I just removed the digitizer to clean the dust under the screen. I removed the old adhesive and applied the new one. Now my phone won't boot. I checked, I haven't damaged any flex cables. When I press the power button, the phone vibrates but the screen stays black.
When I connect the charger orange LED comes on and then goes away. The phone seems to be going into reboot as I hear it vibrating.
I did put the sim card backward but I have removed it and reinstalled. Could that cause a short on the main board?
Is there a recovery USB mode or anything I can try.
ok, this is a bad screen. I had swaped the main board on my wifes euro sensation and it worked.
Be extremely careful when you remove digitizer. It is easy to break the screen...
Related
so I got a Samsung captivate from my friend. and was planning on rooting it and either using it as a game phone. or giving it to my friend.
background :
most likely has water damage. was out in a damp area.
finicky micro USB port.
issue :
will not boot with out USB cable plugged in.
boots just fine into 2.2, with cord plugged in, already got phone rooted and everything else works fine, just that odd boot issue.
Question :
Anyone know why this could be going on, I'm thinking water damage but I remain skeptical.
Just curious what exactly you mean by it won't boot ... Like you get no response at all, or it stays on the at&t screen, or what?
yeah, when the USB cord is unplugged and I hold down the power button, it stays at a black screen.
but when the USB cord is unplugged and I hold down power, volume up and down. it flashes a battery every 5 or so seconds with a loading icon in the middle. when I remove thumb from the power button it all goes black again.
I got my tf300 some time ago, and just today i recieved all the components needed in order to change it;note that the tablet was disasembled for more than a month, but before that, the battery was charged, so it remained like a month like that as well i don't have best memory of the disasembly proceedure.
So today, i managed to pack it back (without putting the back cover of the tablet, and tried to boot it, but nothing happened.So i put it on the charger where a sound (charging sound) beeped and a red led turned on (later green).I let the tablet charging for more than half an hour, and tried to boot it again but no sign of life at all.I removed all the screws etc and disassembled it for one more time in order to check if everything was put right.
Both digitizer cables was secured.
Screen cable was fine.
Also i tried to check the on and volume rockers cable and by mistake i ruined the plastic top of the female adaptor, but the cable still fits fine inside (that happened during the second disassebly so it was not the original cause for sure).
Also, i noticed that there is an on/off switch next to the power button.This switch was ON the whole time.
I found a button at the digitizer circuit and pressed it (tablet off).
I've tried to remove the digitizer and try to boot.Nothing happened.
What i am afraid of, is that the whole proceedure make me burn some circuit of the tablet by static electricity or by sort-circuit something by my slightly swetty hands.
TheoKondak said:
I got my tf300 some time ago, and just today i recieved all the components needed in order to change it;note that the tablet was disasembled for more than a month, but before that, the battery was charged, so it remained like a month like that as well i don't have best memory of the disasembly proceedure.
So today, i managed to pack it back (without putting the back cover of the tablet, and tried to boot it, but nothing happened.So i put it on the charger where a sound (charging sound) beeped and a red led turned on (later green).I let the tablet charging for more than half an hour, and tried to boot it again but no sign of life at all.I removed all the screws etc and disassembled it for one more time in order to check if everything was put right.
Both digitizer cables was secured.
Screen cable was fine.
Also i tried to check the on and volume rockers cable and by mistake i ruined the plastic top of the female adaptor, but the cable still fits fine inside (that happened during the second disassebly so it was not the original cause for sure).
Also, i noticed that there is an on/off switch next to the power button.This switch was ON the whole time.
I found a button at the digitizer circuit and pressed it (tablet off).
I've tried to remove the digitizer and try to boot.Nothing happened.
What i am afraid of, is that the whole proceedure make me burn some circuit of the tablet by static electricity or by sort-circuit something by my slightly swetty hands.
Click to expand...
Click to collapse
Uhh, the on/off button should be always on ON if you are turning on the tablet, always have it like that...
