Nexus 5 won't power on after screen replacement - Nexus 5 Q&A, Help & Troubleshooting

My Nexus 5 got squished such that the screen was badly cracked and the digitizer stopped working. I still like this phone, so I ordered a replacement screen+digitizer (and battery too) and tools to replace them.
Everything seemed to go fine at first. After getting the old screen out I attached the new one and I wanted to test it before putting everything back together so I set the motherboard and charger board in place and connected all the cables without screwing everything down. I turned the phone on and it worked. The screen+digitizer worked and it looked like my phone would live.
Then I screwed everything back together and it wouldn't turn on. I mean I would push the power button and nothing at all would happen. So I took the back cover off and unscrewed everything and tried again and it powered on again. So I started putting it back together one piece at a time and what I think I've narrowed it down to is that when I put on the small cover over the motherboard (iFixit calls it the midframe but I'm not sure that's right -- sorry can't post link) and screw in the top-right screw (as viewed from the back -- it's the one above the volume control) then it won't power on. I assume something is shorting out. I don't even actually have to screw in that screw. If I squeeze that corner a bit, it won't power on.
Any advice? Thanks in advance.

I think I got it. Since the front camera was near that screw I tried taking it out, then putting everything else back together and the phone worked! The front camera had fallen out during disassembly. So I watched a video on how to replace it and found out you have to stick the tab coming off the camera underneath the rubber tab attached to the frame. I did, put everything back together and it works.
Thanks for reading.

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[SOLVED] TF300 wont turn on

So I was applying my xtremeguard wet screen protector today on my TF300.
I tried to use as less water as possible, and squeezing the water out towards the edges, and collecting the residue with a microfiber towel.
About half an hour later, I turned it on, and the touch screen didnt appear to work, will it was working if I pressed like 10 times on the 1 spot, but it wasnt very responsive. Turned it off again for a little while and went to turn it back on now and it is not powering on
When I plug into charge the orange charge light does not appear on the power button, only on the dock. It appears to be completely dead...
I tried holding the power button for more than 60 seconds, still nothing.
I even took off the back to see if there was any water under there, but nothing, completely dry.
Can anyone tell me what my best plan of action is?
If I take it back to the retailer they only offer a repair since it is outside of 28 days of purchase, and even then thats likely to take weeks
Cheers guys
i guess the water somehow went inside the tablet, looks like the way asus glues the tablet with the screen (at the edges) are bad, i feel like you can easily let water go inside it. so... i know you were careful, but...
you don't see water in there, you see it's dry, well because it got dry, remember just a little water can cause electronics to die
i hope you can return it and get a new one , or maybe you could try leave it there for a few days, then try to turn it back on again
Leave charging for a couple of hours and see if it turns on, if not try to return it.
Good luck.
Op make sure the proximity sensors are not being covered by the screen protector. That's what happened to mine... then I realized they've sent me a screen protector made for the tf201 not tf300.
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
Hi all, it is working!
In my desperation, I removed the back cover from the device, and placed the whole tab in a casserole dish filled with rice overnight... After I came back to it and tried to switch it on, it would still not switch on.
That was it, I was at the end of my tether and was just about to put the back cover back on and take it back to the retailer for an exchange/repair. I noticed that there were a couple grains of rice underneath the gold cover on the back with the small yellow warranty sticker on it.
I shook the device from side to side to try and get the rice out (not a good idea leaving that in there if it was going back for repair) and the bloody gold cover came off, along with halfing the warranty sticker in 2 at this point I was about to cry because I knew i'd never get it repaired now.
Low and behold when the gold cover came off I noticed the connector that connects the battery to the motherboard. Curious, I unplugged it for a second and plugged it back in then tried to power the tab on.....
IT WORKED!
It may have just been a case of the battery shorted out with that little drop of water and it needed to be disconnected and reconnected before it allowed power on again to the rest of the components..
So its back together and everything is working fine now, charging and everything
thanks
mcall_r said:
Hi all, it is working!
In my desperation, I removed the back cover from the device, and placed the whole tab in a casserole dish filled with rice overnight... After I came back to it and tried to switch it on, it would still not switch on.
That was it, I was at the end of my tether and was just about to put the back cover back on and take it back to the retailer for an exchange/repair. I noticed that there were a couple grains of rice underneath the gold cover on the back with the small yellow warranty sticker on it.
I shook the device from side to side to try and get the rice out (not a good idea leaving that in there if it was going back for repair) and the bloody gold cover came off, along with halfing the warranty sticker in 2 at this point I was about to cry because I knew i'd never get it repaired now.
Low and behold when the gold cover came off I noticed the connector that connects the battery to the motherboard. Curious, I unplugged it for a second and plugged it back in then tried to power the tab on.....
IT WORKED!
It may have just been a case of the battery shorted out with that little drop of water and it needed to be disconnected and reconnected before it allowed power on again to the rest of the components..
So its back together and everything is working fine now, charging and everything
Click to expand...
Click to collapse
Thanks!!!! Very useful!!!!!!!!!!!!!!!
Thanks for posting...in Switzerland and took my tablet out of suitcase and nothingwor
Found your fix and it worked...love the internet!!?

