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Hi,
I've my Htc P3600 that is not working at all. It has got water inside after a rainy day; it was in my pocket but my pants haven't been usefull enough.
Htc itself told me that the mainboard is damaged by oxide and the device is not repairable. Of course the warranty doesn't work for this case; I've already tried . At this point I wanna try by my self.
Do you know where can I found a new main board, how to replace and to download the sw??
I appreciate your help in advance...P.S. the device was bought 6 mounths ago
Gianluca
well... unless anything was fried...
What happens is that water attack the most sensitive part of the board ... the small traces... they are very thin and corrode easily...
UNLESS something else got fried like a chip or smth... all you need to do is rebuild the traces that got damaged...
it's a nasty job... even for a profi... and you must have special equipment to do it...
or you can take an assurance for breakness accidently...I've done it, and when my phone has falled in the water, i've got a new one...that's great!
I know it's an hard work to restore the traces also because I haven't any special equipment or tools to do it...That's why I need a new mainboard...
I appreciate your help...
P.S. now it is too late for the full assurance....
Is it really...? It's never too late.
Oh,it's insurance BTW.
Have an HD2 here that stupidly I disassembled to replace the camera lens which after reading XDA deep enough I found out that it is replaced from the outside. Well got the phone apart and figured out that that wasn't necessary I reassembled the phone. Well in the process of getting the back off I appear to have damaged the cable the runs up the side of the screen on the volume button side. The digitizer I am told. Knowing this was beyond me I found a repair facility Mission Repair in Kansas that said they could repair it. Shipped it to them and they said that they replaced the digitizer and the lcd screen and neither one fixed the problem. They seemed truly sincere and did not charge me anything but shipping. They said must be the logic board and that was not an affordable piece to replace.
Seems strange to me that the phone was working perfectly before the cable damage that I caused. I did not approach the logic board area at all. Phone running NDT MIUI 19.1 when this happened. Any thoughts from you gurus that maybe they missed.
Thanks in advance
mayve ur ESD dammage it or u touched something and u didnt pay attention ... tru to flash the rom again or look again inside
My s4 was in warranty, and apparently they have changed the motherboard (Assy-PBA), but my vibration motor has always sounded a little weird compared to other s4, and it still does after the repair.
It does have new protective blue stickers/foil on the sim/sd card covers though.
Could it be they just say they replaced the motherboard and got money from samsung but didn't actually replace anything?
Answer.
Shebee said:
My s4 was in warranty, and apparently they have changed the motherboard (Assy-PBA), but my vibration motor has always sounded a little weird compared to other s4, and it still does after the repair.
It does have new protective blue stickers/foil on the sim/sd card covers though.
Could it be they just say they replaced the motherboard and got money from samsung but didn't actually replace anything?
Click to expand...
Click to collapse
It is not a part of the mainboard, see here:
http://images.lmgtfy.com/?q=i9505+vibrator
Hello,
Unfortunately, I am in possession of a Galaxy S4 I9505 which has been dropped into water. It doesn't show any signs of live except a single vibrate after around 6 seconds of holding down the power button. Drying the device in rice hadn't helped, so I upped the ante and submerged the motherboard of the phone in ethanol as per the instructions of a revive-a-phone kit and left to dry for some time. After this it still didn't work, so I assumed that the motherboard was simply too damaged.
I had managed to buy another used phone (working, but with a smashed digitiser) and swapped over the motherboard from that one onto the new. Unfortunately though, it still doesn't work. I have disconnected all of the connections to the motherboard (the externals that is, camera etc) with the exception of the video cable and it still does the same thing.
Is there anything I am missing? Or does it look like the LCD is at fault? If so, would it be in any way possible to exchange the LCD without replacing the digitizer too?
I am sorry for the drawn out question, but any help would be very much appreciated!
-Darran
Dcduo said:
Hello,
Unfortunately, I am in possession of a Galaxy S4 I9505 which has been dropped into water. ... so I upped the ante and submerged the motherboard of the phone in ethanol as per the instructions of a revive-a-phone kit and left to dry for some time. After this it still didn't work, so I assumed that the motherboard was simply too damaged.
I had managed to buy another used phone (working, but with a smashed digitiser) and swapped over the motherboard from that one onto the new. Unfortunately though, it still doesn't work. I have disconnected all of the connections to the motherboard (the externals that is, camera etc) with the exception of the video cable and it still does the same thing.
Is there anything I am missing? Or does it look like the LCD is at fault? If so, would it be in any way possible to exchange the LCD without replacing the digitizer too?
I am sorry for the drawn out question, but any help would be very much appreciated!
-Darran
Click to expand...
Click to collapse
AFAIK, digitizer is connected with LCD by some glue...
However, putting the phone into ethanol itself could potentially kill the phone, as it is a good solvent for any acrylic based paints, isolations etc...
spamtrash said:
AFAIK, digitizer is connected with LCD by some glue...
