[Q] Screen stops working intermittently, seems to be hardware related, help? - Nexus 5 Q&A, Help & Troubleshooting

So I've been having a ton of issues with my phone lately, to the point I can't use it anymore. I'll list them in case they may show what the problem is. First, the charging port went out. I swapped out for a new flex cable on ebay and all was well again. Next the speaker stopped working unless I would squeeze the bottom of the phone, and then stopped working completely (Not sure if this was the speaker itself or if it was making poor contact with the new flex cable.).
Up next, and the worst problem of all, is the screen stopped working intermittently. I seemed to be able to get it working better when I would squeeze the phone, which seemed strange to me. This kept happening until it stopped working altogether!
So, thinking it was the flex cable, I just swapped it for another new one from a different seller, and it still isn't working. If I reboot the phone the screen works perfectly fine unless I put light pressure on the back of the above the "s" in nexus, then the screen shuts off and won't come back on again until I restart the phone again. As soon as I reboot the phone the screen works great again until I tap that spot.
I'm a bit at a loss to what I should be looking for, or what I need to replace? Is there some sort of short? Is a connection poorly made? It's a brand new flex cable and the old one seemed to be doing the same, and I've double checked the connections and they seem to be fine.
If you have any ideas, I'm all ears, just about to tear apart the phone to check where it might be making shorts around that area! Thanks everyone!

Seemed to be an issue with the flex cable connecter to the motherboard. When I added pressure to the connector the screen would work, as I let off pressure the screen quit. I ended up adding a few layers of electrical tape to the back of the connector so when I put the backplate housing and cover back on it would add some pressure. Seems to be working great now (knock on wood).

DallasW said:
Seemed to be an issue with the flex cable connecter to the motherboard. When I added pressure to the connector the screen would work, as I let off pressure the screen quit. I ended up adding a few layers of electrical tape to the back of the connector so when I put the backplate housing and cover back on it would add some pressure. Seems to be working great now (knock on wood).
Click to expand...
Click to collapse
Thats a common experience you had. The connection between the USB cable and the motherboard for some reason can go bad. I suspect overheating may be the primary cause. The careful placement of double stick electrica tape appears to help fix this problem. I had to do it myself. The speaker not working can be caused by poor connection to the USB flex cable. There is an excellent youtube by "LE55ONS" on the disassembly/assembley which shows everything in great detail. It's worth a look.
Glad you got everything working
Blacksmith5 in Plano TX

Related

[Q] Problem with Screen?

I've got a transformer, and the screen doesn't appear to be working. My boyfriend bought it the first day it came out, dropped it, was able to play with it a bit. The battery died and he set it to charge, and after that the screen wouldn't work. The screen itself is fine, it just isn't displaying anything (He can't take it back for a warranty repair, because he threw out the receipt, that's why he threw it to me to look at).
When you plug it into a computer, the computer recognizes it and you can browse the files on it. When you use the hdmi cable to plug it into the tv you can see the screen of the tablet on the tv and you can use it, so it's not anything wrong with inside workings of the tablet itself. I took it apart and everything looked alright on the inside to me, nothing rattling around, and all the connections appeared to be connected tightly. I was able to see the slide to unlock symbol on the screen by shining a flash light directly on it while the unit was on, but it was really faint and hard to see.
Does anyone know what the problem could be? In a normal laptop I would say it's the inverter, but I'm not really sure if tablets use technology like that. I'm a bit at a loss here for what the problem could be and how to fix it.
Pretty close i would say its the digitizer though you will need to rma it to get it fixed
Screens break in many different ways, just because there is no crack or leaking LCD look to it doesn't mean its fine
I would place my bets on the screen being damaged, although the board could have cracked or a solder joint could have come lose or a tiny tear in the ribbon cable
Screen is the most fragile though
I had the same problem, and after opening the TF everything looked fine too. It was not. What I did was to unplug all the cables and plug them all again. Problem solved.
Probably the screen cable got a little loose after the drop.
Good luck.

Weird fault with Note 10.1. Help!

