[Q] Mytouch 4g wifi not functional after LCD replacement - myTouch 4G Q&A, Help & Troubleshooting

I just recently replaced a malfunctioning LCD and shattered digitizer for my Glacier. Before I did that, the WIFI worked just fine. No problems at all. But now, the WIFI will turn on, but won't pick up any networks at all. All my other phones pick it up just fine, as well as my laptop. I've tried three different ROMs and I have the same issue with all of them. As far as I know, there weren't any cables that connected the WIFI module to the motherboard or anything else when I took it apart and put it back together. It's just a little piece that snaps into place, right? I'm not sure what's going on with this...

Seriously? Nothing? Every time I post on here, I get ZERO response... What gives? I see everyone else's problems being solved but not mine...

Sorry, there's no help to give. Don't act like you're entitled to something. I hate people like that. If you didn't touch the WiFi module through the screen and tried different roms then it went bonkers and its toast. TF are we supposed to do about that
Sent from my HTC Glacier using xda app-developers app

If you're gonna post on here just to be a douche, you might as well not post at all. It's doing nobody any good.

All drama aside, he is right nothing to be done really. I guess you could open it back up again and risk breaking something more important than the wifi. Something may be put back in wrong or may have got ESD damange. Truth is unless you're just using this phone as a toy/dev/learning device and don't care if it breaks it is not worth the risk to open it back up.

Trying to fix my external speaker - I mess up working wi-fi. In addition, the case crack and camera button is not working. Should take it to repair shop. Too late now. It would be too expensive to fix it. You my still be lucky and shop will fix for few bucks. Lesson learn - do not mess with something that you do not understand( for me).

coax cable issue
there's 3 little coax cables - I've been told the white coax is the wifi but the black one fixed it so maybe they are all involved. In the process of getting to the LCD you went through these 3 cables. In most cases you wouldn't have disconnected them but certainly by accident it will happen. I put mine on 3 times before they stayed. There's quite positive click when connected but even then it may come loose while assembling the rest of the phone. I just finished swapping out my mother board and as perfectly as I could reassemble the phone I apparently lost one of the coax connections = no wifi. Went back in and this time the black cable somehow got caught under the camera board instead of on top and connected. Easy to see why this was missed because it looked connected.. well looked like it belonged where it was (wrong)
Anyway that's my wifi fix story - hope it helps someone

