So I bought a second hand Nexus 5 with a defective spekaer (the one for making calls) and microphone. I wanted to fix it so I bought replacement parts from Aliexpress (the earpiece speaker and the charging flex cable since that is what the microphone is connected to). When I had repleced them the screen wouldn't turn on anymore.. It stayed black no matter what I did. I noticed there was some backlight though.. I noticed some things:
1. It vibrated when I turned it on.
2. It gave a low battery notification sound when it was finished booting.
3. My computer plays the sound like it detects something when I connect it but nothing appears in explorer or device manager.
I tried putting the old flex cable in but that didn't work..
What could I try?
Look carefully at the connections on the motherboard and the connecting cables to see if there are any damaged parts.
audit13 said:
Look carefully at the connections on the motherboard and the connecting cables to see if there are any damaged parts.
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Nope I checked that
Look in the attachement to see how everything is connected..
Maybe something happened when you were changing the flex cable as that seems to be the only explanation since the screen doesn't work with the original and replacement part.
audit13 said:
Maybe something happened when you were changing the flex cable as that seems to be the only explanation since the screen doesn't work with the original and replacement part.
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What could be damaged then?
First thing that comes into my mind is that you did not/forgot to connect the LCD flex cable or the lcd cable is broken or the lcd is broken.
The backlight and the lcd display should be two separate things, 1 might work but the other might not.
You can try tapping on the screen to see if anything happens to it or try to call your phone and see if you can pick up the call.
Also, did it work before you change the cables? are you sure the microphone and speaker are the only thing broken in the phone?
ck.chunkeat said:
First thing that comes into my mind is that you did not/forgot to connect the LCD flex cable or the lcd cable is broken or the lcd is broken.
The backlight and the lcd display should be two separate things, 1 might work but the other might not.
You can try tapping on the screen to see if anything happens to it or try to call your phone and see if you can pick up the call.
Also, did it work before you change the cables? are you sure the microphone and speaker are the only thing broken in the phone?
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I will try that. I just plugged it into my pc to charge it and it detected it and showed it in the device manager. This is without the plates over the PCB's, I don't know if that matters..
Yeah I tested it before I took it apart and it worked fine except for the speaker and microphone.
The cable leading from the motherboard to the LCD is in the upper right hand corner of the phone, near the headphone jack.
Related
I'll start from the beginning. I noticed my phone's screen would kinda freeze or blur like a static tv. The screen would dim when I slide it open. I figured it would be either one of these 2: the lcd screen or the main flex cable. I had already replace the digitizer like 4 months before this and the digitizer work great after installation.
Here's my problem. Now that I installed the main flex cable the lcd works great but the digitizer stopped responding. I also noticed that the phone will only charge if I turn the phone off then plug in the charger then turn the phone back on. If the phone is on and I plug in the charger the phone will work for like 5 seconds then it will freeze then restart by it self. Its wierd.
I checked the cables, all the cables, to make sure they were all properly connected and locked. Everything inside, hardware related is working.
Here's something else that is important. My mother has the exact same phone as me. So, I switched the earpiece flex cable, (I thought maybe it was this cable that could be malfunctioning), from both phones to see if this cable was the problem. The lcd on my phone still worked but still no digitizer response. Here's what is crazy about this. Now my mothers phone does not work. I installed her original cable and rechecked all cables and now her phone has the same problem!
I came to the conclusion that there is a slight chance that it might be a minor cable mistake that I made on BOTH phones -or- There is some sort of software or firmware or something that needs to be installed. (Like when installing a new printer on a computer, you would need the installation CD) Maybe after I unlocked and pulled the main flex cable some sort of memory was interrupted or something. Although I am not sure if that is even possible...but umm...yeah. Any help?
I was replacing the touchscreen of my Xperia J when I broke a small cable.
It connects two circuit boards. It's the cable that the guy is handling at about 2:30 in this video.
Here is also a picture of the cable.
I would like to know the name of this cable so I can buy a new one from eBay or something
I would also like to know what exactly it does. I noticed that my phone doesn't turn on without it. When I try to turn it on, it vibrates but doesn't actually turn on.
thetwistedx said:
I was replacing the touchscreen of my Xperia J when I broke a small cable.
