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Repair guides for different types of storage devices, ranging from internal hard drives to network attached drives.

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SSD overvoltage, I removed the diode, U30 and U33. 17 shorted caps

Hi! I removed the diode, U30 and U33 (marked on the photos). I checked the resistances of all the capacitors and the resistances between GND and some elements. 17 shorted caps total. I want to recover my data. Donor SSD is on the way. I need your help because I don't have a clue what to check next.

I have a multimeter. I have no Drive Recovery Specialists here and I can't send my drive to anyone. I will fix it by myself but I can't fix it without your help.

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Отвечено! Посмотреть ответ У меня та же проблема

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Who’s drive is this? We need the Maker, Model and it’s size.


Also what happened a bit of the back story might give us a clue.

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@danj

Intel 320 Series 300GB, model SSDSA2CW300G3. I put PCIE 6 pin power cable to CPU 8 pin power slot.

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Ouch! So you’ll need to trace out each of the lines as you likely burnt a few components. I’ve never faced this so I can’t help you. But you likely need to find a set of schematics and board view drawings if they can be gotten! It might be worth the effort to contact Intel to see if they can help you.

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@danj

"find a set of schematics" - I think that's impossible but I have a multimeter so we can do some measurements.

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@ghdoyt - There are ways to find some info if Intel can’t offer you the schematics. As an example the flash chip vendor will often offer the chip in an example with the wiring and components that at least offers a clue.

Sadly, just like traveling in a foreign land one needs a map to plot out how to get to where you need to go. Without a clue it’s just wack a mole to even know where and what to measure.

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It's highly unlikely that 17 capacitors and 2 IC's are shorted, usually only one or two fail and even then it's not one of the small ceramic capacitors, usually the large yellow tantalum caps die.

Did you check them after you pulled them off the PCB? If one component, be it a capacitor or IC is shorted, then all components on the shorted rail are going to give you close to 0ohms when testing for continuity with a multimeter making it infeasible to find the shorted component by removing every component one by one.

Keep in mind a low resistance reading does not necessarily indicate a short when working on these devices. Some IC's (especially the NAND itself) have low resistance by design, so be careful when testing.

The way to go about this is to inject voltage into the shorted rail and check if anything gets hot, you can do this using a thermal camera or by covering the board in isopropyl alcohol to check where it evaporates quickly. Start with a low voltage (0.6v-0.8v) since you're working with NAND memory.

Finding a schematic is unlikely for this. If the data is absolutely crucial I suggest you take it over to a data recovery center before messing around with it further.

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I have new info. Before removing U30 and U33 there was burning hot capacitor C241. Photo:

https://i.imgur.com/S9VOwp8.jpeg

I haven't checked it after removing U30 and U33. What I did next. I took U30 from a donor and put it here. Now SDRAM chip is burning hot after 2-3 seconds, photo:

https://i.imgur.com/X1hcVgp.jpeg

Some elements on the other side are burning hot too, should I keep searching for other hot elements? I fear to break something because of the heat.

>Did you check them after you pulled them off the PCB?

No, I should pay for it. I can do it if you want me to do it, but only on May 13 because the repairman is on vacation until then.

What do you want me to do next?

>I suggest you take it over to a data recovery center

Not an option, stop suggesting me this. Thank you.

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Heat travels, If the other side of the board is getting hot it might not originate from that side but travelling from the other side. As you said, there is a capacitor that's getting hot and the SDRAM chip. Use IPA to figure out definitively all heat sources. You say the drive was overvoltaged, what voltage was it exposed to and to what pins? To sata power lines or data lines? This scenario could very easily have killed the NAND flash chips making data unrecoverable depending on what happened to the drive. More info would be helpful. If the PCB was exposed to a catastrophic overvoltage scenario then I would change my focus onto swapping the NAND chips from the old SSD to the donor SSD hoping that they are fine as it's highly likely that most of the components have been fried.

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@stuig I put 6 pin PCIE power cable to 8 pin CPU slot, so it's 12V overvoltage. Swapping NAND chips is very dangerous so I would avoid it. I have a multimeter, what should I check?

>Use IPA to figure out definitively all heat sources

Well, I can try but it's dangerous.

Okay, C241 (or C220?) is still burning hot after 2-3 seconds. I don't think I can check anything smaller than C241, photo:

https://i.imgur.com/S9VOwp8.jpeg

I can make more photos if you need them. I'm here until the victory.

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Most likely everything got cooked if no input protection circuitry is present which is what I suspect seeing as you keep finding shorted component after shorted component. You can either keep replacing components from the donor and chase down the shorts or swap NAND which unfortunately is most probably also fried.

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@stuig most shorted capacitors are located around the SDRAM chip on both sides, does it mean something? And 3 shorted capacitors around the hot C241

>keep replacing components from the donor

What components exactly? We need some testing, I have a multimeter, let's test.

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Haven't located schematics yet, but here's the magic decoder ring information from your model number.

SSD SA 2 C W 300G 3

SSD - Product Type = SSD

SA - Bus Architecture = SATA II 3Gb/s

2 - Form Factor = U.2 15mm (also used for SATA 2.5" 7mm drives)

C - Cell Technology/Height = MLC, 9.5mm

W - Feature = Consumer Series, Liberty Harbor, Harris Harbor, Gen1 Intel® Optane™ Memory Series, Brighton Beach

300G - Drive density/capacity = xxxG = GB Intel NAND/Optane

3 - Lithography = 25nm

Update (05/03/24)

I know you said you couldn't send your drive out, but Intel does put out a list of data recovery companies that work with their SSDs.

Data Recovery Options for Intel® SSDs

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I think it's better to start testing. I have a multimeter and I can solder and desolder components (I need to pay for that though).

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"Intel does put out a list of data recovery companies that work with their SSDs" - useless info. As I said, I'm not going to send my SSD to anyone.

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@ghdoyt I mentioned that in my comment; the link is more for anyone else who comes after you with the same sort of problem who may be willing to send their drive out for repair as a last resort, so it really wasn't about you.

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@dadibrokeit sending the SSD to an authorized repair center is an obvious choice but anyway thank you for your effort

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@ghdoyt Yes, it is an obvious choice, but it could be useful to have a list of services that have been vetted by Intel itself if you're looking for that kind of solution.

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