Also, make sure that the digitizer's end is well plugged
TheoKondak said:
I got my tf300 some time ago, and just today i recieved all the components needed in order to change it;note that the tablet was disasembled for more than a month, but before that, the battery was charged, so it remained like a month like that as well i don't have best memory of the disasembly proceedure.
So today, i managed to pack it back (without putting the back cover of the tablet, and tried to boot it, but nothing happened.So i put it on the charger where a sound (charging sound) beeped and a red led turned on (later green).I let the tablet charging for more than half an hour, and tried to boot it again but no sign of life at all.I removed all the screws etc and disassembled it for one more time in order to check if everything was put right.
Both digitizer cables was secured.
Screen cable was fine.
Also i tried to check the on and volume rockers cable and by mistake i ruined the plastic top of the female adaptor, but the cable still fits fine inside (that happened during the second disassebly so it was not the original cause for sure).
Also, i noticed that there is an on/off switch next to the power button.This switch was ON the whole time.
I found a button at the digitizer circuit and pressed it (tablet off).
I've tried to remove the digitizer and try to boot.Nothing happened.
What i am afraid of, is that the whole proceedure make me burn some circuit of the tablet by static electricity or by sort-circuit something by my slightly swetty hands.
Click to expand...
Click to collapse
"...I found a button at the digitizer circuit and pressed it (tablet off)...". How do you mean? If you're referring to the reset button on the Touchscreen pcb, that usually does not turn anything off, just resets to boot the tab again. In any case, you said "tablet off", meaning it was "on" before that? How do you tell it was on then? One way to find out would be to hook it up to a tv via HDMI. If it comes on, either the lcd or the cable is the problem. I've run into a situation where the tab works (comm. thru PC) but the graphics part is dead, hence no display, in which case the only solution would be a new motherboard as graphics reside within the CPU.
I mean it was turned off before i press the button.I will try to find a cable in order to check it on TV, but if hte GPU is dead how the HDMI works?By the way,i just tried to plug the tablet to my PC, and the PC recognize the device!That probably means that the device is on,but something goes wrong with the display.
TheoKondak said:
I mean it was turned off before i press the button.I will try to find a cable in order to check it on TV, but if hte GPU is dead how the HDMI works?By the way,i just tried to plug the tablet to my PC, and the PC recognize the device!That probably means that the device is on,but something goes wrong with the display.
Click to expand...
Click to collapse
If the GPU is dead then of course there won't be any display. But how do you find out? With the HDMI connection.
Hi Everyone,
I'm have a problem with my One XL. It's an Australian Telstra item. I got soaked in the rain and the phone got wet. I put it in rice for a few days to soak up the moisture, then charged it up. After this the screen backlight would intermittently fail, and i noticed if I squeezed the LHS of the phone it would sometimes make the screen go on or off. The problem got worse over the space of about an hour and eventually the screen would not come on. I opened up the case, and noticed there was a split in the ribbon cable that is part of the screen at the point that it is folded over 90deg (I'm not sure why this was never a problem before the phone got wet?)
So I stupidly got straight stuck into taking it apart to replace the screen before backing up all my stuff. I ordered a new screen of ebay and replaced the old one. Now I am having the following behaviour:
1-Press and hold power button - Phone vibrates once, then does nothing. Screen doesn't come on.
2-Plug into PC - LED flashes red for a while then goes solid red. Screen doesn't come on. Nothing pops up in "My computer"
3-Press and hold (~10sec) power after 2 - Red light goes off. Phone vibrates once every ~30 seconds. Screen doesn't come on.
4-Press and hold power after 3 - Home/Back/Apps LEDs flash 20 times, no other change.
I also tried a number of combos of power + vol -/+ with no success.
Also, I was being lazy and doing this without putting the case back on, and my power button has fallen apart. It looks like that ribbon cable is only ~$5 on ebay, so no big deal, but means I cant really do anymore troubleshooting at the moment.
