Develop Bugs

[Q] swap nand chip?

hi, I didnt find anything about swapping the nand chip from one phone to another so i was wondering if this is possible since my girlfriends phone is broken and contains over 700 pic and videos and she has no backups. im pretty sure the mobo is fried as the charger light will no longer come on and phone will never attempt to boot. there is a guy on craigslist with the same phone( droid incredibe) with cracked screen for cheap. i could swap out parts and make one good phone but would like to swap nand as well as the screen. does anyone know if this is possible without having to flash the nand chip or lose any data? or any other suggestions would be greatly appreciated.

1) It would be helpful to describe what is broken and/or how it happened. Did it malfunction during a backup, bootloop, etc.
(not assuming anything but just saying)
2) If it's a battery issue have you tried using another battery to at least transfer files to a computer?
3) Have you tried using another usb cable in the event your cable gave out?

That would be VERY difficult, if not impossible. That component is not socketed in like you'd expect to see in a computer. Everything is soldered to the board and the chips typically use a ball grid array connector. Installing it on another system board would be nigh impossible without the soldering paste used in manufacturing. I wish I had a better answer for you. Even if I tried to do it with things around the house, I think I'd destroy the chip and the working system board in the process. You'd need a fairly precise oven.

Sorry snoop, tried all that. Different battery, wire etc. I have 2 of them so I did swap stuff around. And I should have said what happened to it. It got stepped on and bent a little. The mobo got cracked.
Loonatic, thank you. That is some good information as I didn't know how it was attached. I am pretty good at fixing things but that sounds difficult.
Thank you both for trying to help or provide some insight.
The memory chip is Pretty much garbage if I can't get it off of the motherboard so I guess it wouldn't be a loss if I broke it. I might give it a shot
Sent from my Incredible 2 using XDA App

It's cool, ironically enough once I read loonatik's response I realized this was way over my head.

[HARDWARE FAULT] Damaged component-need to replace-NEED HELP TO FIND VALUE

Hi guys,
I just have an issue caused by me. When I've opened the phone I've managed to damage one of the components and that cause my vibration motor is not working anymore unfortunately as it is a part of the circuit for it. I'm just about to change it but the problem is I don't know what is the value of that component as I couldn't measure it as it was damaged so much so it wasn't possible to do so.
I would like to ask if is here any1 who can tell me what is the value of that SMD 0402 capacitor ( value in F = farad) - ( see the picture )?
Only problem is if some1 want to check the value it is mean that the capacitor have to be unsolder at 1st to do so. So please, if is here some1 who can do that for me I would really appreciate
Or maybe some1 have the BOM (bill of material) and schemes of HTC One X ? that would help too.
Cheers guys

DAMN! i doubt many people would want to do that mate, bit risky opening it!

Actualy to open the phone is not risky and it is pretty easy.Only thing is to unsolder the cap ad than solder it back that may be tricky and that would need a good SMT experienced person.
I just hope we have some1 like that here (except me lol )
xl VipeR lx said:
DAMN! i doubt many people would want to do that mate, bit risky opening it!
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Click to collapse
Sent from my HTC One X using xda premium

If you get a multimeter and see whether the capacitor is across the power rails if thats the case then more likely it would be a decoupling capacitor that decouples the inductive spikes from the motor when running. I would take a guess that it would be in the order of nanoFarads maybe 100nF.
Even if this component is open circuited that wouldnt stop the motor from working are you sure you haven't put excessive force on the capacitor and it has subsequently levered up the flexible pcb and open circuited a feed i.e. track)from the controller chip that feeds the motor?
For such small work I have a handheld microscope with an inbuilt lcd screen. makes life easier
you need to look more closely in that particular area if theres a minute tear on a corner or 90 degree bend of the flexible mylar pcb

I have checked that under 8x magnifier and I couldn't see any other damage other than that crushed capacitor so I guess it is only that. But to be sure I will check it once again and I look closer on the whole circuit and all the paths
I can't check it at home as I don't have any equip here so I hope I will have some free time at work tomorrow
But thanks fro info, it may help
ikeabuchi said:
If you get a multimeter and see whether the capacitor is across the power rails if thats the case then more likely it would be a decoupling capacitor that decouples the inductive spikes from the motor when running. I would take a guess that it would be in the order of nanoFarads maybe 100nF.
Even if this component is open circuited that wouldnt stop the motor from working are you sure you haven't put excessive force on the capacitor and it has subsequently levered up the flexible pcb and open circuited a feed i.e. track)from the controller chip that feeds the motor?
For such small work I have a handheld microscope with an inbuilt lcd screen. makes life easier
you need to look more closely in that particular area if theres a minute tear on a corner or 90 degree bend of the flexible mylar pcb
Click to expand...
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Sent from my Transformer TF101 using xda premium

so I've checked the whole circuit for vibration and I haven't found any other fault than that damaged capacitor.
So it have to caused only by this for sure.
So I hope some1 can help me as HTC get back to me they can only repair in their repair center and they will not provide any details about any parts and they can't sell any parts either.
So as usual no help at all from HTC, grrrr...
Their customer service is one of the worst