[Q] Sudden death

Hi all
My Nexus 5 has been giving me issues over the past few days. Yesterday it switched off by itself and then wouldn't turn on again for an hour even though the battery was charged (probably between 80% and 90% at that time). Today it switched off and rebooted a few times at work. Then this evening, when I decided to try factory resetting it, it died (before I'd even attempted it) and won't turn on at all. Holding in the power button for over a minute does nothing.
I'm in South Africa, so I'm not sure Google would replace it.
Any suggestions, tips, tricks, hints, spells?
Sounds like a bad logic board sadly I would say there's not much you can do
Looks like I've fixed it, though I'm not sure how long it will last. I disconnected and reconnected the battery and that seems to have fixed whatever the issue was.
I opened the device up according to this guide from iFixit. If you can get your nail in the groove of the back cover, you can slowly pry the cover off, with a plastic prying tool you can probably do it a lot easier and safer. Then you just need a tiny screwdriver to get the top inner cover open and then unclip the battery cable, leave it for a few seconds, and clip it back in.
HawkiesZA said:
Looks like I've fixed it, though I'm not sure how long it will last. I disconnected and reconnected the battery and that seems to have fixed whatever the issue was.
I opened the device up according to this guide from iFixit. If you can get your nail in the groove of the back cover, you can slowly pry the cover off, with a plastic prying tool you can probably do it a lot easier and safer. Then you just need a tiny screwdriver to get the top inner cover open and then unclip the battery cable, leave it for a few seconds, and clip it back in.
Click to expand...
Click to collapse
Strange, because holding the power button is built into the device to emulate a battery pull. I wonder if it is an issue with your power button.

Phone shuts off when you push on back case

I took my phone apart, to see if any of my 16 months old spit got inside the phone, since I found it in her mouth, and the phone touch screen was tweaking out. When I took it apart I didn't see any liquid inside, but I left it taken apart for a couple days. When I put it back together, when I go to snap in the clip on the middle of the back cover, the phone shuts off. I cannot figure out what is causing this. The battery flex cable is snug.

[Q] Power Button Ribbon Damaged During Screen Replacement

(sorry, just saw that there's a help forum - but I don't know to move my post, or if I can.)
I had ordered a screen / middle frame assembly and replaced everything, based on a couple youtube videos (I hadn't run across the replacement thread here at the time). It went pretty smoothly, except for the logic board screw, which I had a difficult time getting out, and more difficult getting back in. All because I was impatient - I was visiting family and away from all my tools. So I ended up using needle nose pliers to get the logic board screw back in, but after I finished, the OPO wouldn't turn on. The screen does display the initial charging animation when plugged in though, so I think it's just not getting the power button click. After opening it back up, it looks like I damaged the ribbon to the power button. - I have attached the best picture I could get.
Any ideas on what my next step should be? It's hard to tell where the apparently exposed wire is run - to the other contact? It's hard to tell if it's shorting, or what.
I would appreciate any ideas or help!
Thanks

power button help, plz! - - OMG i feel so dumb

Okay... I replaced a broken digitizer on a tf300t i had sittin round. Worked fine after reassembly, until i noticed i got an eyelash inbetween the digitizer and lcd. I finally had time to disassemble the gd thing today... Took forever! So now that i've reassembled it, it won't turn on. So... Opened it back up, and realized i've lost the little silver doohickey that sits on top of the sensor on the ribbon cable...
Found a replacement ribbon cable thingy for $12, but all i need is the little silver bit that lays on top. Is there ANYTHING I can do to keep from forking out $12 for some little bit of metal on a plastic tab?? I'm considering taking the one off the volume down button as a stopgap, but the volume button really should work properly, especially since i've got a brand spankin' new digitizer.
Edit: just remembered i can get it turned on by plugging in the charger, so... Is there any kind of app i can install that'll give me software access to the power menu? If I can just find a way to turn it off (other than waiting for the battery to go flat), i'll accept that.
Found one. If anyone else needs one, search 'allenfang' on google play.

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