So I guess the big question is, can the phone still be salvaged? I'm thinking maybe it's stuck in a boot loop with the screen also not working?
Any help is greatly appreciated.
Cheers,
Chris
The first question I have would be did you make sure you got the right screen? There are three different types of screens that came on this phone and you need to make sure you match it correctly. You can identify the type of screen by the colour of the flex cable attached.
Secondly, you should never use the power + volume up button combination, I'm not sure where you saw that information but it puts the phone into Qualcomm download mode which you definitely don't want. The only button combination that should ever be used is power + volume down.
Sent from my Evita
Hi Timmaaa,
Both screens had the same orange/brown flex cables. I did read that there were different screens, but had thought there were only two and that the other had a green flex, so I definitely didn't get that one. Are the other 2 colours close?
I'm not sure where I read the power + volume up thing as I have read a heap of different threads. What would the expected behaviour be if I had put it into that mode?
Thanks for your help.
Cheers,
Chris
The three different screens have very different colour coding on the flex cable, so matching should be a piece of cake, which I believe you've done correctly. Putting the phone into Qualcomm download mode is kinda like a bricked state, if you're getting the red charging led and the cap button lights flashing I think you're ok.
Another thing to note is that you usually need to sync your new screen when you install it. From memory I believe you need to power the phone on, remove the old screen while the phone is on, and install the new screen while the phone is on. If you didn't follow this process that might be why your display isn't working. Other than that your phone might have just suffered some fatal hardware damage due to the liquid ingress, which isn't going to be fixable.
Sent from my Evita
Thanks again Timmaaa,
I had a closer look at my old screen and it does have the small green section on the flex cable which I didn't notice the first time around. Bugger.
So i disassembled it again and swapped back to the old screen. The display still doesn't turn on, but the phone itself now stays on and the computer recognises it! I'm transferring all my photos across to my computer now, then I'll try to sync it properly and see if that helps.
Cheers,
Chris
Ok so I swapped the screens back and forth with the power on, and now it's working! Thanks Timmaaa, I would never have guessed I needed to have the phone turned on in order to swap parts, seems pretty weird. Now just got to get a new power button.
Cheers,
Chris
Awesome. Glad to be able to help.
Sent from my Evita
Hello,
Had a perfectly fine HTC 8x till this morning. Then the pet at home chewed on the USB cable while the phone was charging .. I suspect the power cables may have shorted with the data cables. In any case, now the phone is totally dead when the charger is disconnected. If I reconnect the charger (new cable) then the phone vibrates, afer that the screen lights up for about 10 seconds with the HTC logo and then it switches off - it keeps doing this till the time I remove the charging cable. The Red charging LED does not come on at any time. I have tried the hard reset with Vol down and power key etc. and that did not work. Any help to revive the phone would be greatly appreciated.
Thanks & regards
avsroy said:
Hello,
Had a perfectly fine HTC 8x till this morning. Then the pet at home chewed on the USB cable while the phone was charging .. I suspect the power cables may have shorted with the data cables. In any case, now the phone is totally dead when the charger is disconnected. If I reconnect the charger (new cable) then the phone vibrates, afer that the screen lights up for about 10 seconds with the HTC logo and then it switches off - it keeps doing this till the time I remove the charging cable. The Red charging LED does not come on at any time. I have tried the hard reset with Vol down and power key etc. and that did not work. Any help to revive the phone would be greatly appreciated.
Thanks & regards
Click to expand...
Click to collapse
I bought one listed for parts on ebay a while back that would do a constant boot loop. what i did was buy a cheap phone tool kit 2$ off ebay as well. removed the rear shell on the phone. dang phone is held with sticky adhesive. its take a minute to separate the housing and screen. if you have watched those videos on youtube where there using a blow drier to heat the plastic to take the phone apart is completely nuts. It only takes patients and dont force it . then disconnected the battery. 2 whole screws. woo hoo.. i couldn't do the hard reset either because the phone woudnt charge in off-mode. just constant boot loop. i had no choice to battery pull. strange thing was the charging light would always stay on even when it was unplugged. once the battery had been disconnected from the pcb it hasn't had any problems.