Related

replacing G1 speaker

Hey guys,
The earpiece speaker on my G1 has developed a fault, the fault being it doesn't appear to work, how easy is it to source a replacement for it and how easy is the repair itself? is there any guides as to how to do it around? (i looked but i couldn't find anything).
I've tried flashing the rom and doing a hard reset but its still faulty.
The loud speakers working fine though so atm all my calls have to be done on the handsfree kit or via loudspeaker which can get annoying.
any help is much appreciated
regards
Streather
Are you using a ROM where sound works?
What ROM are you using?
Tried it with cynagen and the stock tmob one, same results.
Same problem
I'm using CyanogenMod 4.2.5. I dropped the phone about a foot (it fell out of my shirt pocket as I was tying my shoe!), and the earpiece stopped working. Everything else (speaker phone, etc.) works fine.
I've seen a number of similar cases in other forums, so I'm thinking that this is a weak point. I'll attempt disassembly and see if the speaker contacts got moved or something simple. Fortunately, replacement receivers/earpiece/speakers are available over the net.
Meanwhile, I'd love to learn of others' experience with this. The tech manual makes it look like you have to just about completely disassemble the phone to get at the earpiece, even though you can easily access 3 screws on the back of the lcd. Is there a shorter route to the receiver than a complete disassembly?
[update] I found some good info (including a technical manual) by Googling "g1 phone disassembly". And searching for "g1 speaker" on eBay gave some decent looking results.
[update 2] I disassembled my phone, took out the receiver, cleaned its contacts, replaced it, and and reassembled everything. That was a pretty serious chore, and it demonstrated that a nearly complete disassembly is required to access the receiver (yes, including all the stuff at the opposite end of the phone). I don't know how to test the receiver without being in cell range, which my house is not. But at least nearly everything else still works, except the camera--I need to tear back into the phone and make sure I fully seated the FPC. I think finding a replacement receiver will be a challenge--most of what turned up on eBay is actually the main speaker on the back of the phone, and I have yet to find a vendor that sells receivers.
Sadly, you will almost have to tear down the whole unit to get to it. It's not extremly diffucult, but you will need to be steady and gentle. Good luck.
Success!
I haven't seen many report back after tearing apart their phones to address issues with a bad receiver, so here goes. My simple-minded approach of opening it up, cleaning the receiver contacts with a pencil eraser, and ensuring good alignment before reassembling WORKED. I did not have to buy a new receiver.
Now if I can just get my camera to work again (I think I didn't get the cable well seated).
[update]: camera works! Seating that FPC took some nimble fingers--I got it on the 3rd attempt. I hope this proves useful to others who, like me, do not have the warranty option for various reasons.
I dropped my phone once, by accident, same thing happened. The speaker you use to put your ear up to when making a phone call doesn't work, but the speaker phone speaker works as does a bluetooth headset. Called HTC lied said that it just stopped working out of no where, they said its covered under warranty. Luckily the phone is under warranty until March and will be replaced.
I ran into the same problem. I was having intermittent problems with the earpiece. Yesterday I was able to take out the battery and put it in and it started working again. Today that didn't help either. I saw this thread and I thought that I'd try blowing really hard on the earpiece to see if that helps. It seems to be working again! I hope it continues to work.
dirtprof said:
Now if I can just get my camera to work again (I think I didn't get the cable well seated).
[update]: camera works! Seating that FPC took some nimble fingers--I got it on the 3rd attempt. I hope this proves useful to others who, like me, do not have the warranty option for various reasons.
Click to expand...
Click to collapse
Can you post details on how to do this?
My camera stopped working too.
I personally found it easier when disassembling the phone to carefully lift the entire camera and IMEI sticker as a whole unit and remove it as part of the motherboard. That way you dont need to mess with that hard to reach connector. So from where you are at, lift the board back out, reattach the camera assembly, and reassemble as a unit. I think you will find it is MUCH easier
Seat the camera FPC fully
RueTheDay said:
Can you post details on how to do this?
My camera stopped working too.
Click to expand...
Click to collapse
I had to lift the motherboard up and away from the hook that held it down in order for the FPC clip to open fully. Then I inserted the FPC *fully* before closing the FPC clip (my failures resulted from not being able to fully seat the FPC because the FPC clip could not fully open as long as the motherboard was in place). Then the trick was to get the motherboard back under its hook without accidentally pulling the FPC back out again. What I did was to press it gently straight down, using my fingernail to ease it past the hook.
Good luck!
bump...
Yeah looks like all there is on Ebay for speakers is the back one, the one for the receiver earpiece looks like it has two wire connections at each end while the one for the back speaker has them right next to eachother.
So if anybody had this problem, it is very odd and might have to do with the spring connection maybe.
Still I had this problem before and it fixed itself randomly, but this problem came out of nowhere because 12 hours earlier I had dropped my phone on its back and it continued to work fine. Than on my way driving randomly it would not work and I barely set it down in my car.
Once again hopefully somebody has found a part for this because ebay only has back speaker parts.
Best bet is to blow on it and massage it or tap it until it works, damn this sucks because it is basically the very last step to get to after dissambling your phone. So much work to get to such a common problem for many people.
I almost wanted to try to shortcut it and undo the two screws on the screen section to move it around to make connection. Now I am the deusche bag with the bluetooth in his ear all the time.
I almost wanted to try to shortcut it and undo the two screws on the screen section to move it around to make connection.
Click to expand...
Click to collapse
That was what I tried at first. It didn't gain me access to the speaker.
Taking the phone apart is a pain. You really need nimble fingers and faith that you're not breaking the phone when you're levering apart the *very* tightly held together plastic parts. HTC did not make this thing with servicing it in mind. Just be sure to have the right tools (including light and a good magnifying glass if you're over 40) and patience.
Removing the 3 screws that are accessible without disassembling the entire phone will get you in there if you are VERY careful. Unfortunately the one I tried this on did not work differently with a known-good speaker in it. You can delicately dig out the old speaker with a knife (Xacto) and drop the new one in. Takes patients, but not nearly as hard as disassembling the entire phone (been there, done that x10)
I have at least one spare speaker. Maybe more, gotta check my stockpile!
Hey,
My phone got dropped in a rum & coke on Saturday, so i soaked it in 90% rubbing alcohol and let it dry in a rice bath. after 4 days in the rice, it looked dry, so i turned it on. IT WORKS! The screen looks a little trippy (the pattern is even changing throughout the day) but the touch and accelerometer work great. The only real problem is the speakers sound like crap. the receiver is so quiet that it sound like they're wispering, and the back speaker is all crackely.
I found a replacement receiver speaker, but as i haven't taken it apart yet, i was hoping one of you could tell me if this looks correct.
http://www.tvc-mall.com/details/Replacement-Speaker-Earpiece-Receiver-for-HTC-G1-HTCO-G1/photos.htm
If so, i guess i'll order both speakers and attempt to replace them.
That looks about right. Bear in mind, of course, that those pictures are greatly magnified. If you haven't taken apart a G1 yet, you're in for a bit of nerve-wracking prying. Just go slowly and be patient. Getting all the way to the receiver speaker means taking the phone most of the way apart.
Thanks!
I have taken apart a phone before, the Dash (excalibur). I had to replace the screen, it involved removing almost every component.
I think i'll go ahead and order it, and cross my fingers. right now the phone isn't much more then a tiny computer, since i can't hear anyone and i don't have a Bluetooth.