Hi guys, newbie here, and im in desperate need of your help!
So I decided to buy an Note 10.1 and yesterday I received it. Straight away (after turning on) I noticed this rather irritating noise (like a notification sound but not one that is the ringtones options on the tablet) that the tablet made when I held it with one hand well, at first I thought it was a motion gesture since whenever I hold it with one hand (the right hand) it switches to the previous app if your in an app, or previous Web page when surfing the net. So I searched the options 100 times, and nothing to toggle off.
Anyway it bugged me more and more and I couldn't figure it out, then by chance i just pushed slightly on the back of the tablet and the notification noise goes off. Push again, it happens again. I decided that it could be a loose connection being made and remade every time I decompress the right side back panel (I can play it like a piano). So I took the back panel off (a pain in the ****) and noticed a ribbon cable that runs directly where I push the back panel (the S pen sensor cable). It was plugged in correctly, but wasn't taped to the battery like the 2 fatter ribbon cables.
So, I taped it down thinking that me pushing the back panel was moving it and creating a loose connection. I thought I had solved it. Booted it back up, no sound!!!!! Reinstalled the back panel, booted again and BOOM, the sound returns.......
Gutted.
Not sure what to do next, it definitely sounds as if something is disconnecting and reconnecting like a USB on a PC, im getting the sound but no notification or error. I have no idea why this would make an app switch to the previous app or webpage when on net.
Any help would be much appreciated.
Well, it seems I have solved the issue. Since this is a new account, I can't post youtube videos. So I'll leave those out for the time being.
Firstly, heres a video showing the fault. As you can see, I've narrowed it down to the docking station/charger connector.
The ribbon cable was seemingly depressed causing it to disconnect briefly before reconnecting when released. Probably the down side of having a flimsy plastic case.
Solve the issue I removed the ribbon cable and taped a small amount of foam right at the mouth of the connector, making the whole connection sturdier and harder to depress with the cover on, which can be seen here.
Hopefully this helps anyone who finds themselves with a similar issue.
joey8 said:
Well, it seems I have solved the issue. Since this is a new account, I can't post youtube videos. So I'll leave those out for the time being.
Firstly, heres a video showing the fault. As you can see, I've narrowed it down to the docking station/charger connector.
The ribbon cable was seemingly depressed causing it to disconnect briefly before reconnecting when released. Probably the down side of having a flimsy plastic case.
Solve the issue I removed the ribbon cable and taped a small amount of foam right at the mouth of the connector, making the whole connection sturdier and harder to depress with the cover on, which can be seen here.
Hopefully this helps anyone who finds themselves with a similar issue.
Click to expand...
Click to collapse
that woulda went straight back to the store
Yep, if the problem isn't fixed there's no way it'll get fixed under warranty now...
If the device is less than a week old, in Oz, the shop is supposed to replace the device immediately. This doesn't mean they won't try the old "It'll take 2 weeks to fix" and "It has to be sent back for repairs" schtick....
shaun298 said:
that woulda went straight back to the store
Click to expand...
Click to collapse
I got it from Ebay, although it was listed as new/unused.

