I was wondering if anyone has tried removing any of the chips or anything on a bricked Tf700 to repair a brick? removing a chip to reprogram on the pc side, if this is possible, as there must be ways to repair with the right tools at hand. if we knew the chip or chips that could be reprogram we could read & write without device. maybe a modchip added to always be able to reprogram any transformer that has a brick.this modchip could save a brick. the modchip would take over & you could always get to the USB/fastboot area no matter if device is frozen, would be able to write to the chip anyways, im sure someone is working on this or has some idea's.
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Hey everyone, I'm new here , and I thought I'd start with a quick question.
My HTC Universal is a bit handicapped (bought it off a friend who said it was broken, apparently the USB plug terminals weren't fully soldered, but I couldn't connect all of them and it will only charge through USB and nothing else.)
If someone has an HTC schematic or a high-res image of the motherboard, I could possibly try to revive USB transfer capabilities (but that area is a bit damaged from not having a small enough soldering iron ), *OR*, if there is a way to reflash from within the OS using a SD card, that would be great.
Hope someone knows the answer to this, thanks!
Edit: And if it's of any possibility, how much would a replacement board be? Enough to satisfy a 100% working USB connection?
No ideas? If someone can at least give me a schematic or a high-res pictures of both sides of the board then I could possibly fix the USB to 100% functionality.
If you check the WIKI for the Universal you shoul be able to find a link for downloading the Service Manual. It shows the total un-assembly-re-assembly process step by step. You may also find instructions for SD flashing there as well. I have never flashed my Uni by SD, but I have don other phones like that. Most of the HTC's are capable. There is even info in the Service manual telling you what to have on the SD and wht to name the files from proper use. Give it a search.
Thanks! I have the manual already so I'll give it a look over. I wasn't entirely sure and I thought I wouldn't see anything but I'll look more in-depth .
Just a side note, does anyone know where I can get a replacement motherboard and how much it will be? Just curious, as that option might be available if it isn't too expensive.
I was given an HTC Incredible the other day, and I quickly found out that the digitizer was non-functional, so I took it apart and found obvious liquid damage inside. Several areas of the board were crusted over with what I assume to be residue from the evaporated liquid. I remained hopeful that the only problem was a dead digitizer, but after carefully cleaning up the board, I noticed some scorched resistors near the digitizer's ribbon connector on the motherboard. On the off-chance that I misdiagnosed the cause of the dead touchscreen, I restored it to factory via recovery, but as I expected, still no go, of course.
It's frustrating, because the device is in beautiful shape in every other way. Screen looks great, not a single scratch on the phone itself, it boots into recovery perfectly as well as into Android.
I fully realize that I will never have this phone working as it was originally intended without swapping out the board, which I don't really plan on doing. I also have no interest in using this as a phone. I'd like to see this phone repurposed as a headless Linux box on my home WLAN. With its specs, it should be able to run Debian and Asterisk quite well (works great on my Seagate DockStar with 128MB RAM/700MHz ARM5-based SoC.) I just hate to see an otherwise perfectly good embedded computer go to waste because I can't enable debugging via the touchscreen.
Is it possible to use a breakout board attached to the microUSB connector to utilize any sort of external input so that I could jump into the phone and turn on debugging/root the device? Or would that require HID drivers to be installed on the device beforehand?
Another idea that I've considered is possibly reflashing it with a rooted ROM or maybe changing some settings on it via CDMA Workshop, I would still need to get into mode for that by pressing ##3424#, right? Argh. Is there another way?
Do either of these options sound viable? Any other suggestions? It should go without saying that I'm well aware that this could be a brick already, but it just seems as though there must be SOMETHING that can be done to at least give me rooted ADB access in the future.
Thanks in advance!
I'm guessing I'm out of luck? Either way, it's not a big deal. It's not as though it cost me anything, but it'd be nice to put it to work in some way. As a Linux geek, there's always a nagging feeling I get when I see a Linux-based device sitting in the corner being under- or non-utilized. Especially embedded.
HELLO,
i would like to try to replace the nand chip of my bricked tv box with a new chip
this because the original chip has been damaged shortening two pins trying to put the device in mask rom mode
my device is t-r42 based on rk3188
the price of the nand flash is about $4,
i can found it on some chinese online store
i hope that replacing the nand, my device will go to mask rom mode, enabling me to do the firmware loading through pc (rkbatchtool)
i know that this mode has been designed specifically to load the firmware the first time,
so i hope my device will go to this mode the first time i power on it after replacing it
any suggestion?
any hint?
i know this must be done with :microscopic` attention
thanks!!
Vicolodo said:
HELLO,
i would like to try to replace the nand chip of my bricked tv box with a new chip
this because the original chip has been damaged shortening two pins trying to put the device in mask rom mode
my device is t-r42 based on rk3188
the price of the nand flash is about $4,
i can found it on some chinese online store
i hope that replacing the nand, my device will go to mask rom mode, enabling me to do the firmware loading through pc (rkbatchtool)
i know that this mode has been designed specifically to load the firmware the first time,
so i hope my device will go to this mode the first time i power on it after replacing it
any suggestion?
any hint?
i know this must be done with :microscopic` attention
thanks!!
Click to expand...