Microphone stopped working

Anyone else had this problem yet? Had mine since Oct. 4th
I didn't try to do a data wipe. Just took it to T-mobile for a replacement. Didn't want it to start working again because I had got a scratch on my phone anyways and it was a good opportunity to get a replacement.
Me too. When I use my headphone, people on the other line can't hear me. This happen more than once. I try to do a hard reset but it still don't work.... anyone have any solution.
tino888 said:
Me too. When I use my headphone, people on the other line can't hear me. This happen more than once. I try to do a hard reset but it still don't work.... anyone have any solution.
Click to expand...
Click to collapse
My issue was the microphone on the phone. Did you not buy from T-mobile or other authorized outlet? Your phone should be within warranty.
Another thing to try would be a Data wipe/factory reset.
Another thing I noticed is that when I charge my phone there is an LED in the earpiece. My last G2's LED must have been defective.
Hi, what happen if you buy the phone from craiglist, how can I return ?
tino888 said:
Hi, what happen if you buy the phone from craiglist, how can I return ?
Click to expand...
Click to collapse
Contact HTC about warranty service I guess. I don't understand why someone would sell the phone on craigslist when it is within the 14 day return policy for tmobile where you can get a full refund unless maybe it was stolen.
You can contact HTC here: http://www.htc.com/europe/CA_Hotline.aspx?region=NorthAmerica
I'm just speculating here, but it's based on past experience with flexible connectors like the one used to bridge the display portion to the body. I'm surprised to see the possible defect occurring so early in life of this handset, but the fact that the ribbon is forced to bend back 180 with a radius of less than 1mm when the display is open puts a LOT of stress on the thin conductors of the ribbon. The problem might have been precluded by HTC using carbon traces rather than typical metallic copper on this critical component. See for yourself by looking at your phone edgewise next time you flip it open. If we're lucky and enough handsets fail like this HTC MIGHT do something of a product recall. Incidentally, has anyone with a dead mic also experienced random screen garbage or erratic touch response? Again I point to the same design flaw.
Here's to hoping I'm dead wrong guys!
This problem just happened to me. With no apparent reason, the internal speaker stopped working. People can hear me, but I can´t hear anything.
Funny thing tho, if I activate the external speaker, it works. The problem is the internal speaker only.
Is it a known problem like the shoddy usb connector on some kaisers ?
tino888 said:
Hi, what happen if you buy the phone from craiglist, how can I return ?
Click to expand...
Click to collapse
dont say anything to tmobile about where you bought it from. there is a one year warranty the original date of purchase. at least there was with the motorola cliq that i got off craigslist. returned it for a fab'd one without scratches gonna do it one more time right before the year is up haha
My G2's mic has also stopped working, been looking around different websites for parts, but I can't seem to find it, u guys know anyone?
If I use it with the headphones/mic, it works fine, people hear me and all. If not, people can't hear me.
FWIW, I had this exact problem shortly before Christmas. the mic started by cutting out sometimes, then failing altogether. Using an external mic worked fine so it wasn't software, just the physical connection to the built in mic. I'm pretty sure that sivalley is right in his speculation that the issue is the flexible ribbon connector.
Fortunately for me my phone was under warranty and HTC arranged to pick it up etc.
Weirdly the day before they were due to pick it up, the whole screen stopped working. I could power up and feel the vibration etc, but the screen never came on. Again I think the common factor was the flexible ribbon.
When HTC repaired it it came with a long list of things they'd replaced to get it working again, so it may not be as simple as just replacing a ribbon connector.
I have no idea whether it's possible to source the parts, but it might be worth finding out how much HTC would charge to fix it if it's not under warranty (could still be a good deal)

