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Technique to recover BGA's in chip-off (pad cratering)  

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jaclaz
(@jaclaz)
Community Legend

This approach seems really interesting
https://ripitapart.com/2019/01/22/recovering-data-from-physically-damaged-bga-emmc-flash-storage-chips/

jaclaz

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Posted : 01/02/2019 10:03 am
Bypx
 Bypx
(@bypx)
New Member

That's a really shitty work and he sucks in soldering techniques.

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Posted : 01/02/2019 11:10 pm
jaclaz
(@jaclaz)
Community Legend

That's a really shitty work and he sucks in soldering techniques.

Did you wake up on the wrong side of the bed today? ?

jaclaz

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Posted : 02/02/2019 10:23 am
JaredDM
(@jareddm)
Active Member

I think what Bypx was pointing out is that if the BGA was properly removed the b***s wouldn't have ripped out of the chip in the first place. Also, that soldering work does look really crappy in the pictures. However, the idea of using glass over solder paste to re-fill the pulled out holes is an interesting one. Perhaps Bypx didn't actually read the article.

I don't agree with the article's claim about solder wick damaging the pads thought. I've never had that issue, but maybe it happens to people who don't have good techniques (e.g too much force, too little heat, no flux).

IMHO it's much better to just use a proper tool such as Ace Laboratory's Spider Board with PC-3000 flash https://blog.acelaboratory.com/pc-3000-flash-spider-board-adapter-how-to-use-it.html

That's what we use. Even if a critical point is cratered for some reason, you can adjust the angle of the pin to get contact.

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Posted : 02/02/2019 1:30 pm
jaclaz
(@jaclaz)
Community Legend

I think what Bypx was pointing out is that if the BGA was properly removed the b***s wouldn't have ripped out of the chip in the first place. Also, that soldering work does look really crappy in the pictures. However, the idea of using glass over solder paste to re-fill the pulled out holes is an interesting one. Perhaps Bypx didn't actually read the article.

Yep, but there are more polite ways (like yours ) ) to convey the message.

IMHO it's much better to just use a proper tool such as Ace Laboratory's Spider Board with PC-3000 flash https://blog.acelaboratory.com/pc-3000-flash-spider-board-adapter-how-to-use-it.html

Sure ) , and my hypothetical Aston Martin DB9 is actually much more stable than my real car (a 1993 Toyota Hi-lux) roll .

How much is that thingy?
Like a couple thousand US$, right? 😯

Good to know however that the Spider Board can work on (cratered) FBGA's.

jaclaz

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Posted : 02/02/2019 2:11 pm
arcaine2
(@arcaine2)
Active Member

Also, that soldering work does look really crappy in the pictures. However, the idea of using glass over solder paste to re-fill the pulled out holes is an interesting one.

Yes it is. I had similar case over where chip came off in really bad condition and DAT0 pad ripped out while cleaing from glue. I, or rather the customer, gave up and did not want to try data recovery from NAND. If only i saw this a month ago, heh.

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Posted : 02/02/2019 9:28 pm
JaredDM
(@jareddm)
Active Member

How much is that thingy?
Like a couple thousand US$, right? 😯

I think I paid like $1400 for the spider board. And that's in addition to the $2,400 for the PC-3000 flash system. Mostly it's used for monolithic microSD cards where the controller has failed but the internal NAND is still good, and it's earned its keep there (doesn't take many cases at $1,200 each).

eMMC isn't much different. Basically just an SD card in a different package. If you have the right pinout you can directly read the NAND of most eMMC chips in cases where the memory controller is bad.

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Posted : 02/02/2019 10:21 pm
armresl
(@armresl)
Senior Member

That's what I always hated about the data recovery business.
The small people can't afford it, and to the big companies it's a drop in the bucket.

How much is that thingy?
Like a couple thousand US$, right? 😯

I think I paid like $1400 for the spider board. And that's in addition to the $2,400 for the PC-3000 flash system. Mostly it's used for monolithic microSD cards where the controller has failed but the internal NAND is still good, and it's earned its keep there (doesn't take many cases at $1,200 each).

eMMC isn't much different. Basically just an SD card in a different package. If you have the right pinout you can directly read the NAND of most eMMC chips in cases where the memory controller is bad.

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Posted : 03/02/2019 1:01 am
jaclaz
(@jaclaz)
Community Legend

I think I paid like $1400 for the spider board. And that's in addition to the $2,400 for the PC-3000 flash system. Mostly it's used for monolithic microSD cards where the controller has failed but the internal NAND is still good, and it's earned its keep there (doesn't take many cases at $1,200 each).

Yep ) , I cannot comment on PC-3000 Flash price, the US$ 2,400 may (or may not) be appropriate (R&D and whatever) but the US$ 1,400 for the Spider Board are outrageous 😯 .

When an acupuncturer meets a watchmaker … wink

jaclaz

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Posted : 03/02/2019 1:58 pm
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