I am attempting to replace my Nexus 7 digitizer and LCD screen with one I purchased from gadgetfix on eBay, and I can't get the replacement screen to power on. Can someone advise me on things I can try to get it working?
I used a guide on Android Authority and understand that there's two ribbon cables that need to be re-connected (one that feeds through the body of the tablet, and one dual-connector that wraps around the side), as well as the power connector.
I can tell that the Nexus does power up when everything is re-assembled and I press the power on button. Plug it into my Mac, and Android File Transfer boots up. I think the digitizer is responding because when I touch the screen, it says stuff like "Welcome" and "English United Kingdom" (I'm guessing this is the Welcome language selection screen).
If I press the power button while it's turned on, it says "Screen off." Also, at one point it said "1:30am ringer 70 percent."
This is my second attempt at this - after returning/replacing the first one, I encountered the same issue. So I'm starting to think it's either my tablet or something I'm doing.
Any ideas? Thanks in advance!
have the same problem here... and many more out there...
bought new screen & digitizer from china phone accessories as recommended from you tube user... specifically requested for 3G model since it seems that different version has different screen...
fixed today, already checked the connection multiple times, but the screen wont show anything... there's power for the screen... is there anyway to workaround it... tried the power + volume button press but still no respond... since there's no respond on this thread for more than a year, it must be very bad issue...
would try to swap screen with my other unit but afraid the worst could happen, both unit wont show anything...
Related
Hey all, I'm new to the forums but I can't wait to get my 8125 working. I bought a replacement screen on ebay and a broken 8125.. on receipt all I got was a white screen, then last night I replaced with the new screen and got the cingular logo and the windows mobile "touch anywhere to set up.." message.
Well, touching it did nothing, and the keyboard didn't work, so i opened it up again.
Somehow when I opened it up, the power switch button circuit thing detached from the mainboard (and it looks like the owner before me had actually crazy glued it on!!) .. and now the thing won't power up, won't show a charge light... nothing at all when plugged in or attached to my PC. So I hope that detached power button is the culprit. Upon further inspection I saw that yet another had detached but I can't seem to find where it landed... this one for the little button next to the slider, I don't really know what it does yet.. .
.. so I guess first step is to solder that power button back on and see what happens. Does it sound like a missing power button circuit thing would cause the unit to no longer power on at all (even when soft reset when connected to PC, which used to power it on?)
Pete
i did this. it is hell to solder on. I would say replace the phone
thacmonster said:
i did this. it is hell to solder on. I would say replace the phone
Click to expand...
Click to collapse
Argh.. well, i'll give it a go with the power switch.... do you think it will affect the phone to be missing the comm manager switch off the mainboard too... or will the phone still function without this piece soldered on?
peteclark3 said:
Hey all, I'm new to the forums but I can't wait to get my 8125 working. I bought a replacement screen on ebay and a broken 8125.. on receipt all I got was a white screen, then last night I replaced with the new screen and got the cingular logo and the windows mobile "touch anywhere to set up.." message.
Well, touching it did nothing, and the keyboard didn't work, so i opened it up again.
Somehow when I opened it up, the power switch button circuit thing detached from the mainboard (and it looks like the owner before me had actually crazy glued it on!!) .. and now the thing won't power up, won't show a charge light... nothing at all when plugged in or attached to my PC. So I hope that detached power button is the culprit. Upon further inspection I saw that yet another had detached but I can't seem to find where it landed... this one for the little button next to the slider, I don't really know what it does yet.. .
.. so I guess first step is to solder that power button back on and see what happens. Does it sound like a missing power button circuit thing would cause the unit to no longer power on at all (even when soft reset when connected to PC, which used to power it on?)
Pete
Click to expand...
Click to collapse
Yes, the power on/off button being broken is the reason why you had a white screen, and only getting the splash screen after replacing the touch screen. If you're a good assembly man, I'd suggest try to solder the button back ln place or replace the device. As for the button by the volume slider, that's the comm manager button. If you can ever get to the homescreen, the comm manager icon to activate the comm manager (bluetooth, WiFi, etc. is in the system tray at the bottom of the homescreen.
It sounds to me the new screen was replaced improperly, accounting for nothing happening when you tap it.Try re-installing the replacement screen.
8125
2.25.11.1
Hi,
After a night in a tent my HTC HD2 started to malfunction. When turning on the device I noticed it said ''safe mode'' (Android NAND (sensation rom)). At first I didn't think much of it, because I thought the device had turned of due to a dead battery. However after leaving it for a while to recharge I noticed that after each reboot it would return to safe mode. Then I noticed that the device kept showing that it was in vibration mode --> the volume down button is stuck(not physically though). Also the device kept popping up ''recent activities''... I'm under the impression that this is due to a malfunctioning call button, not a 100% sure though.
After I reflashed it to wm 6.5 the problem still prevails. However I was able to get a more detailed view of the issue:
The windows button lacks every response, the call button does not respond on touch but seems to randomely activate the call function. The home button functions poorly. However the back button, power on button and volume up button function correctly.