[Q] Water damage

A few months back my Legend went through a cycle in the washing machine. Afterwards I did all the recommended things (take everything apart, leave it in the sun for a day or two, keep it in a jar of water absorbent silica in the evening). Anyway, after three or four days of that, I put it back together again and my battery was dead. Tested it with someone else's battery, and everything worked perfectly, I even made a call with it.
I then waited about 3 months for a new battery (it got stuck at customs) which I finally go this week. Thing is, I now have 0 connectivity with the phone no matter what I do. I always have 0 bars, I can't connect to wireless networks (even though I pick them up perfectly), and I can't get the GPS to turn on at all. Everything else works fine (including the FM radio), but there's no connectivity.
I was hoping it might be a software issue of some strange sort, since the wireless picks up well but just says "connecting--disconnected" when I try to connect. A hard reset did nothing to the phone though.
Is there anything else for me to try? I'm running pretty thin on ideas at the moment. Would replacing the back cover fix any of the connectivity issues? Also, is it still possible for it to be a software problem, and should I maybe try to install a custom rom on it?
Any advice at the moment would be much appreciated. Thanks!
EDIT: I just realised that I had made things worse with my reset. Now I have no file browser with which to sideload apps and no internet connectivity. EDIT2: Managed to fix the file manager problem with ADB. Now just the actual problem again
The GSM antenna is in the bottom part that covers the battery compartment - I'd say you have some oxide on those two contacts.
Take a small screwdriver (or a needle) and gently scrub those pins on your phone.
As for the two on the cover, you'll notice those two parts come apart, so I'd take the inner part and gently brush the two contacts with a piece of cloth and a toothpaste - it's a good thing to gently brush something.
If that fails and you're sure you plugged all inside as it was...it could be another problem...
You may also try bending the two contact in the phone out - these act like a spring, but be gentle about it
P.S.: Is your Legend at least clean now?
EDIT: Now that I think about it, you can try the phone with piece of wire:
cut a wire of : speed of light/frequency in Hz and connect it to the two pins inside the phone
For USA:
299 792 458 m/s divided 1 900 000 000 Hz = 0,15778 m
Thanks Dr.Romca.
I'm trying the clearning out for now. when you say the battery cover comes apart, are you talking about the piece of plastic inside the rubber? There seems to be an additional piece of plastic inside the rubber which might come loose, but I'm not quite sure how to pry it out without breaking it. Any tips on how to do this?
I'll give the piece of wire a skip until the very end
It's not glued or anything, just push the rubber part in the middle and try to click it out...
Dr.Romca said:
It's not glued or anything, just push the rubber part in the middle and try to click it out...
Click to expand...
Click to collapse
Ahh ok, I wasn't sure what to expect on the other side. Didn't want to jam a screwdriver in between the plastic and rubber and hurt some electronic component. Managed to get it loose though, and gave it a thorough but gentle rub down.
EDIT: Nope, still no service on it. I still find it strange that it doesn't want to connect to the GPS or the wireless either. As far as I know, those shouldn't be affected by an antenna issue right?
That's strange... WiFi and GPS antenna is in the other rubber part....
It seems there might be something wrong with the PCB...
I'm at a loss here...
Damn I have connectivity issues here...
The strange thing is it worked once after the washing...
If you have the courage for it, you can also try this:
Take the phone apart, I mean really apart, if you can unmount the display/touchscreen. Then take the PCB - mainboard, try to put a sticker over a microphone and the repro, then take a toothbrust and a detergent and brush the PCB - make sure you clean all, there will probably be some metal plates that look they can be unmounted, so try to unmount them and clean beneath them.
After this take the PCB and put it in the hot-air oven (if you have one - NOT a Microwave! ) 40 - 50 °C for like an hour should do the trick...
You can also use alcohol to clean the PCB, but since it was water that caused this, I'm gonna presume you'll have more luck dissolving with water again...
Anyway, that's what I'd do, but I'm and engineer, so if you're not sure, just take the phone to service
Hello,
The WiFi and gsm signal are at seperate places on your phone, so you either got a major problem with the hardware, or the ROM just went nuts. I suggest you flash a new ROM before you take the phone apart, cause it might get damaged irriversably..
Goodluck, keep us updated!