However, putting the phone into ethanol itself could potentially kill the phone, as it is a good solvent for any acrylic based paints, isolations etc...
Click to expand...
Click to collapse
I think the idea of it is that it will dissolve any deposits from the water that might be left on the motherboard. I had used it to some success on another phone, but no luck this time. In any case, it was only the motherboard that was submerged, not the entire phone as the guides would suggest, so that couldn't be the problem.
Agh, I see what you mean. I have gotten time to view some videos and it seems it is neigh on impossible to remove the screen from the digitizer. I bought a second phone with the only piece I needed being broken!
Hi!
It suddenly rebooted once, I thought the LineageOS was too much for it since I have upgraded it a month ago (maybe two)
Then I had troubles downgrading to a stock FW which was a Lollipop 501 if I'm right. I had to restart the procedure with Odin 2-3 times until it worked.
To be able to get through the initial setup I had to let the phone rest for an hour to let it cool down.
I'm guessing the soldering between the board and the chip got loose or the contacts are imperfect because of the constant overheating.
Can it be? Would a threatment with a heat gun solve this? My PS4 was damaged because of bad cooling / overheating and I could repair it with the heat gun before. Easy-peasy.
It was borrowed from a friend living faaaar away, hence I haven't tried it with the S4 yet. I'm not sure tho' if I can use such a heat on a tiny phone board as on a much bigger PS4 board. (Even the cpu is bigger than the whole mobo of the phone)
One thing is sure, a hair dryer - with maximum heat dead close for 5 minutes - didn't do the trick But that's not even close to the performance of a heat gun.
Thanks!
Hair dryers don't get hot enough to melt solder. A heat gun would work but you have one big issue to overcome: the heat shield. You have to remove the heat shield from the motherboard, then wrap the entire board except the SoC in aluminum foil before applying the heat gun. However, I don't believe a heat gun will help you in this case.
I would get the device checked out by someone who repairs smartphones before attempting to take the device apart to apply the heat gun. The symptoms you are having are not consistent with a SoC lifting from the board.
Strephon Alkhalikoi said:
Hair dryers don't get hot enough to melt solder. A heat gun would work but you have one big issue to overcome: the heat shield. You have to remove the heat shield from the motherboard, then wrap the entire board except the SoC in aluminum foil before applying the heat gun. However, I don't believe a heat gun will help you in this case.
I would get the device checked out by someone who repairs smartphones before attempting to take the device apart to apply the heat gun. The symptoms you are having are not consistent with a SoC lifting from the board.
Click to expand...
Click to collapse
thanks!
what else can it be? i can do a thing or two with electronic devices even if i don't have exact training in the field in question. let's put it this way: if you tell me what to do i can do it. also the board has got about 5 bigger parts and a bunch of small ones. it isn't "rocket surgery"
i don't know about heat shield, i removed the mobo and it looks just like this:
https://upload.wikimedia.org/wikipedia/commons/b/bd/Samsung_Galaxy_S4_I9505_mainboard.jpg
my second thought is that the memory (call it whatever you want) is at its lifecycles end? (too many read/writes, stuff like that?)
it isn't about software that's for sure. as the lcd works i can just buy another s4 broken in two with working mobo and deal with it that way. faster and seems easier (maybe also cheaper) if the heat gun thing wouldn't work.
The side of the board where the SIM card and MicroSD card slots are is the heat shield I was referring to. The card slots are actually stuck to the top of the shield using adhesive. Underneath that shield is the SoC and flash memory. In order to get the board to appear like the picture you likely removed the heat shield.
As to what it could be? A faulty surface mounted component on the board, but without a tech to diagnose it there's no way to know which component failed. If you can frankenstein one good phone out of two, assuming both phones are the same model, I would. The cost to repair it simply isn't worth it today.
Strephon Alkhalikoi said:
The side of the board where the SIM card and MicroSD card slots are is the heat shield I was referring to. The card slots are actually stuck to the top of the shield using adhesive. Underneath that shield is the SoC and flash memory. In order to get the board to appear like the picture you likely removed the heat shield.
As to what it could be? A faulty surface mounted component on the board, but without a tech to diagnose it there's no way to know which component failed. If you can frankenstein one good phone out of two, assuming both phones are the same model, I would. The cost to repair it simply isn't worth it today.
Click to expand...
Click to collapse
yeah that's what i thought.
i think you are wrong with the sim-sdcard compartment. that i have already exchanged once when i had this "no sim card detected phone rebooting" annoying issue. under this sim-sd part is nothing but the plain board with a 2 sided sticky layer. but no chips, no nothing.
but it doesn't really matter since i'll just get a new(er) phone and that's it.
thanks anyway for the help!
cheers
g
@rigo88: You're most likely right. It was three years ago that I had replaced my SIM card tray, and I'm not about to take my S4 apart again just to check, even though it no longer serves as my daily driver.
I wish you luck with your new device.