Database Develop

[Q] Commons problems of hardware on Milestone/Droid phones

Hi, greetings from Colombia!
Mi Motorola Milestone (that I buy the last September after my lost Nokia 5800) on this days had one hardware problem, the power button failed (semms broken), so I take it to the warranty (using CyanogenMod 7 for Milestone Android 2.3.5) and the fixed it!! Weee... But...
I just enjoy my fixed phone for just 1 week, because another defect comes up, the digitizer begins to fail, first, become unresponsive from the right side (and the search button), and, after 3 days, all was OK, but in the afternoon the scren become "crazy", and sometimes the right side begins to fail again, so.. this Monday i has to return it to warranty (I'm hoping that they change my phone for a new one).
From my sight, I have a really bad luck, having two of the most commons problems of this Milestone/Droid phones.
Do you know another common failure of this phones?

The "bubbly" keyboard is quite likely to lose a few keys and the paint on the camera button comes off quite frequently.

I have experienced some of those hardwares problems with 2 Milestones. The camera button I guess its the most common.
Hardware problems that I had:
- Digitizer failing. Replaced on warranty, no problems since.
- Camera button paint came off.
- Bad headphone jack.
- Bubbly keyboard on one of the phones, went to RMA, problem persisted.
- Loose battery cover.
Most of the problems you can live with, except for the failing digitizer.
Sent from my Milestone using XDA Premium App

my digitizer went bad. bought a replacement on ebay. arrived in 9 days. it ain't so straightforward inside the milestone coz of the slider mech but all's good now

linuques said:
[...]
- Digitizer failing. Replaced on warranty, no problems since.
[...]
- Bad headphone jack.
[...]
Click to expand...
Click to collapse
Second that.
Lots of people report their screens going nuts or becoming unresponsive - due to moisture or general digitizer failure
My headphone jack was a pain at first - but the more often I use it the better it gets

Guys - I am expecting to receive my Milestone (1) on Monday. But I am just now seeing these hardware issues that you had. After how long did the hardware problems - especially the digitizer - show up? I'm wondering how long I will have to go before it starts calling for parts!

My digitizer died after 9 months (December -> August). At the beginning (first week before completely dead) right side of screen stops working. In second week I saw that digitizer is jumping over menus by itself, then screen stops working.
Everything else is working fine. I hope there will be no other problems with other parts of phone

adamz667 said:
My digitizer died after 9 months (December -> August). At the beginning (first week before completely dead) right side of screen stops working. In second week I saw that digitizer is jumping over menus by itself, then screen stops working.
Everything else is working fine. I hope there will be no other problems with other parts of phone
Click to expand...
Click to collapse
Same time for me, after 9/10 months my digitalizer started to fail, and the power button problem was 9 months after I got it, btw maybe my power buttons problems was caused by using this buttons to hang out calls (using CM7 settings), so my advice, don't use this function.
And, talking about my phone, the replace it . Now I have a new Milestone, wee...

I bought mine in May 2010 and haven't had any hardware problems.
But a friend of mine bought his' just a month earlier and his keyboard fell apart and the camera button lost its coating.
I guess it's just a matter of luck - and good care of course

The headphone jack has been the only problem I've run into, and it's an issue that apparently can be at least partially fixed by shimming it in one direction or another.

Thanks for the heads up. It seems I have nine months before sh!t starts happening then! Lol. I'm wondering if some of those hardware problems can be fixed or prevented by opening up the phone and giving it a periodic brush out / clean out? For example the headphone jack after becoming loose can probably be re-soldered, etc?

I don't think the solder connections are faulty on the headphone jack.
It just seems to be a little to loose for most 3,5mm plugs.
Some of my headphones give me a lot of trouble - others none at all.
And the more I use it - the less problems I get.
So I'm led to believe that it's more a problem of dust and corrosion that worsens the contact quality.

Talking about headphones, I use a wired BlackBerry headphones, seems ok for me, but sometimes when I move it in the jack, my music is paused (maybe this is related with the different standars of jacks?)