Click to collapse
your going to have to find someone with a hot air rework station to unmount and or remount a new chip. the thing of it is, the pcb has to have perfect traces,,, 0 damage. even if that is met, unmounting and remounting a new chip in a perfect world takes a lot of skill and experience. will it get you into mask rom mode,,, I would guess yes. far as I understand it, thats a hardware thing not a os thing (os=firmware). Unless its something you just want to tinker with just to see if you can do it I wouldnt bother. Thats just me. I have crashed units over and over and got into mask rom mode doing the pin short, purposely trying different firmwares to see if they would work. I am not sure if mask rom mode will happen with out the pin short on a blank chip. maybe thats another question.
if you find someone local that does rework on surface chips, best bet would be ask them. Also a better answer here at least for me would be a close up picture of the chip you speak of, it would probly tell a thousand words. I have done rework, not in the past 5 years but I have. it takes a extremely steady hand and a good feel for when the solder is fluid. Theres tricks to it, do it wrong and theres no fixing the torn traces. Maybe craiglist would point you to someone who does this sort of work in your area. Possibly a local flat screen tv repair center may be able to direct you to someone local also, they are packed with sm chips.
Just some thoughts
stinkster said:
your going to have to find someone with a hot air rework station to unmount and or remount a new chip. the thing of it is, the pcb has to have perfect traces,,, 0 damage. even if that is met, unmounting and remounting a new chip in a perfect world takes a lot of skill and experience. will it get you into mask rom mode,,, I would guess yes. far as I understand it, thats a hardware thing not a os thing (os=firmware). Unless its something you just want to tinker with just to see if you can do it I wouldnt bother. Thats just me. I have crashed units over and over and got into mask rom mode doing the pin short, purposely trying different firmwares to see if they would work. I am not sure if mask rom mode will happen with out the pin short on a blank chip. maybe thats another question.
if you find someone local that does rework on surface chips, best bet would be ask them. Also a better answer here at least for me would be a close up picture of the chip you speak of, it would probly tell a thousand words. I have done rework, not in the past 5 years but I have. it takes a extremely steady hand and a good feel for when the solder is fluid. Theres tricks to it, do it wrong and theres no fixing the torn traces. Maybe craiglist would point you to someone who does this sort of work in your area. Possibly a local flat screen tv repair center may be able to direct you to someone local also, they are packed with sm chips.
Just some thoughts
Click to expand...
Click to collapse
thank you very much,
i will let you know!!
Vicolodo said:
thank you very much,
i will let you know!!
Click to expand...
Click to collapse
A quick alternative for establishing that it is only a faulty NAND is to try booting Linux from an SD card. If that works, then you could look around for someone who has created running Android from SD card for your device and you could at least still use your device in the interim.
HI
My wife's phone (i9300 galaxy S3) has gone wrong and it went off without battery.
I found a new battery, but it lasted only one day. I thus decided to take it for repair,
as I think that this is the charge connector that is broken, but actually, the tech told me that it was probably the motherboard,
as when it used a tool to plug it to the direct charge ports on the side, the phone only bootlooped.
Thing is:
My wife's phone wasn't using cloud or external SD,
it was not rooted.
I tried some android toolkits to connect it, but odin or adb don't detect it, so I have no chance to try and put some new kernel on it.
It has no recovery mode, and when in download mode (1st screen), it actually doesn't last long before it reboots anyway.
Choosing some option will also make it reboot.
So I think it is failed beyond software repair.
But if you have suggestion for this (the tech was at a small street stall and I don't expect him to be high level, no offense, but he seemed to only perform two repairs, screen and charge flex boards, so not much more able than me if he can't go beyond this), feel free?
So my second question is :
Does anyone know how to retrieve the internal storage of the phone without breaking it, and reinstall it in a working way on a new motherboard?
Or alternatively, on an emmc reader such as those used for raspberry cards and so on? (I don't want to put some link, I don't want my message to be filtered)
The photos on this chip are priceless for us, and I would even pay professional to retrieve these (I would prefer not having to, because money doesn't exactly come cheap to me, but I guess I won't be able to make it alone.
So if you know some repair service in Europe that would be able to perform such task, I would be grateful for your sharing of such knowledge.
I saw an alternative in malaysia, but it feels a little too far for being able to do something in case of problem.
Thanks for your attention and time.
Hi,
a friend's Nexus 5 doesn't start anymore. He has some very important texts on the device and he doesn't have a backup. So the idea came to my mind that it might me possible to desolder the memory chip and either read it out with a special device or re-solder it into another Nexus 5. So my questions are:
1. Is it possible to remove the memory chip without destroying it? I won't make it by myself but would try to look for someone who has experiences with this.
2. If possible: Will I be able to read the data on the memory chip without having the hardware environment of the device since I think the data is encrypted.
3. Or, it 2 is not possible: Any chance to solder the chip into another, working Nexus 5?
4. How is the chance that the chip itself causes the overall problem so we don't have a chance at all with it?
Thanks!
emmc memory chip is extremely fragile, it's technically possible to get it off your friend's n5 and put it into another one but unless you have the (expensive) equipment for it, you won't be able to do so.
it would be easier to figure out why it does not start:
does the usb charging port work? i.e.: does the led/screen light up when charging? (if not, try the wireless charging pad)
does the phone not show up in device manager on windows or in dmesg in linux? (it may be in a special mode in case of hardware fault)?
and so on