So no luck at all with HTC customer service as I expected
1st HTC Reply
Thank you for contacting HTC regarding your
My name is Olga and I am a Technical Support Agent for the HTC Written Team.
I understand you are having problems with the vibration on your device and would like to know how much such component would cost.
I am very sorry this has happened and now you are having issues with your device, I have spoke to my supervisor about your query and can confirm that we do not have any rough prices of any of the components for our devices.
The reason for this is that we do not sell the components and use individual parts from different regions. The only thing we can do is book your handset in for repair with us. Please note that if you perform a repair yourself or use a 3rd party repair centre, your warranty with us would be void and in case the phone would need any future repairs, there will be a cost, even if it is a manufacturing fault.
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2nd HTC Reply
Thank you for your email.
I am afraid we are not able to view online content, I can not view the links.
In regards to the components, we don't have any information regarding the components on our devices as this is something that is only available at the repair centre. Each device has a part number assigned, this lets the repair centre know which component and type exactly is needed for the repair.
I am sorry we are not able to provide further information regarding this as this is not something available for the public/customers. I have double checked this for you with my supervisor but I am afraid the only thing he advises is to have a look through the Internet for more information.
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So now there is only hope left for me, some1 can find out that info for me

Have you a feed at the motor? Although if it sees the caps open circuit it may just stop the supply anyway.
That's a resistor isn't it? Not a cap.

I haven't tested the circuit with multimeter in any way but it is a capacitor for sure and not resistor.
SMD resistors have the metal contacts only from top-front-bottom side of the component
SMD capacitors have the metal contacts all way round
There are caps on that circuit, some are black and some grey color .
Only problem is that the caps don't have the value marked on the body as some resistors usually have, but normally bigger than 0402 package, so from 0603 and bigger as on the 0402 and 0201 would be really hard to read anyway
backfromthestorm said:
Have you a feed at the motor? Although if it sees the caps open circuit it may just stop the supply anyway.
That's a resistor isn't it? Not a cap.
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Might be worth getting a meter on it then, while setting it to permanently vibrate somehow.. Sure they're apps for that.
Unless your positive it is that cap, then id just pop it out and take a trip to maplins. I've soldered SM parts on phones before, it's fiddly but its possible. They were 50 quid Nokias mind, not 450 quid htcs. Fine iron, and don't get it to hot.

problem is I couldn't test it as the cap was cracked on half so no way to measure
There is no problem to solder/unsolder for me as I'm experience (work in Electronic manufacture business for some time )
backfromthestorm said:
Might be worth getting a meter on it then, while setting it to permanently vibrate somehow.. Sure they're apps for that.
Unless your positive it is that cap, then id just pop it out and take a trip to maplins. I've soldered SM parts on phones before, it's fiddly but its possible. They were 50 quid Nokias mind, not 450 quid htcs. Fine iron, and don't get it to hot.
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If the SMD package is brown in color then it will be a capacitor. if black with no marking then may be a resistor or an inductor. if it is the latter then that would explain why the motor doesn't vibrate.

rikardo1979 said:
so I've checked the whole circuit for vibration and I haven't found any other fault than that damaged capacitor.
So it have to caused only by this for sure.
So I hope some1 can help me as HTC get back to me they can only repair in their repair center and they will not provide any details about any parts and they can't sell any parts either.
So as usual no help at all from HTC, grrrr...
Their customer service is one of the worst
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Surely you understand that HTC can and will not help customers with voiding the warranty of their phone? They support the devices as they are sold and if you decide to open and break the phone yourself you're basically on your own. Helping out with this issue would be to spend time and money to help a customer who has already agreed that no help will be given. Not to sound harsh, but you can't possibly expect any manufacturer to help out with such an issue?
Your best bet would be to contact a repair centre, not HTC. Regenersis, for example, might be able to tell you what component that is.

