Ok so I dropped my LG G2 and the Otterbox Defender didn't do **** all to prevent the phone from promptly turning off, stop responding to charging and literally wouldn't turn on except for every now and again the camera flash would turn on for no reason.
So I replaced the motherboard, good as new, BUT all my stuff is gone, so obviously it was all stored on the MB, I was wondering if I could melt off the old memory module and put it onto my new MB? Just don't know which is which. We're talking irreplaceable years of my son's life here, will stop at nothing
NAND chip must be located under the back keys pad:
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Val D. said:
NAND chip must be located under the back keys pad:
Click to expand...
Click to collapse
The big black one? Could someone that knows what they're doing desolder that and put it onto a working MB? Would that work? What do you think would be the best course of action to recover the data from it? On the back of the MB there's a metal casing with something thin inside it, and it looks VERY much like a micro SD card, do you think the data is there instead?
Haxxtastic said:
The big black one? Could someone that knows what they're doing desolder that and put it onto a working MB? Would that work? What do you think would be the best course of action to recover the data from it? On the back of the MB there's a metal casing with something thin inside it, and it looks VERY much like a micro SD card, do you think the data is there instead?
Click to expand...
Click to collapse
(Ignore the red circle, just happens to be the pic I found of the other side of the board.)
It looks like the memory is on the other side. Hynix is a known memory chip maker. Also, it looks like a BGA (from the low res pic it is hard to tell, but very likely). You cannot simply "desolder" a BGA chip. If it is that important to you, you need professional help. Even then, it will likely be pricey.
Toshiba chip is the NAND, memory chip on the other side of the board is the RAM, and it's placed on top of Snapdragon 800 SoC. BGA NAND package is possible to replace in theory, using an IR soldering station with precise temperature control. If overheated, the chip will get damaged. First, the boards must be thermo-shielded to protect other components, then both chips have to be removed from main boards, then boards and chips must be cleaned thoroughly (from old solder and flux, there is a technique to do that), then the good chip must be re-balled (special stencil for re-balling the NAND is needed) and soldered in place using the same IR station. I used to do this on computer motherboards in the past, but phone main board is much smaller. Not sure if the standard BGA replacement method will work on it. No repair center will give you any warranty on this work. There is a good chance to end up with 2 dead boards. You need to start making backup copies of everything that is important to you.
Hi guys,
Apparently I purchased a counterfeit LG V20 and I can't get it fixed by LG. The charging port is no good. So you either have to find someone who can micro solder it or buy a new motherboard.
LG sent me a pic of what is no good. I have downloaded CPU-Z and have identified the cpu, gpu, storage and camera. However I don't know what they are pointing to in the photo. It is between the rear camera and the front camera. It has a little notch in it like the one in the above photo. Does anybody know what that is. I am posting here because it appears this thread is familiar with this board. Thank you so much.
<img src="https://i740.photobucket.com/albums/xx41/joedirt42/A018C6711261_1.jpg" border="0" alt="LG v20 photo A018C6711261_1.jpg"/>
not sure why I can't post this photo
Related
so my touch matrix cracked, got a replacement on ebay that looks perfect. i got it to work but everytime a do, a few days later it stops working until i fix it again. i can't seem to figure out how the flexible PCB connects to the back of the LCD module. it looks like HTC just puts a piece of tape over it.
however, i noticed when taking off the old LCD touch matrix that there was some sort of possibly conductive adhesive that made it very difficult to pull off. i got it off but one of the contacts got stuck on there and it i had to scrape it off with a scalpel.
see picture below for exact details. if anyone has any experience in doing this and getting it to work, please let me know, it's so frustrating not having touch on this phone.
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I think you might need to have that professionally repaired. I used to refurbish phones for Motorola but I've never taken anything this advanced apart before. It sounds like you shouldn't have scraped off that conductive adhesive. The digitizer you bought should have been a relatively simple installation but you should have taken your time peeling off the old cracked digitizer. That adhesive is pretty strong and thats why they use it.
You might want to look into getting your hands on some of that adhesive and just replace it all. Sometimes the oils from your skin from handling such a sensitive ribbon cable could have damaged it as well.
