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[Q] Front and Back Camera and LED stopped working after screen replacment

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bhtp
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Default [Q] Front and Back Camera and LED stopped working after screen replacment

Hi, I'm having an issue with my Nexus 5 which is that the front and back cameras as well as the back LED no longer seem to function. This happens in the stock Camera app where as soon as it is opened, an 'Unfortunately, Camera has stopped.' message comes up and blackness is shown. This also happens in third party apps such as Snapchat where the message 'Snapchat was unable to open the camera. You may need to restart your device ' comes up. In addition, upon attempting to use Tesla LED, the back facing LED does not turn on.
The likely cause that I can see is the recent screen replacement that took place. I ordered this[1] online which came with a new set of cameras as well as a new screen. I took the motherboard, battery and rear case from the old phone and attached them to the new set of cameras and the new screen.
After performing the replacement, everything else worked except the cameras and the LED.
Upon seeing the issue, I tried swapping out the new rear facing camera (that came with the screen replacement) for the old rear facing camera that was in the old phone (the camera still worked before the replacement). After swapping the rear camera the issue was unchanged.
I have tried the following in terms of software fixes:
-Other camera applications - they crash or are black
-Clear cache and application data for the stock camera app - no effect
-Change to ART - no effect
I would greatly appreciate any help or advice that you can offer.
 
Lokke9191
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I'd reinstall stock rom and gapps, if they still don't work you know it's a hardware problem for sure. Then troubleshoot from there.
 
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Originally Posted by Lokke9191 View Post
I'd reinstall stock rom and gapps, if they still don't work you know it's a hardware problem for sure. Then troubleshoot from there.
I factory reset the device and tried the default Google Apps, still having the same issues.

Any suggestions for hardware trouble shooting?
 
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Originally Posted by bhtp View Post
I factory reset the device and tried the default Google Apps, still having the same issues.

Any suggestions for hardware trouble shooting?
As for hardware trouble shooting, being that you know the original cameras worked, all you can do is check the connections . I'd unplug them and plug them back in.

I'd also try flashing the 4.4 stock camera zip and see if that works.
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File Type: zip N5_Cam_Stock_4.4_Only.zip - [Click for QR Code] (417.9 KB, 8 views)
 
bhtp
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Originally Posted by Lokke9191 View Post
As for hardware trouble shooting, being that you know the original cameras worked, all you can do is check the connections . I'd unplug them and plug them back in.

I'd also try flashing the 4.4 stock camera zip and see if that works.
I tried reattaching all of the physical connections and that did not seem to make a difference.

In regards to flashing the 4.4 stock camera zip, would you be able to give me a little guidance as to how that process would occur?

Thanks so much for your help so far.
 
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You'd need to root, install a custom recovery (twrp), use titanium backup to uninstall camera. Then boot into your custom recovery and install the camera zip.
 
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You'd need to root, install a custom recovery (twrp), use titanium backup to uninstall camera. Then boot into your custom recovery and install the camera zip.
Sorry for such a long response time.

I updated the phone to 4.4.3.

Interestingly the back facing camera appears to have started working. The default camera application still fails to open, but when I use another application (Snapchat) and have it set to try the backfacing camera first, everything seems to work ok. However, when I switch to front facing the application says that it can't find the camera.

In addition, the back facing LED has begun to work again as well.

Previously, I had switched out the new rear facing camera (that came with the casing) for the old rear facing camera hoping that it might changes things. I recognize retrospectively that my method of testing was flawed as it seems as though regardless of whether one of the cameras is/was working the application would not open.

Hoping that the replacement of the rear facing had caused it to start working, I swapped out the new front facing camera for the old one. Upon testing, the issues with the front facing camera seem to persist.

At this point I'm not sure how to proceed. The lack of functionality of both front facing cameras (the old and the new) would seem to suggest an issue with the connector on the motherboard if the problem were hardware based. I'm not sure, though, if the problem could somehow be in software.

One software phenomenon that I observed is that as soon as I try to use the front facing camera, the back facing camera stops working again requiring the application to be reset. This occurrence has led me to question the causation between the update and the new functionality. It is possible that in my testing of the device before the update, I had simply been opening the front facing camera and upon seeing it fail, and trying the back facing camera and seeing it fail (because I had tried the front facing camera), that I assumed it was not working.

If you have any recommendations on how to proceed I would greatly appreciate hearing them. If not then thanks for all your help.

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