Even if you use a standard 3,5mm stereo connector with not 4th contact at all the phone's gonna interpret a slight loss of contact the same way it does pressing the media button on a media headset.
My Milestone sometimes started playing music when I was watching a movie or whatever.
But if your Phone is rootet you can use the app Autostarts to disable the phone reacting to the media button and therefore problems with loose contacts.

[Q] Replaced microphone not working

I've recently replaced the bezel on my phone and in the process broke the ribbon between the two hardware buttons. I ordered a new one and swapped them over with what I thought was no problem. The keypad note works but now the microphone has stopped working entirely. Could this be a software issue (I do doubt this) as I'm on a stable version of CM10? All the connections are linked up and everything looks fine. This one has me completely baffled

open it up again and check the antenna cable again. Maybe it isn't inserted correctly?

That's a good point. I accidentally crushed the antenna cable but wasn't aware that it was relevant when considering the microphone. The rest of the phone works fine including the mobile signal. May have to link up my old mic just to check this

Aargh! It turns out that the old mic is still working so the new one appears to be the issue. Hmmm, wonder what gets a better resale value a phone with no working buttons or one with no working mic *sigh*

well I changed once front bezel from SGS1, too. Still have the old one. Maybe just buy a new parts? I think those don't cost a lot. Whole front bezel cost about ~100e.

I think after this poor attempt to repair the phone I'm gonna put the device up for sale

I just dismantled my 4x HD!! And replaced the headphone jack!

Thought I'd share what I've just done! I (rather stupidly) was listening to music while working on my car - the only headphones I had to hand had a big size (6.35mm) headphone jack, so I had an adapter in there too. Al this meant a rather large lever poking out the side of the phone. I'd obviously bent down to do something and wrenched the socket to one side. The 6.35mm adapter had been bent over and broken... and when I tested the phone I found the socket was broken to - only working in one ear
I went on line and found this guide to dismantle the phone! http://www.youtube.com/watch?v=kGD64_g-ssE
Actually nothing to it! Except Even though I do have a very small set of screwdrivers the screws used on the phone are really small!
I bought a new headphone jack from here for £20.08 delivered : http://www.etradesupply.com/catalogsearch/result/?q=lg+p880
And it arrived in the UK in less than a week from the US!
Out of interest the headphone jack can be removed without any of the other circuit board connectors, or the board itself being loosened.
It also houses the proximity and light sensor, I did put it back together and find the proximity sensor was constantly reading 'near' (using the hidden menu 3845#*880# )So I quickly opened it back up again, removed and replaced it one more time. Now it works great, I must have had it badly placed

Well, at least the video was not published in vain
Nice work!
Sent from my LG-P880 using xda app-developers app

Thanks for decribing this.
I guess I have to replace my jack, too, since it doesnt hold my headphone strong anymore and sometimes the electric connection of the headset mic gets lost.
I have found the jack for about 5$ incl. shipment at DX:
dx.com/p/replacement-earphone-audio-jack-flex-cable-for-lg-optimus-4x-hd-p880-black-golden-177775
(I'm not allowed to insert links)
For me, this seem to fit, but I have seen here, that there is a Version A & B out there !?
w_w_w.etradesupply.com/lg-optimus-4x-hd-p880-earphone-jack-flex-cable-ribbon-headphone-jack-ribbon.html
(I'm not allowed to insert links)
best regards

stef_seidler said:
Thanks for decribing this.
I guess I have to replace my jack, too, since it doesnt hold my headphone strong anymore and sometimes the electric connection of the headset mic gets lost.
I have found the jack for about 5$ incl. shipment at DX:
dx.com/p/replacement-earphone-audio-jack-flex-cable-for-lg-optimus-4x-hd-p880-black-golden-177775
(I'm not allowed to insert links)
For me, this seem to fit, but I have seen here, that there is a Version A & B out there !?
w_w_w.etradesupply.com/lg-optimus-4x-hd-p880-earphone-jack-flex-cable-ribbon-headphone-jack-ribbon.html
(I'm not allowed to insert links)
best regards
Click to expand...
Click to collapse
I got the ETrade one. Also I think parts4repair.com sell parts for the p880.
The little arm you can see poking out actually bends and doubles back under the socket part. I found my screen wasn't waking up when I moved the phone away from my face, I just opened my phone back up and padded it out (between the socket and the sensor part) with a little shim (card etc, I actually cut off and used a little piece of a lens cleaning fine cloth) and now the screen wakes perfectly for me! That was my biggest gripe (apart from huuuuge lag when the browser opens!) and i no longer feel I need to ditch the phone!
Don't lose the little square rubber part that the sensor part sits in! And I recommend using a tiny flat-head screwdriver for the phone's screws, the posi-head screws are so tiny I couldn't get a good fit, and it's all too easy to ruin the tiny screw heads.