P.S. Unfortunately, most of the people here are software genius's, not hardware experts unfortunately.
it's not too advanced. i figure if they at least offer the part as a replacement option on ebay it can't be too hard. and in the mass view, it's only 4 contacts and relatively easy to replace if you have a minor knowledge of electronics.
i keep taping it down firmly and even putting extra tape on top so that the pressure of the case will press down on the pcb to have a firmer connection.
note: i was very careful to observe ESD precautions, so that isn't it, plus there's no semiconductors that could be damaged in the touch matrix.
dudah85 said:
it's not too advanced. i figure if they at least offer the part as a replacement option on ebay it can't be too hard. and in the mass view, it's only 4 contacts and relatively easy to replace if you have a minor knowledge of electronics.
i keep taping it down firmly and even putting extra tape on top so that the pressure of the case will press down on the pcb to have a firmer connection.
note: i was very careful to observe ESD precautions, so that isn't it, plus there's no semiconductors that could be damaged in the touch matrix.
Click to expand...
Click to collapse
Hmm... have you tried good old fashion superglue? I mean not neccesarily putting it on the end of the cable where the conductors are, but on the cable right near the conductors to keep it from moving around and then placing a few strips of tape to sandwich the cable with the housing pressing it down tight?
yes i have but i fear what happens if when pressing it down if it gets on the pads, then i'm just totally screwed. it's a tough situation, i wish there was a contact at HTC that could tell me how it's done.
i'm going to also try contacting their support/repair office and see if they can provide any insight.
dudah85 said:
yes i have but i fear what happens if when pressing it down if it gets on the pads, then i'm just totally screwed. it's a tough situation, i wish there was a contact at HTC that could tell me how it's done.
i'm going to also try contacting their support/repair office and see if they can provide any insight.
Click to expand...
Click to collapse
The superglue option is very risky but it could save your @$$ if you only put very little on the ribbon and then hold it in place untill it dries and then press down once the glue is already dry.
On another note, contacting their support office would probably be your best bet.
Everything you have done, even though not done wrong, it a far greater risk than I would have ever taken... I would have sent it in to be repaired of the digitizer had a crack in it or or the dot matrix got scratched. But thats me.
Unfortunately there aren't too many technicians here on this forum since it is almost completely firmware and not hardware here... Then again, there might be a few. Where I live it's kinda late at night so maybe they're sleeping or something. Lol.
i'm neither a hardware nor a software expertm but i may be able to help... i saw the manual somewhere... www.mdatweak.com/downloads/Wizard_Service_Manual.pdf... try that... maybe it'll help you...
Hi all
My touchscreen is broken, the screen doesnt response on any touch.
Also there is a crack in the front glass what do i need to replace?
And how do i replace that?
Thanx Sander
It depends on what is exactly broken. However, there are whole Digitizer+LCD units on Ebay for about 70 Euros. Then you can find some guides here, which show how to replace the screen. But as it is glued to the housing, it is not that easy.
However, if you decide no to repair it, I would be interested to buy the faulty device, because I need a small part which got lost during my replacement process. So, in that case, let me know.
the LCD itself is ok.
Only the touch screen is broken
because it lay down on a hot light bulb
so its burned down
only the touch is broken and the cover is a crack in;D
Well the problem is, that both parts are glued together and I haven't found a guide yet which shows how to disassemble then. Even the service manual does not show it.
Check this video: http://vimeo.com/7623264
You can see that he also uses a whole unit consisting of both parts. You can watch the video and decide whether you want to try it or not. But it seems much more difficult than with some other devices as e.g. the Kaiser or the HD2 because more things are glued instead of being fixed by screws.