Sent from my HTC Legend using XDA App
Thanks for the continuing advice. You're right about the engineer thing though; since I'm not an engineer I'll leave taking the phone apart until the very end.
I've never flashed a ROM before, but I'm sure I'll be able to figure that out. What initially made me think that the ROM might have gone crazy is the fact that the wireless actually picks up networks. The further I get from a network, the worse the signal, and the closer I get the better, so the wireless signal is working properly. It just seems to have a problem connecting, which seems like a software issue rather than a hardware issue.
If that fails, I'll send it to HTC and see if they can do a repair for me. I already sent it to them for a check-up and a new battery directly after I had it dried out. I included explicit instructions that it got water damaged, that I was not looking for a warranty repair, and I would just like them to make sure everything is working and bill me for the repairs and a battery. Two weeks later I get the phone back with a note saying that they noticed some water damage, and they don't do warranty repairs on water damaged phones Anyway, I'll try them again.
If HTC fail to do anything again, I'll try my luck with a full teardown. Still, ROM flash first.
EDIT: Ok, so I followed this (http://forum.xda-developers.com/showthread.php?t=894465) post up until the end of downgrading your rom, and the problems are exactly the same. From my understanding, this would have installed a clean rom onto the phone, so any software issues should have been cleared up. I'll still try and install a custom ROM, just because I've always wanted to and just maybe something will work, but the software problem seems an unlikely explanation now.
This is getting very strange now. Using my newfound "Wi-Fi" Hotspot powers, I can actually create a Wi-Fi hotspot that my computer successfully connects to. Once again, if the hardware was broken I don't see how this could work. I still can't connect from my phone to any Wi-Fi network though.
As I mention (for a completely unrelated reason) earlier, I sent the phone in to HTC. This might be a very dumb question, but is it at all possible that the ROM on my phone works at a different wavelength/frequency than what is used by carriers in South Africa (where I'm from)? I'm thinking maybe HTC did a stock reset or something which changed it, because I never tested my phone after getting it back from them. That would also explain why my phone doesn't have reception with the current ROM. Just note that I have no idea how these things work, it's a complete shot in the dark
EDIT: My GPS also works now, or at least the gps indicator flashes when it should. Since I don't have any kind of internet access, I have no way of knowing if the GPS works, but in the past it never flashed.
I'm currently thinking of using my computer's wireless to connect to my phone, and then bridging that connection with my UTP connection to connect to the internet. I have no idea if this will work or what exactly if it will get me closer to a real solution, but at least having internet access on my phone will make things a bit easier. Will let you know how it goes.
So have you succesfully flashed a different ROM?I'm not sure what type of rom should you have but WWE by it's definition should work...So if you have rooted, try any WWE ROM...
Dr.Romca said:
So have you succesfully flashed a different ROM?I'm not sure what type of rom should you have but WWE by it's definition should work...So if you have rooted, try any WWE ROM...
Click to expand...
Click to collapse
I first downgraded it to 1.31, and now it's on BlaYo's B0.2.
can you check what radio you are using?
You may want to update it!
It's in settings / about phone / software / baseband version
My is 47.51.32.17U7.13.35.05
Not sure if there's a special version for SA, but here is a radio update only:
http://forum.xda-developers.com/showthread.php?t=706435
Sorry for the late reply. Real life caught up for a day or two.
My baseband version was 47.26.35.04u_7.05.35.26L. I updated it with the radio update you posted, and it's still not working. As far as I know, South Africa can use any American phone except those on Sprint, if that helps at all.
Also, I was away from home for the last week, and now that I'm back home my phone connects perfectly to the wi-fi here. I am certain that I did not make any mistake in connecting to the other networks I tried, as I tested the settings on multiple computers and entered the passwords multiple times, but the wi-fi seems to have been a red herring. So the only problem left now is normal phone connectivity.
I'm sorry to hear that...I'm not sure what the L means at the end...but about the wifi thing, it has been mentioned here that different locations use different WiFi channels...so at this point it's almost sure you have a driver/settings mismatch somewhere...
but I don't know much about that...sorry..