They only cost Like 50 p for that capacitor
Sent from my HTC One X using xda premium

Hi,
Did you manage to get your phone fixed, please give us an update mate.

well, not yet as I still haven't found what component is it.The HTC won't help as I posted before and I haven't found any1 who could.
But as someone mentioned here before that it may be a resistor instead of capacitor, so I've risk it and I just tried to shorten that pads and vibrator is working.
Problem is I still don't know what component should be there and I'm afraid that if I leave it with just a link between that may damage the whole circuit in time.
So it looks I have to live without vibration or send it for repair what I would have to pay for it.
bigoliver said:
Hi,
Did you manage to get your phone fixed, please give us an update mate.
Click to expand...
Click to collapse
Sent from my Transformer TF101 using xda premium

rikardo1979 said:
well, not yet as I still haven't found what component is it.The HTC won't help as I posted before and I haven't found any1 who could.
But as someone mentioned here before that it may be a resistor instead of capacitor, so I've risk it and I just tried to shorten that pads and vibrator is working.
Problem is I still don't know what component should be there and I'm afraid that if I leave it with just a link between that may damage the whole circuit in time.
So it looks I have to live without vibration or send it for repair what I would have to pay for it.
Sent from my Transformer TF101 using xda premium
Click to expand...
Click to collapse
My thread has been getting a lot of hits and HTC are monitoring it and possibly all my posts (I may be a little paranoid). Which I am grateful for as it is great to know that HTC are doing their best to fix the issue and I encourage them to follow my thread.
I will try forwarding this thread to Urban Strata (HTC Rep) and politely ask him if he can help. I will also try asking at HTC for you, I need to ring them next week on Tuesday anyway, maybe I can persuade them to help you, I did help make HTC aware of the WiFi issue and how many people where affected by it, maybe they can answer this thread to help us. I feel sorry for you mate and if I can do anything I will
Don't get your hopes up though and continue trying to find a solution yourself.
<EDIT> I've sent you a PM

Anyone know how much to replace the motherboard on Bell S3

Hi,
My phone cannot turn on anymore and i got it more than a year from Bell Canada. I went to a place who can repair the phone and found out the motherboard was burn because of some water around the usb port. (Not sure why...because no water go in that i can aware of)
But they cannot fix the motherboard for me and i would like to know anybody know how much samsung will charge for the whole repair?
If expensive, i think i will go to get a new phone instead.
Thank you

[Q] Removing the flash storage chip

Hi all,
the wife's HOX died suddenly, won't turn on at all, wont recoginse being plugged in into either the wall or the PC, no lights, nothing.
Unfortunately she has taken a number of pictures of our 5 month year old son on it, which obviously we would like to have back!
I'm competent with taking the phone apart and putting it back togther, however what I want to know is how the Samsung Flash chip is connected to the mainboard.
I can see black glue around the outside of it, but I am unsure if the underlying pins are also soldered down.
My intention was to razor blade the glue away and then buy a knackered (but working) HOX and transfer the chips over.
Obviously I wouldnt be able to do this if the chip is soldered down. I have monkey hands when it comes to soldering things.
Is anyone able to offer any insight?
I've had a google and read the datasheet for the specific chip, but it says nothing about how it is connected.
Thanks in advance.

ucof said:
Hi all,
the wife's HOX died suddenly, won't turn on at all, wont recoginse being plugged in into either the wall or the PC, no lights, nothing.
Unfortunately she has taken a number of pictures of our 5 month year old son on it, which obviously we would like to have back!
I'm competent with taking the phone apart and putting it back togther, however what I want to know is how the Samsung Flash chip is connected to the mainboard.
I can see black glue around the outside of it, but I am unsure if the underlying pins are also soldered down.
My intention was to razor blade the glue away and then buy a knackered (but working) HOX and transfer the chips over.
Obviously I wouldnt be able to do this if the chip is soldered down. I have monkey hands when it comes to soldering things.
Is anyone able to offer any insight?
I've had a google and read the datasheet for the specific chip, but it says nothing about how it is connected.
Thanks in advance.
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Click to collapse
I really can't see this being successful, sorry. I'm fairly sure the chip is soldered down, and the chances of damaging the chip are very, very high if you want to try and get it off.
If the phone didn't come into contact with water a JTAG recovery might be possible. It may not get the phone working again but it could get your data back. Alternatively companies like DriveSavers have an excellent reputation for getting data off flash chips, but it'll cost you in the region of $400 - $1400 (I got a quote a month or so back, when I thought my HOX was finished.)
I really wouldn't recommend trying to remove the chip though. You could do irreparable damage to the chip, which would render it completely unreadable.

ucof said:
Hi all,
the wife's HOX died suddenly, won't turn on at all, wont recoginse being plugged in into either the wall or the PC, no lights, nothing.
Unfortunately she has taken a number of pictures of our 5 month year old son on it, which obviously we would like to have back!
I'm competent with taking the phone apart and putting it back togther, however what I want to know is how the Samsung Flash chip is connected to the mainboard.
I can see black glue around the outside of it, but I am unsure if the underlying pins are also soldered down.
My intention was to razor blade the glue away and then buy a knackered (but working) HOX and transfer the chips over.
Obviously I wouldnt be able to do this if the chip is soldered down. I have monkey hands when it comes to soldering things.
Is anyone able to offer any insight?
I've had a google and read the datasheet for the specific chip, but it says nothing about how it is connected.
Thanks in advance.
Click to expand...
Click to collapse
Try first change the battery to see if the phone will start again it is the cheap way and most secure

de4life - thanks, I've had a quote for data recovery from Kroll. They want £95+ to look at it and provide a list of what can be recovered and then between £195 and £395 for actually recovering it for me. Far too expensive!
As for JTAG, there's been no water damage whatsoever; I've had a quick Google and it says this is more for Routers. How could I do it to my phone? Im not fussed about getting the phone working again, just want the contents of the flash storage back.
Thant - alas, the was the first thing I tried. New battery has made no difference. Which is annoying as her old Desire Z showed the same symptoms, we bought a new battery and its works again. She's currently using that until we decide what to do.