on/off button doesn't work.
Anybody know how to fix the on/off button. ?
I'm really pissed, I've had the 4x only 6 weeks and don't think I overused it.
button placement and size isn't that great to start with.
I flashed Arararagi vanir 4.3 and it was running great too.

I've never had any problems with the headphone jack, have my phone for about 4 months now

EnricoDNY said:
Anybody know how to fix the on/off button. ?
I'm really pissed, I've had the 4x only 6 weeks and don't think I overused it.
button placement and size isn't that great to start with.
I flashed Arararagi vanir 4.3 and it was running great too.
Click to expand...
Click to collapse
The on/off button? buy a broken 4x?
I took mine apart a few months back to clean the inside of the screen.
Had to send it back to LG as had a few issues regarding call quality and the screen not coming back on when you take it away from your face - Just got it back and they replaced a case and a lense? Not sure what lense though.
It also said Software update - They sent it back with ICS

Captain Sisko said:
The on/off button? buy a broken 4x?
I took mine apart a few months back to clean the inside of the screen.
Had to send it back to LG as had a few issues regarding call quality and the screen not coming back on when you take it away from your face - Just got it back and they replaced a case and a lense? Not sure what lense though.
It also said Software update - They sent it back with ICS
Click to expand...
Click to collapse
they probably even permanently locked your bootloader, if it was unlocked your "phone not turning on when moving away from ear" problem was sensor miscalibration that you could've fixed easily.

on/off button doesn't work.
Captain Sisko said:
The on/off button? buy a broken 4x?
I took mine apart a few months back to clean the inside of the screen.
Had to send it back to LG as had a few issues regarding call quality and the screen not coming back on when you take it away from your face - Just got it back and they replaced a case and a lense? Not sure what lense though.
It also said Software update - They sent it back with ICS
Click to expand...
Click to collapse
No. it was new when I bought it.
Had it for 6 weeks before the power button stoped working.
just used it everyday, rooted it, a few roms, then daily use.
i expect something like this from a cheap chinese knockoff, not an LG 4x. i had a star b92m where the screen became unresponsive.
next time I'll get a SONY XPERIA Z.
The 4x has been in the shop for two weeks already. .

OverVoltage on the headphone jack =(
I believe is overvoltage, I connected a plug from my radio for louder music(as I usually do) but wasn't working, and tried moving the connector on the radio and instead of plug in input from radio, I plugged in the output from the radio, a sound came from the radio and that was it, no more sound signal from my P880, I love this phone, I'm so angry about this.
So I checked with earphones and nothing, just noise, no volume up or down, and the headphone mode is turned on all the time, do you now a site where the earphone jack flex can be delivered to South America, Bolivia? and if you have some other suggestions or solutions specially for taking out of headphone mode, I even can't make calls! thank you in advance

The two parts places I have used are I have used are etradesupply and parts4repair. There's probably lots of others out there. Not sure where they ship to though

RolandoAmir said:
I believe is overvoltage, I connected a plug from my radio for louder music(as I usually do) but wasn't working, and tried moving the connector on the radio and instead of plug in input from radio, I plugged in the output from the radio, a sound came from the radio and that was it, no more sound signal from my P880, I love this phone, I'm so angry about this.
So I checked with earphones and nothing, just noise, no volume up or down, and the headphone mode is turned on all the time, do you now a site where the earphone jack flex can be delivered to South America, Bolivia? and if you have some other suggestions or solutions specially for taking out of headphone mode, I even can't make calls! thank you in advance
Click to expand...
Click to collapse
Hi, im also from Bolivia try this
PM if you need any help!