[Q] WIFI problems after screen replacement

Hello Guys,
I just got my HD2 from repare, had to change the screen since it became unresponsive.
After I got it back, installed both WP7 and Anrdoid on it, I found out that the phone is not detecting any wifi networks. I tried in both WP7 and Android, and both of them do not detect any wifi networks. So it looks like when they changed the screen, they messed up WIFI connectivity. I'm guessing they might have forgotten to connect one of the connectors.
I am planning to take it back to them, but I was wondering if any of you knows which connector is for the WIFI, and if its easily visible once I take the back cover off, since I already done that before.
Thanks in advance
Hi dude,
if a connection is a problem and you even going to find it don't do it yourself.
it's a pretty small and gentle stuff, so you must know what you doing and how to connect them. Obviously you will need some serious tools.
my guess if you had all that - you already been doing this and not asking here.
so advice - not touching anything, not making it worse.
Best case: the connector came loose (which is not all that uncommon). It's the connector on the black wire on the top right side of the main board.
Worst case, they broke off a contact (which is also quite common).
Either way, don't try to repair it yourself but bring it back to the repair shop. If they accidentally broke off a contact then that requires a professional repair.
Thanks guys.
After some tests, I found out that the phone does detect wifi networks, but have extremely bad reception. I have to be very close to the wifi router for it to detect the network.
Any idea what might be causing this?
wessamzeidan said:
Thanks guys.
Any idea what might be causing this?
Click to expand...
Click to collapse
Like I said, either a loose connector or a contact has broken off. That will give you about 1 bar of reception while sitting next to your router...

N7 screen issue + not recognized by PC

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?
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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!

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