apr 18 23:50:38 EDT 2006 | Sidney
When I rework BGA,PAD came off from PCB. Why does this happen? How should I improve this problem? Thanks!
Electronics Forum | Wed Nov 08 08:12:16 EST 2006 | jnaligan
hi... try evaluating eco solder paste Sn96.5/Ag3.0/Cu0.5 from Senju... output is good and i suggest your stencil's apperture ratio with the pad 1:1 when it comes to fine pitches...and BGA pads regards, janry
Electronics Forum | Tue Jul 07 08:42:49 EDT 2009 | ewchong
kpm, you are probably right. under magnification those two pads show some exposed copper which means that they were contaminated or had insufficient solder paste before reflow.
Electronics Forum | Thu Dec 07 00:55:51 EST 2006 | billylim
As you are aware the common method to rework BGA is : 1. Remove BGA with hot air reflow machine ( SRT as current practice) 2. Clean the BGA pad using solder iron and solder wick. 3. Replace BGA with SRT rework machine. The problem we have with
Electronics Forum | Thu Apr 08 07:01:51 EDT 2010 | muarty
Hi, Looking for views and some opinions on the best systems to use to clean pads (particularly BGA) prior to carrying out replacement of parts. I'm thinking of vacuum type desoldering systems. Obviously braid is an option which we currently use, but
Electronics Forum | Mon Feb 23 23:42:11 EST 1998 | Mike
| 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. Depending on your rework station,Useing
Electronics Forum | Mon Mar 30 16:29:31 EST 1998 | Tony Arteaga
| | 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. | Depending on your rework station,| U
Electronics Forum | Sun Jun 07 09:35:16 EDT 1998 | Bob Willis
If any one needs a procedure for rework and repair of BGA there is a document on my Web Site to download www.bobwillis.co.uk | What methods do people use to dress pads after removing and before replacing the BGA? | We use solder wick and a soldering
Electronics Forum | Mon Feb 20 08:33:57 EST 2017 | philc
In your pictures, many of the pads that have lifted from the PCB look as though they have no conenctions anyway. We often find that pads that aren't connected lift very easily. One possible solution would be to bake the BGA's for 12 hours prior to f