So I have an issue with a 2012 N7, warranty is long gone. I've tried all suggestions from billykxda's thread, but no luck thus far. I've also tried Google's official page on the topic as well.
I've left the device charging for many consecutive hours, both via AC power and USB, and I suspect my issue resides with the LCD screen. Also tried a hard battery pull. It's also important to note that I haven't undertaken any mods on the device at all, i.e. the bootloader is still locked and USB debugging is not enabled yet.
When I plug the device into my PC the Win7 driver notification bubble pops up, usually reporting either an Unknown Device or an "APX drivers not installed" message. I'm unable to get it to boot into Fastboot, Recovery, or Android OS. Plugging/unplugging the device via USB yields these driver messages over and over again, along with the Win7 sound notification, so the device isn't totally dead, but no amount of button combinations or 30-60+ second button holds are getting any response.
Has anyone else experienced these issues before? Do you think my device is totally dead?
AvidPhisherman said:
Has anyone else experienced these issues before?
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Yes; I am also experiencing similar issues. Unfortunately, I have not reached a solution. I just replaced a broken screen for a friend. Once I got the screen in, I tried turning it on but didn't see anything happen. I began to research and thought I had the dead battery issue that most people get when leaving it unplugged for an extended period of time. I plugged it in using the wall adapter for a few hours, used the power+volume buttons and still didn't get any response. Finally, I decided to charge it with my PC. The PC recognized something was plugged in, installed drivers, and now I have a Nexus 7 in my connected devices list. While connected to my PC, I hold power+volume down and hear the USB disconnect, reconnect, and have an unrecognizable device attached. This leads me to believe that the Nexus 7 is working properly and the screen is not working. I have taken the entire device apart to re-seat all connections 3 different times and still cannot get it to work. I hope someone can shed some light on our issues!
Edit: I forgot to mention, I also tested the battery with a digital multimeter. It reads approximately 3.79 volts DC. I thought it may be important to state this in case the issue is battery related. I'm not certain what the correct value should be for it to work properly.
I am currently trying to diagnose this problem. Yesterday, I hopped on Craigslist and bought a working Nexus 7 for 50$. I am currently taking it apart to rob parts from it and figure out where the problem is. So far I have tested the battery. The battery reads approximately 3.78 volts DC so I can probably rule this out as my problem.
Also, I noticed something strange yesterday. I took the broken Nexus with me when I went to meet up with the man selling the used/working Nexus. While I was outside in very bright sunlight, I pushed the power button on the broken Nexus. I noticed that I could actually see the screen doing something. It was all fuzzy and had lines running every where, but you could in fact see it doing something. I think the replacement screen I received is bad, but I won't know until I start swapping parts.
AvidPhisherman, for now maybe try taking your Nexus out in very bright sunlight and see if you can see the screen do anything when you press the power button. Also, I'm not trying to hijack the thread. It seems that we have very similar issues. I hope to find something that fixes both of our problems.
Success.... kinda. I tried combining the broken Nexus 7 motherboard with the working Nexus 7 screen but it wouldn't fit since one is the 3G model, and the other is the Wifi only model. Next, I put everything back together on the broken N7, but this time I used the LCD ribbon cable from the good N7. Success!!! It powered up, and I can see the screen. My problem now, is that the screen is mostly unresponsive and acts like you are touching it in random spots, when you're not touching it at all. I'm taking it apart to re-seat the connections... again.
__redfox__ said:
Success.... kinda. I tried combining the broken Nexus 7 motherboard with the working Nexus 7 screen but it wouldn't fit since one is the 3G model, and the other is the Wifi only model. Next, I put everything back together on the broken N7, but this time I used the LCD ribbon cable from the good N7. Success!!! It powered up, and I can see the screen. My problem now, is that the screen is mostly unresponsive and acts like you are touching it in random spots, when you're not touching it at all. I'm taking it apart to re-seat the connections... again.
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Hey redfox thanks for taking in interest in this! You're not hijacking the thread, your posts are very helpful. Good to know I'm not the only one experiencing these issues.
I'm just a hobbyist with an interest in fixing things, although I don't have much experience with DIY fixing. I didn't have a chance to try turning the screen on under direct sunlight, but yesterday I took both my non-working Nexus 7s (the first one I mentioned in my OP, the second one just has a bad/hollowed out USB port) in to a repair shop for a free diagnosis. I'm actually a business user, my company owns the tablets but I'm responsible for maintenance/tech troubleshooting.
Please keep me posted with updates as to how your progress is going. I'll post again once I get a report from the repair shop re: my issues.
Hi,
I have been having the same problem,
I bought my wife a used Nexus 7 and it worked just fine for almost a year then all of the sudden the screen would not function
there would be lines going through it but it remain dark.
thank you for researching the matter i will try to buy the part online and see if i can get it to work now!
if i understand it correctly there is no need for a new mother board but just a new LCD ribbon cable?
godnessy said:
Hi,
I have been having the same problem,
I bought my wife a used Nexus 7 and it worked just fine for almost a year then all of the sudden the screen would not function
there would be lines going through it but it remain dark.
thank you for researching the matter i will try to buy the part online and see if i can get it to work now!
if i understand it correctly there is no need for a new mother board but just a new LCD ribbon cable?
Click to expand...
