Database Users

Front camera and earpiece not working

Hi all... This is my first post and and just want to say what a great community... Thanks...
Now for my problem. I have spent a lot of time reading posts and trying to solve my problems and haven't found anything that relates to what I am experiencing so hopefully someone might be able to help me out. It's a fairly long story but I'll try to give you the quick version.
I bought a new Softbank X01HT from an ebay seller. The phone arrived and when I tried use it all I would get was a bright white screen. I tried emailing the seller and got no response. (They sell several phones every day so I don't think he deliberately ripped me off, I just got a dud and the seller is too lazy to reply to emails).
I opened up the phone and investigated, my brother has an I-Mate branded version of the hermes so we swapped parts around and decided that the LCD/front ribbon cable was causing my problem. I ordered a new cable from cnn.cn. When it arrived I fitted it and thankfully the phone came to life. I did all the usual mods then, updated the ROM etc etc.
When I got it all back together the front earpiece was working but only very very quietly, I could hardly hear the person on the other end. The speakerphone works fine though. I tried hard reseting and even flashing a different ROM but this didn't help. So I opened the phone up again, thinking that I hadn't seated the earpiece properly. This time when I started it up again I got absolutely nothing from the earpiece. I also found that the front camera just doesn't work. I tried my swapping back the original ribbon cable, although I couldn't see what was going on I was still able to get someone to video call me, answer the call and still found the camera wasn't working, doing this I couldn't test the earpiece though.
I put the camera in my brothers hermes and it works just fine. We have swapped all parts around including main boards and they all interchange fine. I only strike a problem when I am using my camera with my main board. As for the earpiece we couldn't succesfully make it work in my brothers phone, but also couldn't make his earpiece work in my phone.
I have read the posts about the contacts on the earpiece, but trying this hasn't solved my problem. I guess there is a chance that the new ribbon cable I got is also faulty, but to have the same problem from two ribbon cables seems fairly unlikely. The speakerphone works fine and so does my bluetooth headset so I am fairly confident that it is not a software issue. I have used Black Satin ROM and now I have installed Schaps 3.6 (both nice ROMs btw)
Thanks to anyone who has spent the time to read this post, hopefully someone may be able to shed some light on it for me. I got the phone a fortnight ago and still haven't been able to use it properly and it's starting to drive me nuts.....
Thanks
Craig

No charge light

Everything was absolutely fine earlier this afternoon (then the phone got a bit hot while riding in my car) and now, It is not being recognized by active sync or any power sources. The amber light doesn't light. It has happened before but then "fixed" itself. Anyone have any experience with this? This has happened both with the original ROM and the AP rom I am running, so I don't know that it is a software based problem. Any ideas? (Yes, I have it turned off, I have pulled the battery out as well, the USB feels no different than it did before).
-Will

Are you under warranty? Since this sounds like a recurring hardware issue I'd get it replaced. I've never had this issue, even when I left it on the dash of my car for an hour this summer, directly in the sun (by accident). The screen protector bubbled up and it was almost too hot to hold, but it started right up and hasn't had any problems.
Have you tried a hard reset?

Definitely no warranty (this is one that I did the screen replacement on and worked flawlessly for over a week with no problems. It did this before the screen was broken as well.) I noticed that it does feel a bit loose (the USB) so I am opening it up and going to check the solders. I know I'm crazy for doing this but it's out of warranty and it is already broken, so.... why not? And yes, I've done a hard reset and it still is giving me fits.
-Will

well....
All solder joints seem good, no inordinate resistance, nothing out of the ordinary... the problem is further up the stream I am guessing.... so right now, it looks like I'm down my Advantage. May just end up selling it off for parts and getting a Diamond or some such for a replacement (can't afford another X75xx series phone right now...)... Brand new screen on it, and everything worked fine for a week but I think something in my car fried it... because my S621 died the same way recently... and my Asus PND fried as well....and all of them had one common thread. Being plugged in to my car for recharging purposes most of the time.
-Will

hooty said:
All solder joints seem good, no inordinate resistance, nothing out of the ordinary... the problem is further up the stream I am guessing.... so right now, it looks like I'm down my Advantage. May just end up selling it off for parts and getting a Diamond or some such for a replacement (can't afford another X75xx series phone right now...)... Brand new screen on it, and everything worked fine for a week but I think something in my car fried it... because my S621 died the same way recently... and my Asus PND fried as well....and all of them had one common thread. Being plugged in to my car for recharging purposes most of the time.
-Will
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I sent you a PM. interested in it for parts (I also posted a thread about looking for parts)

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.
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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 ?
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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)

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?
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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!

Front camera not working

I have 2 tegra notes (vegas) - second one's my son's. One rooted, one not. One on Lollipop, one on kitkat. One chock full of crappy games, one not. The front camera doesn't work (at all) on either of them - probably never has, but it's only recently that I've tried them (for skype). Tried a few different apps, tried after factory reset, before and after lollipop upgrade - all they do is either show a pixellated screen or crash whichever camera app I'm trying.
Wondered if anyone had the same issue?
One (probably irrelevant) thing the tablets have in common - they've both had the usb port replaced under warranty.
I know the front cameras are rubbish, but it would be nice if I could get them to work. TIA for any suggestions.

Just to finish this...
Both tablets have been previously repaired by Curry's / PC world - the usual charging port fault.
I took my son's vega apart last week as he's comprehensively broken the port again - played with the ribbon cable to the front camera and it came to life after a reboot.