T-MOBUS HTC 8x Developer Unlocked, Sim Unlocked, and Running Windows 8.1
[SOLVED] Disconnect the battery from the phone for few seconds
Problems faced:
1. Boot Loop
2. Factory Reset using Phone buttons never worked, tried everything and never ever got the " ! " icon
3. Phone keeps restarting showing the HTC logo without "quietly brilliant" ( if you don't see that probably not going to boot the OS)
4. Phone does not work at all unless connected to phone charger
SOLUTION:
After trying almost every possible thing i got this to make it work.
1. Open the back cover ( you will need a hair dryer, check YouTube)
2. Unscrew just the two screws at the bottom of your phone and disconnect the clip-pin thingy (this connects the battery to the phone) for a few seconds. ( it has a metallic cover kinda thing)
Press the power button and your phone will go back to normal.
Make sure you connect anything that gets disconnected in the process... they are quite strong so dont worry, nothing will break or cut off, but do be careful.
hi there ok i found a solution you need to take the cover off and the plug in the charger because a button is stuck
there is only 2 screws you need to unscrew and boob it works
My Case
eltselfer said:
Problems faced:
1. Boot Loop
2. Factory Reset using Phone buttons never worked, tried everything and never ever got the " ! " icon
3. Phone keeps restarting showing the HTC logo without "quietly brilliant" ( if you don't see that probably not going to boot the OS)
4. Phone does not work at all unless connected to phone charger
SOLUTION:
After trying almost every possible thing i got this to make it work.
1. Open the back cover ( you will need a hair dryer, check YouTube)
2. Unscrew just the two screws at the bottom of your phone and disconnect the clip-pin thingy (this connects the battery to the phone) for a few seconds. ( it has a metallic cover kinda thing)
Press the power button and your phone will go back to normal.
Make sure you connect anything that gets disconnected in the process... they are quite strong so dont worry, nothing will break or cut off, but do be careful.
Click to expand...
Click to collapse
MY CASE... I've posted a thread explaining that...
This procedure works.. but in my case not at 100% fine... cause i can't insert back the sim card since the bootloops return if i do it...
That left us with a software issue i've not been able to solve yet...
Best regards...
My friend got his new HTC Desire 826 in July 2015. He is having issue with his phone, the screen totally blackouts. He doesn't want to repair the phone because it has no more warranty and will cost much to repair. He asked my help to recover any data possible from his phone.
This was the info I got from him: The phone would restart itself once in a while in the recent few months of use (almost the time that the warranty ended). The screen would black out sometimes, a physical hit on the phone helped to recover it. At the last few moments before the screen totally blackout, the screen showed the mirror image of what it's suppose to show (he had to put it in front of a mirror to read the message). And then it just died and never come alive again. He can't remember whether he set the phone to silent mode.
What I did: Removed and put in the battery, pressing power button gives me a short vibration (I assume that means it can be turned on). Dissemble and reassembled the boards, flex cables etc. No burn mark or broken connection seen. Connect to TV using MHL cable, no signal detected. Soft reset by pressing POWER + VOLUME UP button, it vibrated and screen was still black. Since then, charging after turn on doesn't shows red light below the front camera. The metal cover above the motherboard was usually very hot whenever the phone is on. I'm working like I'm blind, omg >_<.
What's wrong with the phone? What should I do? Possible to repair? Some questions I'd like to ask.
1) Using MHL, does the phone screen need to be working then the TV will show what's on the phone screen?
2) Is there anyway I can connect the phone to other external screen and control externally?
3) I'm hesitant to repair the phone, the heating up of the motherboard scares me that the phone won't last long even after repair. Anyone has this phone and how do u go about this heating issue?
Hi
Try asking in the link below as we dont have a forum for your friends device
http://forum.xda-developers.com/android/help
Good luck