BGA rework

This instructable shows how to do a DIY rework of BGA components, using a hothair gun and commonly available tools.
Sometimes, expecially if they develop high temperatures during normal operations, the  tin solder connecting their pins with board pads tend to become unreliable.
This is due to continuous expansion/shrinking of the component and/or the board caused by heating. To make a professional repair normally an expensive equipment is required, because BGA components have a specific temperature curve for heating, soldering and cooling. But if you're trying to save an old PC or , as in my case, a satellite TV receiver,  this instructable might make your day.

Have fun!

Step 1: Tools needed

What you'll need:

- some scrap iron strips, I got mine from the one used to hold loads on pallets.
- pliers or vice
- hot air gun
- tin solder and flux
- soda can
- scissors
- some thick iron wire,(cloth hangers??)

Comments

[h3roe]

hebat sekali, akan saya coba.. terima kasih

[mraspotcnc]

Very good work...great
thanx......

[Astinsan]

glad to see I am not the only one who does this.

[altomic]

i've done this in the past to reball graphic chips on g3 mac laptops.

though with one I made the mistake of toughing the chip with the gun while it was hot and I believe it moved the chip.

others worked great.

[5150tech]

Well done, you might hack a heating element from a toaster oven to preheat the board it can help with board warping which can be a problem with thin boards.

[jonesgang]

This is a good simple instructable. Is serves the same basic principle of a quality SM rework station. I know this because I used to build them.

Now if you could find a way to use infrared you would have a great thing.

And I would refrain from using any open flame for the heating process as the flux is flammable to open flames, just a safety suggestion.

[mario59]

*RELLY NICE* instructable!
I worked a long time on many many satellite receiver boards with BGA to be reworked.
Even using a gigantic & expensive machine, It didn't much more than you did with this hot air gun...
Only the heating/cooling curve was *respected* in all parameters.
Nothing really more.
I would like to check your procedure ASAP!
ciao
Mario

[zack247]

so how do i know if this bga chip is bad or unsoldered?

[profpat]

using that small roll of solder lead as a thermometer, is very smart, now i dont have to guess if i got the right temp! thanks...

[Fypsigon]

Nice instructable!!! Did the same procedure last week, with a pentorch.... This instructable would have helped me a lot! (it worked just fine even with the pentorch...)