[Q] Help screen not responding

Hey guys i hated my tf300 untill i put a custom ROM(hydro) on it.I have loved it ever since...unfortunately i dropped it and now the screen just doesnt respond anymore..screen still looks perfect no crack or scratch..i have tried full reset and everything i can....should i get i new digitizer??
will that fix it please help..
rchremi said:
Hey guys i hated my tf300 untill i put a custom ROM(hydro) on it.I have loved it ever since...unfortunately i dropped it and now the screen just doesnt respond anymore..screen still looks perfect no crack or scratch..i have tried full reset and everything i can....should i get i new digitizer??
will that fix it please help..
Click to expand...
Click to collapse
Cracks are not always visible. But if they're not there, I'd suggest you open the back case and try to reseat the ribbon cables at the touchscreen PCB. While at it, check the flat silver cable connecting that board to the mainboard also. Make sure nothing is jarred loose by the drop.
graphdarnell said:
Cracks are not always visible. But if they're not there, I'd suggest you open the back case and try to reseat the ribbon cables at the touchscreen PCB. While at it, check the flat silver cable connecting that board to the mainboard also. Make sure nothing is jarred loose by the drop.
Click to expand...
Click to collapse
thanx for responding...i did exactly what you said ..i disconnected both cables (silver and brown) and put them back..more than half of the screen started working, the other part was just dead and those parts didnt work even when i tilted the screen.. like 5 minutes later the entire screen is dead again......do you think its the digitizer?
rchremi said:
thanx for responding...i did exactly what you said ..i disconnected both cables (silver and brown) and put them back..more than half of the screen started working, the other part was just dead and those parts didnt work even when i tilted the screen.. like 5 minutes later the entire screen is dead again......do you think its the digitizer?
Click to expand...
Click to collapse
Sorry for the late reply. I've run into this problem before. When you have a digitizer that works for a few minutes then stops as the tab warms up, (1) more likely than not, there's a crack somewhere or a tear on the ribbons, visible or not, or (2) the new screen boycotting the old firmware. No new screen points to faulty hardware. However, it doesn't hurt to eliminate possible software causes.
The best test I can think of at this point would be to first check the physical connections again (check the connectors and ribbon ends under a magnifying glass, make sure they aren't damaged, bent or stripped), then re-flash the firmware following instructions in another thread, then turn on "show touches" in settings. If you still see "ghost touches" after a few minutes, the digitizer is likely ass-kicked by the drop.
I've had a digitizer on a TF act "leisurely" because of a crack across the width of the bordering black strip that couldn't be detected with the naked eye because it severed the circuit on just the underside. The surface was totally smooth. As the crack spread, it became obvious.
If I had access to your glass, I could've tested for you. Too bad.