Ben-B said:
Out of interest the headphone jack can be removed without any of the other circuit board connectors, or the board itself being loosened.
Click to expand...
Click to collapse
Hi,
Sorry but I don't understanting ... in the video the motherboard is removed. You replace the headphone jack without removing it?
Thanks

Microphone problems

Hi there.
I have the s5mini now three days.
The problem is that my friends understand me very very quietly. In the German thread are many Users who have the same problem.
How is that with you?
Is it not possible to adjust something in the service menu ??
Sorry for my bad English...

DönerXXL said:
Hi there.
I have the s5mini now three days.
The problem is that my friends understand me very very quietly. In the German thread are many Users who have the same problem.
How is that with you?
Is it not possible to adjust something in the service menu ??
Sorry for my bad English...
Click to expand...
Click to collapse
Hi,
also from Germany, I have the SM-G800F. I can't confirm your problems, no one complains about quiet voice problems.
Cheers!

DönerXXL said:
... text complaining about quite mic ...
Click to expand...
Click to collapse
same here.

DönerXXL said:
Hi there.
Is it not possible to adjust something in the service menu ??
Click to expand...
Click to collapse
you need to clean mic hole by needle or toothpick and problem will be solved

I also had the same problem as in the original post so I came here for complaining.
But after trying the needle suggestion above (cheers to the usasha!!) the problem got fixed!!!!
I was about to return it to be serviced, but now I'm so happy with my S5 mini
I used a thin needle and inserted it carefully for 3-4 millimeters, some lint came out.

We have exactly the same problem!
Bought phone and it went to service 3 times in a row. They've replaced everything from microphone to motherboard, even "cleared the mic hole". So, as you can see, we've replaced everything and it didn't get better.
Service even replied that the phone is working as it should. We bought it at the end of august, used it 4 days,.. other days, it was on service.

@greglord: is your last post some kind of a game with finding differences?
Usually this is with two pictures, so I find it very unique using posts instead.
Back to thread topic - I also used needle and now people hear me more clearly than before so thank you @usasha !!

I've installed sound meter from PLAY on 2 android phones my old Desire S and my new g800f. ive noticed that there is a 30dB difference the old one receiving better sound then the 1 day old g800f. sad!

usasha said:
you need to clean mic hole by needle or toothpick and problem will be solved
Click to expand...
Click to collapse
Those who took this advice can say good bye to the water resistant certificate.
All water resistant phones have bad microphone performance!

That's not entirely true, my friends immediately reported that I sounded loud and clear without asking, when I switched back from my G800F to my Xperia ZR, even without them knowing I switched phones. Maybe the sound isn't as good as a non-water resistant phone but it sure can be a lot better than my G800F.
I just got my phone back from the Samsung repair shop, after almost 2 weeks (!). But I doubt they have done anything to fix it because the screen was as smudged as when I brought it there. IIRC well the screen has to be taken out to replace anything inside the phone, or am I wrong?

How to solve this problem without loosing warranty?
I have SM-G800F with stock Android 4.4.2 updated from Samsung to the latest update I can get. Not rooted.
I have mic problem since I've bought this phone two weeks ago. People talking to me say that my voice is muffled as if I hold the phone too far from my mouth. This happens only using phone mic - if I switch to speakerphone or earphone during the call, everyone can hear me great. So, the problem is with the phone mic as if the mic level is too low .
I've searched all over the web and have realized that this is very common problem with S5 or S5 mini. As a solution, people suggest "cleaning" the mic hole which puncture the waterproof membrane of the phone and you loose warranty.
Another approach that could make progress is by editing default_gain.conf file at root /system/etc/ (more at http://forum.xda-developers.com/showthread.php?t=2777535) but for that to work you need to have root which also void warranty - correct?
Suggestions like taking out the battery or wiping the cache partition didn't make any improvement for me.
The only hope for me is hint the I've found the post (http://forum.xda-developers.com/showpost.php?p=55192014&postcount=2) on this forums suggesting raising mic level gain setting in phone service menu could solve the problem but there is no explanation how to do it. I've tried to enter the service menu using *#*#0011#*#* and then Menu -> Back -> Menu -> Input Key -> Q -> Menu -> Input Key -> 0000 but service menu doesn't appear like it should.
Any suggestions either on how to enter the service menu or some other way of solving the issue?