The volume down button seems dependent on the other buttons. When pushing one of the buttons below the screen the volume down button is activated and is stuck untill the screen is turned on and off. However the volume up button does not yield such a result. The volume down button still is responsive to touch though, as long as it is not stuck.
Any ideas how to solve this problem, or how to work around it? As a precaution I put the HD2 in a box with a moisture absorber.
Hi. I wish I could give you a better understand that what I can offer but what I think happened is you probably rolled onto your phone while sleeping.
This is not to say your problem could have came from something else but let me explain a little about safe mode.
Safe mode anyone can enter by pressing volume down and holding it while it boots up. It allows the developer a safe mode they can enter similiar to
why your computer has it installed on it. Normally pulling the battery and letting the phone reboot clears this out though. With that being said i think what
has happened is the volume button has stopped working as it should. There are several sites you can go to here on the web to send your phone out
to have it looked at and fixed. All in all it shouldn't be that costly and if your mechanically inclined and (careful) it shouldn't be to hard to do it yourself. I
would make sure you take very good notes/pictures in dismantling your phone because if you put it back together wrong you can make the problem worse.
Ebay, listing found here has the volume button and the tools necessary to open your phone and repair the volume key for around $7 usd.
Please make sure your phone model is supported and you have the know how to do this without making things a bigger issue. I would also
suggest to wait for more info because I could be wrong as well.
Thanks for your time, effort and information.
However I don't think it is a problem caused due to physical damage to the volume button. In addition the phone was in a 'sidepocket' of the tent, making it virtually impossible to roll onto it. Because the call button is malfunctioning as well I can imagine it being motherboard related, addmittedly I am not much of an electrician .
The issue has been partly resolved. Only one problem still exists. When I push the windows button it results in a volume up response. I performed a hard reset but the problem still persists, any ideas what could cause this?
Cheers
The hd2 high level of integration can not fall. Even without the screen broke, other things will break, so the sets of sets of silicone can not throw. Screen indeed not easy to break unless it fell out just in time to have something to knock to the screen.
Hello everybody,
does anybody here see a connection between missing volume buttons(physical switches on the camera module 04w2155) and the tablet doesn't start?
As backgrund info.
Tablet is doing only short vibration when trying to power on, or when connecting to charger. When connecting charger led on the back is flashing but i don't get anything on the display or other feedback except the short vibration. I suspect also some damage with the screen, but cannot confirm. Tablet has a repair of the power button.
Thank you
You might be in APX mode, which doesn't activate the display.
Press the battery-disconnect button inside the tiny hole next to sim card slot and then try to power up your tablet.
Thanks for reply/hint.
What reset did is that for around half a minute the red led was lightning continuously, not blinking. After thag blinks again.
After research about apx mode i'm more and more certain this is my situation, it's active now.
If i connect to computer, it does recognize,search for driver and then disconnects within few seconds.
Since i see this more like a software problem could i stabilise the connection to the computer and recover informations/make backup and restore rom?
Thank you!
Sent from my GT-I9000 using xda app-developers app
We are making progress!
My guess - not to answer your latest question but to the original one, is that your missing volume buttons (physically missing, yes?) very much have something to do with the tablet's current condition. To get to APX mode, the tablet must be started from cold boot with power AND volume pressed at same time (physically pressed). If your missing buttons are registering as being 'pressed' all of the time, it may be difficult to create a boot situation where you can get to your android desktop.
Could you elaborate on the missing buttons?
Please someone else chime in here - I don't even have my tablet.
Thanks for reply.doesn't matter for which question. I put together any information. Issue is getting clearer.
I got the tablet in this condition and attempt repair. Power button was down so i soldered back.
Now the thing is somebody worked before in this area and i suppose the actual powerbutton is one of the volume buttons since the work done before doesnt look professional. I suppose they destroyed the powerbutton and desoldered a volume button to resolder as powerbutton. Which possibly is the case for both volume switches. Now the two vol buttons are nowhere.
The switch has 3 pins,of which the ones at the sides have continuity when the switch is unpressed.
I suppose for boot it could require that the 2 volume switches to be present, that means it could have some continuity check through the switches, and if they are not present it cannot start.
I cannot simulate the 2 buttons because for one switch the soldering pad on the board got burned.
I am going to upload pictures in 5-6 hours when i get home.
If this proves to be somehow true i would order another brand new camera module with all 3 switches, but now i'm unsure if with new board it could start, at least for flashing/recovery.
But having it vibrating and red light flashinv i see a sign it's not yet a "unrecoverable brick"
What do you think?
Thank you
Sent from my GT-I9000 using xda app-developers app
Here a photo of the damaged board
Any answer on the topic appreciated.
Thanks
Sent from my GT-I9000 using xda app-developers app
Anybody any idea about this case?