Click to collapse
I cannot guarantee that it will fix your screen, but it is possible. When I had this one out in the sun, it did the same thing. The screen was super dark, and I could see crazy lines. Hopefully a new ribbon/cable will fix your problem. They are only a few dollars on Amazon.com
godnessy said:
Hi,
I have been having the same problem,
I bought my wife a used Nexus 7 and it worked just fine for almost a year then all of the sudden the screen would not function
there would be lines going through it but it remain dark.
thank you for researching the matter i will try to buy the part online and see if i can get it to work now!
if i understand it correctly there is no need for a new mother board but just a new LCD ribbon cable?
Click to expand...
Click to collapse
__redfox__ said:
I cannot guarantee that it will fix your screen, but it is possible. When I had this one out in the sun, it did the same thing. The screen was super dark, and I could see crazy lines. Hopefully a new ribbon/cable will fix your problem. They are only a few dollars on Amazon.com
Click to expand...
Click to collapse
Hello fellow users! Quick update, I finally heard back from the repair shop.
Bad news - they tried swapping out the screen, then the battery, USB charging port, display cables, etc. etc. and nothing worked. Their diagnosis is that the tablet has a fried motherboard, and they're unable to repair and/or replace it
Good news - it cost me nothing to receive this diagnosis
Hopefully the outlook is not so grim for your respective N7s. Just wanted to post an update as to what I learned from this whole experience.
Hi guys, Reporting in.
Toke a while but i got the part AND found the stupid device!
After ALOT of fiddling, taking apart and putting back again i found out that the problem was the battery!
it looks like it was on its last leg and that caused all the strange screen stuff.
I dont have another battery to replace it so instead i hooked it up straight to a USB cable and into the socket and it works just fine
thanks for the tips and hopefully this helps someone else!
HI there,
recently had my screen replaced and basically i wont be going back there any time soon, had to argue to get the warranty (anyway!)
my phone now is completely unresponsive, no charge no boot no nothing
HOWEVER
on disassembling the phone i noticed that with a little move of the motherboard my device powers up as normal,
sometimes it may boot and die again but i guess this is due to the motherboard moving again.
So my question to you is, is there any advice you may give on how to secure the board? i have tried a thin piece of credit card to no avail yet! with one screw to secure the board i can see this being a bit of a pandoras box!
cheers, much appreciated
Hello.
I have a galaxy s5 with water damage, the screen doesnt work at all, its completly black no sign of at least a blinking once in a while on the screen, but the phone Works normally, when i turn it on u can hear the sound and vibration, also i tested with sim card and i can even receive calls, so everything is working as it should except the screen.
My question is, if i buy an lcd screen+digitizer to replace the current faulty one, will this work?I try to be sure if this will work cuz i dont want to spend on buying a new lcd screen and then see that this didnt worked.
I have already opened the phone to check the current's lcd status, which is kinda really bad from the water dmg, but the rest looks ok.
Any Info on this would be really helpful
Try Vysor it's a Chrome extension to handle your phone in your pc.
Since you are able to watch your phone screen on your pc that should give an idea about the damage and if it's worth fixing or not.
What happen anyway? I just recently bought S5 coz of water resistant feature.
You could try diagnostic software, or have in-built Samsung *#0*# to assest your hardware, but you need to connect and mirror your S5 to TV or by other means for you to see your S5 display.
Chym3ra said:
Try Vysor it's a Chrome extension to handle your phone in your pc.
Since you are able to watch your phone screen on your pc that should give an idea about the damage and if it's worth fixing or not.
Click to expand...
Click to collapse
Thx for your asnwer on this, unfortunalety this extension requires USB debugging enabled, which i dont have it enabled. Honestly i didnt knew about this extension so thank you for sharing this.
The phone just dropped into the water and stayed for 1-2 seconds before i took it out right away, but as many others got confused about this, there is a difference between water resistant and water proof, its a big mislead from samsung advertising this phone as "its able to stay in water up to 1 meter for 30 minutes". thats what confused many and they damaged their phones. On my part i didnt wanted to test it at all, it was an accident :/. But seems i might be able to make it work again with a NEW lcd, i just wanted to be sure before buying the lcd.
I was swimming with my phone, taking pictures underwater during summer and it's still fine today. And there's whole bunch of videos on YouTube prooving that as well.
Try to send it to repair if you still got warranty.
Hi everyone, basically the other day I was in a bad mood and didn't think and threw my Note 3 at the ground pretty hard. It hit the top left corner of the phone pretty hard but there are no marks or anything and my external case, the back case and the battery all came out. I got a bit of a fright and put all of the components together but now it wont turn on. I've tried charging the device but the screen wont turn on it wont power on normally. Nothing seems damaged as I pulled it apart and took out the screws and removed the motherboard. Nothing seems broken with any of the components and all the Flex cables are attached and don't appear to be damaged. I'm not sure what to do since nothing is clearly damaged and it wont turn on but the battery connector, as well as the battery etc all seem fine. I have no idea what the problem is, my only guess is that its something under the motherboard (I don't even know what that's called, if there is anything in there) or maybe some of the Flex cabling is damaged or a component is broken inside?
Any ideas or suggestions would be really helpful. Thanks.
PS. this is my first post i don't even know if you guys can help with this or this is the right site/ part of the site to help me.
Sam
Hi
I've got i9505 device. It isn't turning on anymore. This phone worked okey, but it fell many times. Display is quite shattered. But it stopped working not directly by a fall. What is strange plugging it to PC results with lack of detecion. Charging diode is not lit. I bought a new battery, but it didn't help. Any ideas? The phone was never modded in any way. It is on stock firmware
Sounds like some component inside has failed after being dropped many times.
quite obvious ;p
i thought about some software issue maybe?
also i thought about power button or usb port issue - i once changed this port like half a year ago, cause it was broken