If you have the tools and the replacement LCD + Digitizer, its really not all that hard.
you only need the right torx & phillips screwdriver and tweesers.
the glue holding the parts in is no issue, its actually convenient as you can just press the new part in without re-gluing.
if you decide the follow the HTC service manual, you may like to checkout the link in the bottom of my signature, it points out all the crucial steps the manual will not tell you to do.
also, even if the LCD is good, replace it anyway, mine was good but my digitizer was bad and I replaced both at once, its worth any extra cost to get a preassembled LCD+Digitizer, if you read around you will come to the same conclusion, many on here tried changing the digitizer alone and failed. (many as in like 40+ people, strongly consider getting a premade lcd+digitizer)
I have successfully replaced the digitizer with a unit from Dealextreme that sadly was slightly damaged on arrival but in much better shape than the original.
However I have to say that it is extremely tedious work, especially separating the digitizer from the LCD.
The original glue is very strong, so just getting the LCD+digitizer out of the casing I found kind of risky.
I ended up using a piece of paper to cut the glue that joins LCD+digitizer, as a hard plastic or metallic tool would most certainly damage the LCD.
The whole operation took me 4+ hours, but it IS possible.
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Good to see a success story!
I had only known of a phone repair technician who managed to peform a digitizer only repair, I heard that if you mildly warm the surface it makes it easier to separate, I'm still not game to do it, i noticed just how fragile the parts are when I replaced my bad digitizer with a preassembled LCD + digitizer, and Im still of the belief that its worth paying the difference to avoid the risk.
good stuff buskleif
i managed to seperate the digitiser from the lcd by steaming them apart, then fitting the rubber gasket to the new digitizer. it's a pain in the butt but very do-able. you have to take it very slowly and gently prize them apart as the steam is added. you can also get condensation on the backlight mirrored sheet but it evaporates and has no permanent issues that i've found so far.
So fun
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Can we... CHANGE IT?
:|!!!!!!
Is there a difference with a microsd? I hadn't heard of "eMMC" before....
So that means we can manually expand internal memory? seriously, it'd be awesome!
Like I said last week when looking at the teardown pics, I knew it was an micro-sd card you could tell by the shape
shootomanUK said:
Like I said last week when looking at the teardown pics, I knew it was an micro-sd card you could tell by the shape
Click to expand...
Click to collapse
****ing awesome... this got me really excited xD
How to Search
renatofontes said:
Can we... CHANGE IT?
:|!!!!!!
Is there a difference with a microsd? I hadn't heard of "eMMC" before....
Click to expand...
Click to collapse
Here
helinhof said:
Here
Click to expand...
Click to collapse
I googled it but still had doubt's, that's why I asked.
helinhof said:
So that means we can manually expand internal memory? seriously, it'd be awesome!
Click to expand...
Click to collapse
I don't know if this should be so easy... This is info is from areamobile.de. In this page they comment this:
[UPDATE] On request, Motorola has confirmed the use of an eMMC memory card in the Moto G. A change of memory card would not help, because the operating system can not simply be transferred from the original memory card to a larger, new card. For this you need special hardware that the manufacturers flash their systems to the required memory, explained Mr Schnieth, technicians from the repair service Smartphone clinic in Berlin.
Click to expand...
Click to collapse
Should be great if we could buy 8GB version and change the memory for a 64GB one...
There is no such thing as an eMMC card. eMMC are BGA chips normally. You can get eMMC chips on microSD boards but they wouldn't fit in the area shown on the mainboard. And even if it's a mistranslation and they really meant microSD card then a card would only fit upside down with the contacts pointing upwards. How would that work?
I think some wires have become crossed somewhere as the information doesn't make an awful lot of sense. The only way to be 100% sure is for somebody to remove the metal cover to see what exactly is underneath.
flibblesan said:
There is no such thing as an eMMC card. eMMC are BGA chips normally. You can get eMMC chips on microSD boards but they wouldn't fit in the area shown on the mainboard. And even if it's a mistranslation and they really meant microSD card then a card would only fit upside down with the contacts pointing upwards. How would that work?
I think some wires have become crossed somewhere as the information doesn't make an awful lot of sense. The only way to be 100% sure is for somebody to remove the metal cover to see what exactly is underneath.
Click to expand...
Click to collapse
I want to open up my phone and see what is inside.... But sadly I have a very busy weekend ahead of me. I'll probably do it on monday. =)
renatofontes said:
I want to open up my phone and see what is inside.... But sadly I have a very busy weekend ahead of me. I'll probably do it on monday. =)
Click to expand...