I had this phone like 2 days. I unsealed it. It's a nice phone but I recommend don't waste your time with it. Get rid of it you still can

Samsung S5 mini G800 microphone problem solved
Today I had a problem with the G800, the microphone doesn't work when talking about a call, but it works when recording a dictaphone.
I replaced the charging flex, but I didn't solve the problem, the microphone in the call didn't work.
Then I replaced the top microphone on the motherboard, which is used for speakerphone conversations,
and I heated audio IC WM1811GE it with hot air at 320 degrees Celsius for 20 seconds and that's it. Problem solved.
Now my S mini works perfectly, now the microphone works in a call or conversation. :good::good:
Audio IC Samsung G800
position WM1811GE Samsung G800 mainboard
Mic in mainboard (mic for speaker call)

No Audio after screen replacement

Hi,
I really need your help as I have no idea what to do.
After 1 month of using MI5 Pro Ceramic black I have broke my phone,First the touch worked and there was only vertical lines on the lcd in the spot of the shatter so I could operate but due to my stupidity and of force touching the broken glass these vertical lines started to cover all the screen (Everything worked well on the phone..Sound,Camera and etc..)
So I ordered from Aliexpress LCD + Touch screen for about 70$ (Included DHL Express shipment)
When I got the screen I started to disassamble the phone.. Got everything out,Took out the broken screen and pasted the new screen on the frame (Must say all these aliexpress screens are really bad,0% protection on the screen,Not sure about the LCD quality yet but glass is horrible..Started to scratch even before I used it)
Anyways to our point..
Started to assamble back everything.. Powered on the phone and Yay! Phone is working but...
No Sound,Firstly I checked settings and everything..Ran CIT test and everything that belongs to audio giving force close..
Calibrate Speaker PA test results : State-Get impedance failed!,Speaker Vendor-None
Vibration- FAIL no short and no long
Main mic speaker Feedback,Simulation call test,Front mic speaker feedback test,Top mic speaker feedback test,
everything when I enter it giving FC with that details :
"IlegalStateException:Unable to retrieve AudioRecord pointer for SetParameters() blablala...
Headphone mic feedback test (Called on an uninitialized AudioRecord)
So in short..
No Speaker,No Mic,No headphone Mic..
Now my question is what I need to do from now.. Its not firmware/software problem for sure as before I disassambled the phone everything worked well..
My first guess was the problem is on the Sub PCB but then I asked my self..If the USB-C is working and WiFI antenna giving full signal it means the Sub PCB works so what the hell is the problem? I really hope its not something in the PCB it self as it means throw everything to garbage.. ;<
Hope to hear suggests..
I thought to order the MI5 32GB Black version take out the Main PCB put the Pro Main PCB and put also the ceramic back cover but that I would do only if I know that the problem is from the sub PCB but if Headphone mic doesnt work (Which the Main PCB take care of) then its probably in the Main PCB??
Please help!

you didnt damage the pins on the press connector? is the press connector on the ribbon cable flush / fully inserted ? Are you sure you didnt kink the ribbon cable?
I haven't pulled a mi5 apart, but can only assume its like every other phone i have.

leighaus said:
you didnt damage the pins on the press connector? is the press connector on the ribbon cable flush / fully inserted ? Are you sure you didnt kink the ribbon cable?
I haven't pulled a mi5 apart, but can only assume its like every other phone i have.
Click to expand...
Click to collapse
The problem is that far as I understood of how the mi5 built and from how I saw it looks like..The Speaker located in the Sub PCB cover,Vibrate connected to subPCB,And all the SubPCB connected with the cable to the main PCB and I checked it connected good and no any damaged pins from what I was able to see..If there was damaged pins then the phone wont get charged as the USB-C wont be connected as it located in the SubPCB however it does work.. So I really have no idea what cause it..
Also the Headphone mic doesnt work in the tests..Anything related to Audio giving that FC with "AudioRecord" error..
I really must to know what causing it so I will know what to do ;<

Little update,
Just connected a bluetooth speaker,No any sound nothing..