[Q] NFC/Wireless Charging not working

On my Nexus 5 the wireless charging and NFC suddenly stopped working..
Everthing worked properly until yesterday but suddenly my NFC tags have not been recognized and i just tried my wireless charging pad and it is also not working..
I expect a hardware problem because all the nfc-based apps are working if nfc is turned on and aren't working if nfc is turned off.. Is it a problem with the NFC/wireless charging pad or with the pcb? I guess i have to replace one of the parts but which - is there any way to find out which one? When i lay it onto the wireless charger the indication led of the charger doesn't change the color and also doesn't seem to recognize the phone, so i guess it's the charging pad which is located in the backcover?
Everything else is working properly..
Is there anything i can do about it or do i have to change any component?
Back cover, I'm pointing at you ...
matthiaswtf6 said:
On my Nexus 5 the wireless charging and NFC suddenly stopped working..
Everthing worked properly until yesterday but suddenly my NFC tags have not been recognized and i just tried my wireless charging pad and it is also not working..
I expect a hardware problem because all the nfc-based apps are working if nfc is turned on and aren't working if nfc is turned off.. Is it a problem with the NFC/wireless charging pad or with the pcb? I guess i have to replace one of the parts but which - is there any way to find out which one? When i lay it onto the wireless charger the indication led of the charger doesn't change the color and also doesn't seem to recognize the phone, so i guess it's the charging pad which is located in the backcover?
Everything else is working properly..
Is there anything i can do about it or do i have to change any component?
Click to expand...
Click to collapse
My Nexus 5 has developed the same issue with both wireless charging and NFC. Previously I've had no issue with Qi chargers or NFC, now both have stopped working.
If I gently press the back cover of the phone, in the centre just under the camera it will often work again, sometimes only for a short time before failing again.
Have a look at the iFixit teardown, you can see how the back cover housing the antenna interfaces to the logic boards via a number of contacts. I believe that there is a slight flex in the back cover that causes this contact to become poor, causing NFC and wireless charging to fail.
I have the white version of the phone, wondering it the different types of plastic used on the different color version of the Nexus 5 plays a role in the rigidity of the rear cover.
Curious if anyone else experiences the "fix" of pressing the rear cover and which color N5 you have.
I had the same problem, which lead me to this thread. Based on SunburntChicken's post, I started pressing the back of the phone around the camera. Right in the middle of the phone at about the camera level, there is some give. When I pressed a bit harder, it clicked and now NFC and wireless charging is working again on my N5.
pineapplato said:
I had the same problem, which lead me to this thread. Based on SunburntChicken's post, I started pressing the back of the phone around the camera. Right in the middle of the phone at about the camera level, there is some give. When I pressed a bit harder, it clicked and now NFC and wireless charging is working again on my N5.
Click to expand...
Click to collapse
THANKS!
This worked for me, i switched my Backcover and QI and NFc didn't work anymore, now I pressed hard on the back and it maked a click, now everything is fine again!
pineapplato said:
I had the same problem, which lead me to this thread. Based on SunburntChicken's post, I started pressing the back of the phone around the camera. Right in the middle of the phone at about the camera level, there is some give. When I pressed a bit harder, it clicked and now NFC and wireless charging is working again on my N5.
Click to expand...
Click to collapse
This. If you remove the back plate you may need to do this to regain NFC and Qi charging.
pineapplato said:
I had the same problem, which lead me to this thread. Based on SunburntChicken's post, I started pressing the back of the phone around the camera. Right in the middle of the phone at about the camera level, there is some give. When I pressed a bit harder, it clicked and now NFC and wireless charging is working again on my N5.
Click to expand...
Click to collapse
This worked for me as well!
I'm having a similar problem with my Nexus5.
Up until yesterday both Qi charging and NFC was working, but yesterday the Qi charging became sporadic (switching off after 10 minutes, then 30 seconds, and finally not recognising the charger at all). I tried three different chargers with the same results.
NFC is almost broken. I can't beam to a friends Nexus5, but I can read some NFC tags, if I hold it very steady and in the top left corner of the phone (near the camera).
I've pushed as hard as I dare on the cover, but not heard (nor felt) any clicks. Suddenly, however, Qi charging works again. NFC is still equally patchy...
It's tempting to open it up and clean out the connectors properly, but I'm worried that I might break more than I fix...
I'm also having trouble with NFC (haven't tried wireless charging yet) - as mentioned, putting pressure on the back will make it work, but only as long as I keep the pressure on. Can you fix it with card stock, like the GPS contacts? I tried pressing hard on the back cover, but there was no click, and as far as I know my back cover has never been opened.
Thanks for the info - the charging on mine has started failing recently (very annoying to put a low battery phone on the charger at night, see the light come on and it start charging, but then it quit sometime during the night so you wake up to a completely dead phone!)
I squeezed on mine, but no clicks. Also didn't start charging. Guess I'll have to pop the back off and check the contacts. I don't have any NFC tags here to work to test with and see if both are out, but I can check when I get home.
When I got home I pried off my back cover. Looking at the contacts for the QI, they're VERY worn and basically the contact point is worn through to the plastic below:
IMG_8266.jpg by mostlytechnic, on Flickr
I bent the spring contacts on the phone side a little so they made fresh contact and now it's working great again. If it starts failing again, I'll probably just replace the back cover.
pineapplato said:
I had the same problem, which lead me to this thread. Based on SunburntChicken's post, I started pressing the back of the phone around the camera. Right in the middle of the phone at about the camera level, there is some give. When I pressed a bit harder, it clicked and now NFC and wireless charging is working again on my N5.
Click to expand...
Click to collapse
Thanks a lot, it work, I change my backplate to a white one and all of the sudden NFC didn't work, been changing ROMS several times. And then this thread came along.
Thanks a lot.:good:
After my fix, it worked for a few days but then started failing again. I assume the springs just bent back to their normal position. But I called the google and since it's less than a year old (and bought from the play store) they're replacing the phone.
pineapplato said:
I had the same problem, which lead me to this thread. Based on SunburntChicken's post, I started pressing the back of the phone around the camera. Right in the middle of the phone at about the camera level, there is some give. When I pressed a bit harder, it clicked and now NFC and wireless charging is working again on my N5.
Click to expand...
Click to collapse
This also worked for me! Thanks
pineapplato said:
I had the same problem, which lead me to this thread. Based on SunburntChicken's post, I started pressing the back of the phone around the camera. Right in the middle of the phone at about the camera level, there is some give. When I pressed a bit harder, it clicked and now NFC and wireless charging is working again on my N5.
Click to expand...
Click to collapse
Can confirm, it worked for me as well!
Thanks. Bought a replacement cover from eBay. Was about to return it as faulty as NFC and QI charging wasn't working. Clicked the back cover in as described, and it it all works again.
Many thanks to the OP for this.
Same Here
My N5 has never been opened or dropped but started not charging via Qi as well. Pressing on the back just below and to the right of the "s" has got it working again for me. There was no click though so I don't think the snap lock has come away. Just too much flex in the back cover.
Is anyone having issues with wireless charging only when the phone is on? My phone charges fine on my nokia charger only if the phone is off. While booting it also sees the charger but as soon as it says "Android" it decides it doesn't want to charge wireless anymore.
just had the same problem
without seeing this thread, i figured out the fix was pressing the back until i heard the click.
I posted the fix (with a photo) on my blog but it seems that the info was already here
Here is a link if anyone is still interested (it will show the area you need to press for the click):
http://me-ol-blog.blogspot.com/2015/08/faulty-wireless-charging-on-nexus-5.html
Google replaced my phone just under a year ago for this problem. Now the replacement has just started doing the same thing. Qi is barely working. My current plan is to buy a new back cover to fix it and then sell the phone when the new Nexus phones come out soon... was probably going to do that part anyway
I guess I just need your help... I have tried everything: pressing on that spot, replacing the back cover, cleaning the qi and NFC contacts... It all just helps for a few days, and then my N5 refuses to be charged by qi again.
Is there anything else I could try? Could it be a software issue (I'm using Terminus ROM)?

