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Electronics Forum | Tue Apr 27 08:14:59 EDT 2004 | iqbal
Is anybody doing BGA soldering water clean solder. If yes how you are ensure cleaness. We have boards with Four BGA and 2000 chip and ICs.We are processing with no clean solder but we are getting bad wetting so now we are planning to switch to water
Electronics Forum | Fri Feb 23 08:26:12 EST 2007 | realchunks
No, you can simply replace the bad BGA with a new one. If this is a one of kind BGA and you must use it, then you need to get it reballed.
Electronics Forum | Mon Aug 11 10:47:40 EDT 2008 | dphilbrick
Sounds like bad BGA's to me. I suspect this is rare but you can get black pad on the BGA attach pads just like you get them on a PCB. Do you have un-processed BGA's?(still in package) I would have one tested (not by the manufacturer)!
Electronics Forum | Wed May 02 12:12:23 EDT 2007 | SWAG
Restrictive carriers or lack of carrier in reflow can cause board warpage = bad for BGA's. Might be something to look at.