It connects two circuit boards. It's the cable that the guy is handling at about 2:30 in this video.
Here is also a picture of the cable.
I would like to know the name of this cable so I can buy a new one from eBay or something
I would also like to know what exactly it does. I noticed that my phone doesn't turn on without it. When I try to turn it on, it vibrates but doesn't actually turn on.
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It looks like a Wifi antenna or cellular cable but i'm not sure.
that's an RF antenna. No more connections like wifi, cellular will be transmit if you removed that cable.
Hi,
I replaced my Nexus 5 battery after it was showing signs of age, and now battery life is good.
However, after changing my battery, I have noticed that the speaker is not working anymore. Thinking that I might have damaged it during battery replacement, I got a new one off eBay. Sadly enough, I replaced the speaker with a new one and the issue still persists.
Earpiece works 100% and headphones work 100%
So I was wondering what to look for; any pointers?
Thanks
When you say "phone speaker works", you mean the earpiece speaker at the top of the phone?
Is it possible the USB flex cable was damaged?
http://forum.xda-developers.com/google-nexus-5/help/to-buy-usb-charging-port-flex-cable-t3314357
Yes. I mean earpiece, I am sorry.
The USB Flex Cable was also replaced; this was due to getting a static screen on my phone. As far as I know, the flex cable is responsible for charging and such but not for audio. I might be wrong.
Edit: The Flex cable was replaced around 5 months ago, not now. I re-assembled the cable to make sure, but to no avail.
I replaced half the parts in this bloody thing!
Regards
Mine had the same behaviour, is the flex female on the mainboard that connects between mainboard and speaker, check how to fix audio at youtube.
If u press somewhere behind ur camera u get sound?
Sent from my Nexus 5 CAF using Tapatalk
Hello everybody. I recently changed my frame + display on my nexus 5 and screen doesn't work. First i saw the backlight but after I tried to put more pressure on orange flex cable that connect it to the morherboard it didn't work anymore. I tried to use an old but working flex cable but nothing changed and I tried also with my old display and frame but nothing still nothing changed. I don't know what to change to make it work again, could that be a motherboard problem? Do anyone of you know what is damaged?
Thank you
It could be a screen or motherboard problem.
if i do change the motherboard would it work again right?
Did you change the flex cable that runs from the USB port to the motherboard? If yes, I think this is for charging and data transfer.
Where did you get the screen? It's possible that the screen or motherboard is defective: with nothing on the screen and the phone making sounds, ringing, etc. indicates a screen problem. Pressing on the cable and getting it to work for a short time indicates a motherboard problem (looses or broken connecting cables or onboard connector).
If you want to isolate the the problem, you would need to test with either a know working motherboard or screen.
For some time I had problems with the mic, flickering display and non-responsive touch. I have opened the phone to reseat the flex connection and it has only worsened the problem: the display would not turn back anymore.
I have ordered a new flex cable and the problem persists... but I have a problem with diagnosis. The thing is the motherboard seems to work correctly, as I can find the phone with the Google site (although I cannot play the sound?). On the other hand, before the flex replacement the display would show colorful static, so it does not seem to be physically damaged by my repairs. What else could it be, then? For a while I thought that maybe it is the flex plug on the motherboard, but then the phone is seen as Nexus 5 through USB, so at least some of the data are going through from the USB port to the motherboard...
Without having another working screen, it would be tough to pinpoint the problem.
I do not have another working screen... or so I thought. I have connected the phone through HDMI to my TV and it seems to work, except it is very, very slow. This makes the screen issue more likely.
I agree.
Even a screen that shows scrambled images or static doesn't necessarily mean it's functional.
I've gone through this myself in trying to decide which to buy first: a screen or motherboard.
I have ordered a new display - no luck... It turns out it was the motherboard after all, more specifically, the port for the flex cable. It became more evident when part of the port fell off during the screen replacement...
JabberwockPL said:
I have ordered a new display - no luck... It turns out it was the motherboard after all, more specifically, the port for the flex cable. It became more evident when part of the port fell off during the screen replacement...
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Sorry to hear that.
I recommend looking for a cheap Nexus 5 with a broken screen and working motherboard for a cheap price.