Click to collapse
You are rather brave
Emmc should be faster than a class 10 microsd
card.
So basically, (the one question we all wonder) can we replace this with a bigger one ?
Like American.Graffiti said, can we go from 8/16G to 32 for example ?
xmattjus said:
A regular eMMC card
costs A LOT of money (at ** Components the 32GB model costs €96!), and the one Moto G has probably costs more than a regular chip..
Is it worth it? I don't think so..
Click to expand...
Click to collapse
We can try a regular cheap one to see if it actually works in the first place. Take out the old one, put it in a reader, copy files to a new one and replace
I'm a little confused.... so the microsd on the image was just for size comparison?
Yes, i guess so.
I got tricked too :shame: that's why i asked the question (i just thought to salvage my phone in order to replace the microSD card).
Kameo said:
Yes, i guess so.
I got tricked too :shame: that's why i asked the question (i just thought to salvage my phone in order to replace the microSD card).
Click to expand...
Click to collapse
I think more, it's a Toshiba eMMC Chip with 8/16GB. I've seen eMMC-Cards..and they are much greater then the Micro-SD/MMC Formfactor.
http://goo.gl/6sP1tF << As far i understood the Tech of the Shop where i get my Stuff, is this the Chip Moto G uses. 8GB MMC v 4.51 with the Busarchitecture HS200 (200mb/sec, but capped per Hardware)
eMMC for Motorola G
eMMC production company?
Silly people....
eMMC is an IC and not a slot-load card like MicroSD is.
eMMC are used in just about every phone for their /system, /cache, /data etc. partitions.
The metal cover with the blue dot on the photos is just a shielding for an IC laying underneath, which is not even the eMMC IC lol.
I want the moderator to ban me.
Does anyone have any ideas where I can find replacement parts for this thing? Specifically I'm seeking the little flex board that houses the micro USB connector. It's my wife's tablet and she's hard on connectors. I've repaired several of her phones but this tablet is more obscure it seems.
I've been searching based on printing on the part and I can find a pic of it from google image using "lenovo Blade2_8" but the link to a russian website doesn't go to the part shown.
It looks like this:
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[/URL][/IMG]
Drew
this one or this search and i think you can find more
hardware manual
Thank You! I searched everywhere I could think of; not sure how I missed the eBay one, that's my goto source for most things like this.
I'm hoping that it is the bum part as the device still recognizes that a USB is plugged in momentarily. It's a $50 guess.
delawaredrew said:
Thank You! I searched everywhere I could think of; not sure how I missed the eBay one, that's my goto source for most things like this.
I'm hoping that it is the bum part as the device still recognizes that a USB is plugged in momentarily. It's a $50 guess.
Click to expand...
Click to collapse
wow... that ebay seller sure has a good margin considering the import statement found here it costs 1.5 us dollars per unit (not even 2), yet the seller is the one who makes the price, if you have someone who can buy from and send it to you from china... or some friend in russia for this one i am sure is way cheaper ... or just go to a near lenovo support service that does hw repairs and beg for it or tell them that you will pay double the price (3 usd)
you can also search for the part yourself, i just linked the fast found search results
delawaredrew said:
Does anyone have any ideas where I can find replacement parts for this thing? Specifically I'm seeking the little flex board that houses the micro USB connector. It's my wife's tablet and she's hard on connectors. I've repaired several of her phones but this tablet is more obscure it seems.
I've been searching based on printing on the part and I can find a pic of it from google image using "lenovo Blade2_8" but the link to a russian website doesn't go to the part shown.
It looks like this:
[/URL][/IMG]
Drew
Click to expand...
Click to collapse
If I were you, I would order a new USB connector and then solder it to the ribbon in place of the old one. It is tricky, but doable. Just need a fine tip soldering iron and some helping hands and a pair of tweezers. You do not want to let the ribbon cable heat up and melt. That would be the end. But, like I said, it can be done.
Sent from my SM-N910V using Tapatalk
Success!
