Re: Reball Problem (BGA pad lift)
Hi,
Thanks for the feedback and profile, I'll try to use the method you suggest, hope it can solve the problems ...
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Reball Problem (BGA pad lift)
Hi,
I'm newbie in reball, so pls forgive me if technical words I use are wrong.
What may cause the BGA solder pad lift before or after reball? I am having problems where solder pad lifted during removal of bad solder ball. It also occurred during reball, where the pad lifted after BGA been melted 2-3 times due to misalignment of new solder balls.
My procedure of reball as below:
1. Bake the BGA at 125 deg C
2. Remove bad solder balls manually using soldering iron with solder wick
3. Place new solder balls
4. Reflow (I'm using...
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