Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


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BGA | 19 May, 2010

HI Im new to this but i thought i would have a go at fixing my xbox 360 be re balling it,ive managed to remove the gpu and take all the old solder balls of and cleaned it up,then ive put it in a re balling jig with the 360 stencil fluxed the gpu with flux with a fine paint brush then let the solder balls drop onto the gpu and all is ok up to now there all in place,its when i come to heat them up with my heat gun a few of them move into each other so i have to try again.ive only atempted it twice and the same thing happens 10 20 percent of the balls are moving into one another im using SAIKE 852D+ at 200 250 degres with the air fully turned down. any help would be very much appreciated thanks john

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BGA | 19 May, 2010

Hear ya.

Mostly, we production people. So, we shy away from home brew soldering techniques, unless we get ourselves in a mess. That being said, there's a fair amount of stuff on the web about home brew BGA and fine pitch QFP soldering. Here's an example:

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BGA | 19 May, 2010

Try stencilquik. Works good on PCB surface, not sure about component for BGA balls?

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