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El iPhone 5s de Apple fue anunciado el 10 de Septiembre, 2013. La reparación de este dispositivo es similar a los modelos anteriores y requiere destornilladores y herramientas de palanca. Disponible como GSM o CDMA /16, 32, o 64 GB / Plata, Oro, y Gris Espacial.

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What caused my iPhone 5s to brick)?

I purchased this iPhone 5s used in January 2017 for 100 dollars, and at the time it worked great. I later dropped it in the lake by accident, but recovered it and put it in rice. It worked afterwards, but the vibrator motor glitched for a day or two, eventually correcting itself. It has been 1 1/2 years since and everything was working, until the vibrator motor stopped. Since i recently repaired my iPhone 5’s battery, I figured I could easily take it apart and reseat or replace the motor.

I disassembled the phone, reseated the motor, and then half-reassembled it. Bam! It worked again. I don’t think I reattached the screws inside but I may have, not sure. But I realized the flash on the back broke, so I took it back apart to try and fix it by reseating cables and such. I tried several times without success, and one time while trying to restart it again it just did nothing. Before this it had been starting fine and working normally even when I hadn’t totally reassembled it, but now there was a black screen with no responsiveness, didn’t even show up in iTunes.

I’m baffled as to what happened. I read that if I put the 1.3 mm screw in the 1.2 mm hole I could have broke the logic board and caused it to go into a boot loop with a blue screen, but it does literally nothing. I don’t think I ESD the board, because there’s plastic shields all over it. I did pull a bit hard on one of the screen connectors, but I really doubt that was the problem because everything was working fine after I did that until one of the times I turned it off and removed the screen again to inspect the flash. I also accidentally disconnecting the LCD when it was on, but again it seems unlikely that would break it. Does anybody know what I did and if its salvageable? I don’t want a new phone, the screens are too big for me, and replacing the logic board would cost as much as the phone’s worth, so I’d rather not. Thanks!


Update: I had a weird theory that leaving it alone for a week could potentially fix it. I was correct. I plugged it in today and it started up, working properly with the exception of the power button, vibrator and switch, and volume. I have determined that the connector for these buttons (FPC J2) is broken and needs to be replaced at micro-soldering levels, in other words I’m going to use assistive touch from now on because there is no way I’m buying a micro-soldering kit when there’s a 99% chance I’ll botch the repair anyway.

TL;DR Leaving an iPhone to sit and then charging it will fix it sometimes. Because that’s Apple. If anyone knows how I can fix the connector or jimmyrig it, let me know. If you think its safe enough to attempt micro-solder without frying it, (I’ve never done it before but price and time isn’t a concern, I just don’t want to break it since I got it working well enough), let me know. The connector is iPhone 5s J2, this is what it should look like:

Block Image

and this is what mine looks like:

Block Image

(to see it click on image and zoom to top left)

As you can see I damaged it quite badly, and the flex connector and everything attached would need replacement as well. Unless I could just do some sort of jumper set up with 18 micro solders connecting the plates to the connector wire. Let me know your thoughts in comments.

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"I later dropped it in the lake by accident, but recovered it and put it in rice."

For the record, rice doesn't work. Also keep in mind that even if rice DID work for taking the moisture out, it won’t remove any solids from the water. You dropped it in the lake so the odds are very good that the water contained bacteria, algae, etc.

What you're experiencing is most likely the long-term effects of liquid damage. After liquid gets into your device it will slowly evaporate. That moisture vapor will travel through your phone, eventually settling on everything. Eventually the moisture will leave your phone but not before it has caused some corrosion which you can typically identify as a white powdery substance inside your phone, typically at exposed electrical connectors.

If you're lucky (which you were) the moisture and subsequent corrosion won't create a short circuit in your phone and even after the moisture is gone that powdery corrosion will be relatively stable. As long as it's not disturbed there won't be a problem, except the moment you disassembled the phone and started poking around in there you disturbed that corrosion. Now you have microscopic conductive particles floating around inside your phone, landing who-knows-where and creating all kinds of random havoc. After you sealed it up again the dust had time to settle, as it were, and that's when you get random shorts and the like.

It's POSSIBLE that your motherboard is fine, just temporarily shorted out somewhere. Remove that short and the phone should light up again. To do this properly would require complete disassembly of the phone (including the heat shields) and cleaning everything that can be cleaned in an ultrasonic cleaner. For good measure I'd probably also replace all the cameras and flex cables since corrosion can be inside those as well. Once everything is clean and reassembled you would test it. Best case, it lights up and you're back in business. Worst case, it doesn't and now you have to trace things out to find out what's been damaged.

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This makes a ton of sense because I remember lots of little white flakes coming out of it when I turned it over. I had no idea what they were and dismissed it, but now I know. I suppose its pretty likely that something like this happened. I don't have an ultrasonic cleaner unfortunately, but I'll try my best to disassemble it completely and blow it out with air.

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Could I potentially fix this by using compressed air?

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No, compressed air alone will not work. Imagine you aim an air compressor at a rusty body panel on a car. Do you think it's going to remove the rust down to the bare metal? Not gonna happen. Same logic applies here. You need to chemically and/or mechanically remove all the dirt and corrosion from everywhere on the motherboard, and that includes places like the gaps between ICs and the board itself. You can't do that with compressed air. You will need to remove all of the heat shields on the motherboard and clean it properly. I use Branson GP in my ultrasonic cleaner, followed by a distilled water rinse, followed by a 99% isoproyl rinse, followed by a trip through my dehydrator.

Again, keep in mind that cleaning may only be PART of the solution at hand. If the corrosion is bad enough that it has damaged soldered connections, you may need to reflow the motherboard. If it has damaged ICs, you will need to replace those ICs.

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You MIGHT be able to get away with cleaning it manually, but keep in mind that this isn't recommended. You may go through the whole process and discover it's still not working properly and then you'll wonder if it's because the motherboard is actually damaged or if it's because you missed some bit of corrosion somewhere. It's a fair amount of work for an iffy outcome.

If you don't want to pay for an ultrasonic cleaner (a cheap one will run about $50 on ebay) and can't afford professional service, try finding a local store that offers phone repair and see if they'll run your motherboard through their cleaner. Failing that, approach a jewelry store with the same request (but make sure the cleaner they're using is suitable for electronics). Keep in mind that you'll need to remove the heat shields beforehand, and make sure you transport the mobo in a static-free, secure package.

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Thanks so much for your help. It seems like the reason for death is some sort of corrosion, maybe I knocked off a resistor or something (I don't think this would be the case, but maybe), but probably I have just spread the corrosion somewhere. I never knew that water damage would last that way, but all the indicators inside are red. I may try and find a store with an ultrasonic cleaner and see if that helps, but most likely I'll be forced to scrap this since the phones probably worth 50 dollars. Sadly, replacement parts cost more than the phone. I tried taking the board out yesterday by following a disassembly video (to avoid mistakes this time), but the one in the video popped right out and mine was caught on something. I put pressure on it, and I hope this didn't break it more, because then I'll go clean it and it still wont work :(. In my experience with COMPUTERS, the boards tend to be ok with flexing as long as they don't fracture, but the parts on phone boards are so tiny i can't tell, or work on them.

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