Broken Cpu/gpu Chip? Options

[willemoke]

So I wanted to do a reball, I really wanted to try it out ( never done it before ) and thought, why not try it on an old console that's been having rrod for like, ages.
Anyway, I think I might have burned the chip. The chip looked fine when I lifted it en the board look fine aswell, though when I tried to remove the solder I think I might have actually burned a solder point. Could anyone confirm this? I have the same problem with the CPU chip aswell, just 1 point. It's in the middle of the GPU chip and on the left side of the CPU chip.

Pics :




Thanks in advance!

[canyonnehastings]

So I wanted to do a reball, I really wanted to try it out ( never done it before ) and thought, why not try it on an old console that's been having rrod for like, ages.
Anyway, I think I might have burned the chip. The chip looked fine when I lifted it en the board look fine aswell, though when I tried to remove the solder I think I might have actually burned a solder point. Could anyone confirm this? I have the same problem with the CPU chip aswell, just 1 point. It's in the middle of the GPU chip and on the left side of the CPU chip.

Pics :




Thanks in advance!

You have to clean all that solder off with flux and braid anyway, just clean it off and check for uniformity. If you did damage it, which I doubt, there's nothing you can do for that chip now I don't think. You can always buy a new, preballed chip on ebay for around 15 bucks.

EDIT: Also the picture looks like a solderball was ripped off its pad. Make sure you are using a reworking station for this and that the temperature of the chip (reading from a thermocouple or IR thermometer) is between 220 and 245C and leave it at that temperature for like 30 seconds to a minute at least.

It looks like that chip had uneven heat flow over it.

This post has been edited by canyonnehastings: May 4 2012, 05:09 PM

[wilgo45]

Looks like you lost one pad there. On that left edge, close to the bottom of the chip

What did you use to lift the chip ?

With the loss of the pad - I'd say the chip is useless now

My very first Reball attempt went about the same way. Loss of a couple of pads. Trace damage. That was years ago.

It takes practice. It gets better if you recognize where you need to improve. Done dozens of successful reballls now

[Haygar]

Does anyone know who can do reliable reball work in Australia? I'm talking reattaching the gpu to the motherboard as well.

Thanks in advance for any info.