I bought and replaced the whole part and it works, charging as normal.
The $50 price tag was steep for a part that probably cost $0.10 in China but, whatever; that's why I work . And my wife is happy now. So I'll consider it a worthy investment.
Jaytronics - I usually do OK fixing my own stuff but I've never been any good at soldering. I'm shaky on a good day and I don't get much practice. I can get it done on larger things but on something that size I'd probably bridge 2 pins or something. I thought about trying it when I failed to find the whole piece but doubt won.
Thanks for the input guys. XDA saves the day again.
Now if I can just find a root and ROM for it.... it doesn't play with Hulu well on stock ROM.
Drew
Hi guys, is there anywhere I can get a fpc battery terminal for the logic board as per image attached? one of the brass prongs got caught in the battery and pinged off to my horror!
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Gutted is an understatement!
@turbotux If it's *just* the connector you want, and you're happy/able to solder it to the board, you can get it here.....
http://www.fonejoy.com/genuine-sams...edge-j1-j5-battery-connector-3711-008737.html
I personally wouldn't touch a hand soldering job like that, and I have been regularly using a soldering iron on all sorts of kit for over 20 years. The connectors are invariably microscopic and the potential to cause other, accidental damage is too high.
But if you want to try it....fair play and good luck (I think you'll need it).
Having actually had a 'close up' look at the connector, the solder points are bigger than I thought they would be (I've hand soldered smaller contacts). It would be possible to hand solder, but you'd need a *very* fine tipped soldering iron. And preferably one that produced a lower level of heat than a 'regular' soldering iron.
keithross39 said:
Having actually had a 'close up' look at the connector, the solder points are bigger than I thought they would be (I've hand soldered smaller contacts). It would be possible to hand solder, but you'd need a *very* fine tipped soldering iron. And preferably one that produced a lower level of heat than a 'regular' soldering iron.
Click to expand...
Click to collapse
Thank you so much for the response, it appears the solder points are big enough, look it's broken each way so it's worth a try I guess.
turbotux said:
Thank you so much for the response, it appears the solder points are big enough, look it's broken each way so it's worth a try I guess.
Click to expand...
Click to collapse
Yeah....you have a broken phone right now so why not try it? Just be *REAL* careful....There are a number of surface mounted components in close proximity to your work area....
Damaging them through accidental contact with the soldering iron (or even simple heat transfer along the board) is a BIG possibility....
---------- Post added at 04:40 PM ---------- Previous post was at 04:31 PM ----------
One final bit of advice (though you probably already know this) 'tin' or coat the solder points on the new part before going near the board. It'll help minimise the length of time the iron is in contact with the board.
I have a soldering iron with a 'home modified' reversable tip. You can see in the picture, at one end is the standard 4mm tip while at the other is a 1mm tip that tapers down to practically a needle point. This is the end that sees the most use, and it is that size of tip that you're going to need.
Just to update, I managed to solder it and it still did not work unfortunely so I've bought another n910f handset, these things happen. However the cause of this I think is down to the extended battery I had pulling on the whole module, I'm going to be running the stock batteries I have from now on.
A worthy purchase however is the extended battery I've picked up for those long cycle rides which should easily see me through, for interest its a 14000mAh Logic3 which I picked up from Maplin for around £40 and compared to its 30000mAh Chinese predecessor it totally kicks ass.
A expensive lesson learned here....
I've gone a slightly different route with my S5 and wife's N4. I have 3 batteries for each and an external charger for both types.
The spare batteries are standard capacity, but they're made by Anker.
Batteries get rotated so there's always a good battery in the phone, one that's charging and a fully charged one waiting for use.
keithross39 said:
I've gone a slightly different route with my S5 and wife's N4. I have 3 batteries for each and an external charger for both types.
The spare batteries are standard capacity, but they're made by Anker.
Batteries get rotated so there's always a good battery in the phone, one that's charging and a fully charged one waiting for use.
Click to expand...
Click to collapse
Yeah the safe approach, I'm going down this route also, thanks for all your help
Yeah....It also minimises wear on the micro usb socket built into the phone...which is one big weak point on these devices.