[HELP!] Photon Q display suddenly faulty

So I was using my Photon Q as usual, had a sick new CM11 install I was playing with for the last week or so, and all was good. I pulled it out of my pocket before I took a shower to check the time and nothing. The keyboard would open when slid out, and it even buzzed when i force restarted it. The backlight turns on for a few seconds when turning it on but other than that, no dice, it turns right off. HDMI out is doing nothing either. It is detected by my computer and otherwise acts like everything is normal. I didn't drop it, it was just in my pocket and a little warm, but it was really just the usual "pocket" warmth. What the **** happened? I can't even tear it open to check because one of the inner screws is stripped : (
EDIT: Can't boot into fastboot or anything manually, connections look good, this is so annoyingly random, and this is the first motorola device to just fail on me without reason...
EDIT EDIT: Died in my drawer last night, plugged it in and the green LED turned on, but shortly after it turned off and and now I am back to exactly where I was before.
Answer: So As you can see from the replies below I am most likely dealing with a broken flex cable to the front panel. I am gonna save up for an un-modded replacement and just swap motherboards. I gutted my current Photon Q and am storing all the parts in bubble wrap, with the motherboard delicately wrapped in paper (less friction, it's sim modded and those exposed copper wires just seem so fragile)
@CornholioGSM I ping you because you are the main Photon Q guys and one of the few still really active, you have seen this phone inside out, any ideas???
EDIT: I checked all the connection after tearing away plastic, it's all good looking. I don't understand wtf happened...
It's usually an issue with the flex (ribbon) cable... all I can say is make very sure that cable is still properly connected.
Good luck.
One of my Photons had a dead display while another had an apparently dead display because the broken flat cable.
Hard to say which one is the culprit w/o a close visual inspection to the flat cable, and even in that case a flat cable apparently in good shape can have one or more broken lines.
BTW a LCD panel can theoretically last for decades, while the cable has a finite number of sliding operations, so the latter is more likely to be the culprit.
Possibly your best option is to get a cheap unmodded PQ from the USA, and replace the whole screen assembly w/o further investigations. Less risk to damage something, way less time needed for the transplant, and possibly even the cheaper option.
The Solutor said:
One of my Photons had a dead display while another had an apparently dead display because the broken flat cable.
Hard to say which one is the culprit w/o a close visual inspection to the flat cable, and even in that case a flat cable apparently in good shape can have one or more broken lines.
BTW a LCD panel can theoretically last for decades, while the cable has a finite number of sliding operations, so the latter is more likely to be the culprit.
Possibly your best option is to get a cheap unmodded PQ from the USA, and replace the whole screen assembly w/o further investigations. Less risk to damage something, way less time needed for the transplant, and possibly even the cheaper option.
Click to expand...
Click to collapse
Thanks, I'll probably use whatever money I get from my Nexus 5 sale for a replacement Photon Q (un modded). Mine is beat up from a recent camping trip, scratches all over, I need this anyway. Worst case I have myself a sweet new music player. For now I am using a Galaxy Nexus, which I love, but I miss the Sailfish OS support.

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