ucof said:
de4life - thanks, I've had a quote for data recovery from Kroll. They want £95+ to look at it and provide a list of what can be recovered and then between £195 and £395 for actually recovering it for me. Far too expensive!
As for JTAG, there's been no water damage whatsoever; I've had a quick Google and it says this is more for Routers. How could I do it to my phone? Im not fussed about getting the phone working again, just want the contents of the flash storage back.
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Click to collapse
First thing's first, if you do go down the data recovery route try to avoid companies that charge any type of analysis fee. Kroll are a well known company but I've not heard much good things about them. I went through an extensive search of companies when I thought I'd killed my HOX and found DriveSavers were the best in terms of reputation, and they don't charge a fee to look at the phone. They are very expensive though, perhaps more so than Kroll, and you have to send the phone to the States which is daunting and costly in of itself (I assume from your £ quotation that you're UK based?).
It's good that there's no water damage. It's difficult to say what can cause the motherboard to suddenly stop working like that, but it's unlikely there has been a serious short circuit that could have affected the memory chip. Have you tried dissembling the phone completely and putting it back together? It may sound ridiculous to even try it, but when one of my older phones suddenly died I managed to get it working by taking it apart and then just putting it back together again. There are a lot of connections within the HOX motherboard framework that could easily have come loose. You might already have done this, but just a thought.
In terms of JTAG, it can be done on mobile phone motherboards with the right equipment. It's usually used for soft bricked phones to reset the software back to its original form if it's been corrupted, but I have seen cases where hard bricked phones were brought back to life using this method, including the HOX. It's not really something you can do at home (not cheaply, anyway) but there are companies that provide this service. One of the more popular services is here: http://mobiletechvideos.mybigcommerce.com/htc-one-x-jtag-brick-repair/ - I believe they post on here from time to time as well. Again, based in the States, but significantly cheaper than data recovery and as far as I've heard very professional. I don't know of any mobile phone JTAG services in the UK, though they probably do exist.
Keep in mind the data chip on your phone is likely fine. Even if the motherboard has stopped working, the memory chip itself is unlikely to be affected and will still contain all of your data - albeit in a scrambled form. If you send it out to companies then they can potentially damage the chip beyond repair, if you go down the route of sending the phone out to repair/data recovery companies I would urge extreme caution. If it's still on the chip the data itself isn't going anywhere. Take your time and make sure you're sending your phone to the right people, because one false move and your data is gone for good.

any chance to find schematics of the pcb?

Hi guys, i have an issue...my phone dropped in water...everything is working fine (i swapped components with another phone) but not the charging part...battery is good...
disassembled the phone, in the pcb under the metallic plate there is a burned component...i have a friend that can replace it but i need the schematics of the motherboard to choose the right component (voltage, power ...)...i can't find online a schematic of the motherboard, can you guys help me ?
the problem is that phone won't charge, it gets power (with tester i can see it) but phone olny turns on for a second and then shutdown...i think the component is a power regulator or something like that
ps. sorry for bad english

Since you dropped it into water it's big chance that much more parts are screewed. I suggest you to disassemble phone and look to motherboard an electric parts are they rusty, rust will be white color if there is a lot of that than you shouldn't fix that part because a lot of stuff is broken or will break soon. You can try placing phone in supersonic bathtub but that won't help for long time in most cases. If your friend can replace part than he should know how to find that part if he have knoweledge in that area.

don't worry, the other parts work good...i swapped all parts (lcd, speaker, touch and more) with another motherboard and everything working fine...after i dropped in the water i cleaned the phone without turning on from everything...the only damaged part is that chip (burned) under the metallic plate...the rest is clean as new and working...if i can identify that chip (o what the hell is it) a friend of mine can replace it

Well, I doubt you will find scheme anywhere online. What you can do is to post picture of that part which is broken/burned and post picture to some forum for electronics maybe someone will recognize it.

Hey, is this (https://goo.gl/qMGcmV) what you're looking for?

i don't have the phone right now, i asked my friend for a picture but still no answer

thank you but no...i'm looking for the schematics of the motherboard...i'm putting a picture of the damaged component