Sent from my GT-I9000 using xda app-developers app
I think it is definetely a screen damage, maybe a conection cord. Try to clean/replug this cord (cant remember now where it is). This short vibration indicates, that device is begining to boot. Right after vibration Lenovo logo should apear on the screen. If it doesnt - screen is down...
About power board - no connection between power and volume buttons for sure. Power button: + is central, - is other two.
stas.green brings up a good point. If you have opened up the tablet, it is very easy to disconnect the flat ribbon cable that runs the display. When I installed my 3G card the same thing happened to me. Freaked me out but it took 30 seconds to open it back up and correctly seat the cable.
pwstein said:
stas.green brings up a good point. If you have opened up the tablet, it is very easy to disconnect the flat ribbon cable that runs the display. When I installed my 3G card the same thing happened to me. Freaked me out but it took 30 seconds to open it back up and correctly seat the cable.
Click to expand...
Click to collapse
stas.green you're right. the problem is with the screen. i powered the tablet and conected to the computer. i could see the memory access the files and make a backup.
i'm going to examine where is the screen problem origin and possibly to fix it. the screen cables i checked, they fit good. any other weak point known to you?
thanks for help
My next suggestion, not to fix the screen, but to get some function back - connect the tablet to a TV via the mini-HDMI port and see if you are booting to a normal desktop. Hopefully 'External Display' is already enabled. At least you would be able to test if the touch and pen functions of your screen and confirm if they still work even though your backlighting may be broken. Shining a flashlight at an angle on the screen may make the desktop visible if the backlighting is the issue.
Good luck!
Hello, I hope this is the right forum for my question, sorry if I made a mistake. Anyway, my uncle bought this phone month ago in another country, everything worked fine until yesterday when LCD stopped working. After some time of trying to fix it, we concluded that if you press volume (up, down or both at the same time) button and then the power button, screen turns on and works for some time (couple minutes) but then goes black again. If you just press power button (without pressing volume button) it stays black but you can still hear it unlocks when you slide your finger across the screen, so touch screen works, phone works but LCD is black. I am guessing it's loosing connection but how does it turn on every time when I press volume button? It's very confusing. Phone was in a protective case since first day and it hasn't been dropped. Since it's bought in another country, it would cost more to return it there than to buy new one, so do you have any ideas? I have been replacing lcd screens for my friends last two years so I was thinking maybe I can disassemble it and check connections. Any help? sorry for my bad english
Luka keko said:
Hello, I hope this is the right forum for my question, sorry if I made a mistake. Anyway, my uncle bought this phone month ago in another country, everything worked fine until yesterday when LCD stopped working. After some time of trying to fix it, we concluded that if you press volume (up, down or both at the same time) button and then the power button, screen turns on and works for some time (couple minutes) but then goes black again. If you just press power button (without pressing volume button) it stays black but you can still hear it unlocks when you slide your finger across the screen, so touch screen works, phone works but LCD is black. I am guessing it's loosing connection but how does it turn on every time when I press volume button? It's very confusing. Phone was in a protective case since first day and it hasn't been dropped. Since it's bought in another country, it would cost more to return it there than to buy new one, so do you have any ideas? I have been replacing lcd screens for my friends last two years so I was thinking maybe I can disassemble it and check connections. Any help? sorry for my bad english
Click to expand...
Click to collapse
Hello there, I'm from Brazil, as my english may not be the best lol... So I have same phone as you and similar problem... The problem is that volume down doesn't work. Other buttons work fine though. Also, the phone always enters in safe mode, so I assumed the volume down button is being pressed all the time. Except that, I realized that I could enter in download mode (I tested, if I don't press volume down in the combo 'power button + home + volume down' it won't get into download) and if I press volume down to cancel it will actually cancel and restart the phone. So the button is working... Here is the part where I think the problem is similar. There was a time I turned the phone off, through the system as we normally do, and then it wouldn't turn on again. I realized it was actually turning on, but the screen was black. I tried entering download mode and tested on odin and it actually had entered download mode, but the screen was black... Then after several attempts it finally got back on again... So I think there is something related with the button circuit with the lcd, I don't know. I would like to know if you got to any solution there. I guess that instead of bringing you any solution I'm bringing another problem lol. Well if I have any other information I will post it here. Best wishes.
Hello, recently I damaged the screen on my s8 where the screen wouldn't turn on and no input would work, so I figured it was the LCD and digitizer that needed replacing. I've replaced those parts, and the touch works now but the screen never turns on. I turn the phone on and see the blue notification light that turns on when the Samsung boot logo comes up, but can't see the boot logo itself. I can unlock the phone because I've memorized the pattern/placement and I can hear the volume change sounds when I adjust the volume.
I've tried cleaning the PCB contacts, holding the volume down + power button, holding volume up + power + bixby, and I've changed the battery and verified it works. Anybody know what could be the cause? Faulty screen? The company I bought it from is asking me to send it back to verify if the screen is faulty, by I'd rather not go through that trouble if the problem is with my motherboard or something. Although, because everything else works, it does lead me to believe the screen itself is bad?