Hi everyone! My MI5 has the same problems, no sound, mic, vibration, led buttons light, plugin earphones without notification's icon, can not play music, video offline and online video (Youtube, Facebook, live stream ..). It was happened when i replaced brooken screen. The first time when I turn on, evetything ok, I can play music through speaker, but now everything has gone..! Plz tell me how to slove this problem! Sorry for my poor E!

Hi, I ended up on buying the phone again... It's impossible to fix that problem as probably you did what I did and didn't place the motherboard correctly so a little bent probably happened and that cause to the problem.

edoroom said:
Hi, I ended up on buying the phone again... It's impossible to fix that problem as probably you did what I did and didn't place the motherboard correctly so a little bent probably happened and that cause to the problem.
Click to expand...
Click to collapse
Hi there! Care to elaborate a little more? I have also the same problem. I was replacing the rear camera module while the module I had received was broken to begin with. I hadn't really figured this out initially and I tried several times to attach it and test it, perhaps move the flex and retest, and at some I remember I found out the vibration was not there, but didn't pay attention to it as everything was open, until I found out the camera module was faulty in the end, and subsequently discovered also the whole issue with sound/vibration/key backlight etc. Instead of buying a new device, I was thinking to try and fix it, but still I'm a bit unsure about what the problem really was. From what I could figure, I didn't do anything different this particular time the audio/vibration didn't work, with respect to the previous times I attached and detached the motherboard. But is it definitely the board itself and not its flex connecting it to the sub-pcb? Could it be the sub-pcb itself or even both this and the board? In case I buy a new board (perhaps together with a sub-pcb just in case) to replace it which part should I watch out for, not to damage it again. Sorry for the many questions but you seem to be the only source of info for this specific problem.

deusxx said:
Hi there! Care to elaborate a little more? I have also the same problem. I was replacing the rear camera module while the module I had received was broken to begin with. I hadn't really figured this out initially and I tried several times to attach it and test it, perhaps move the flex and retest, and at some I remember I found out the vibration was not there, but didn't pay attention to it as everything was open, until I found out the camera module was faulty in the end, and subsequently discovered also the whole issue with sound/vibration/key backlight etc. Instead of buying a new device, I was thinking to try and fix it, but still I'm a bit unsure about what the problem really was. From what I could figure, I didn't do anything different this particular time the audio/vibration didn't work, with respect to the previous times I attached and detached the motherboard. But is it definitely the board itself and not its flex connecting it to the sub-pcb? Could it be the sub-pcb itself or even both this and the board? In case I buy a new board (perhaps together with a sub-pcb just in case) to replace it which part should I watch out for, not to damage it again. Sorry for the many questions but you seem to be the only source of info for this specific problem.
Click to expand...
Click to collapse
Hi sorry for late answer,I barley visit xda these times..
After I bought the MI5 again this time in the 64gb version I tested the old 128gb motherboard (The main one) and still same problem with Vibration/Sound (While all sensors work camera too)
Which means its not the sub-pcb problem,Its the main motherboard for sure,Now what cause it?
In my opinion when I pulled of the motherboard to put it on the new screen I insert it in a bad way which made it bent a little and probably the place I bent is where the audio and all the stuff goes on..
I'm pretty sure we cant really do something about that problem as problem related to motherboard it self are usually not fixable,But if you find something I will glad to get a feedback to test on my own bad motherboard so maybe I can back to the 128gb version ;| but I doubt it..

edoroom said:
Hi sorry for late answer,I barley visit xda these times..
After I bought the MI5 again this time in the 64gb version I tested the old 128gb motherboard (The main one) and still same problem with Vibration/Sound (While all sensors work camera too)
Which means its not the sub-pcb problem,Its the main motherboard for sure,Now what cause it?
In my opinion when I pulled of the motherboard to put it on the new screen I insert it in a bad way which made it bent a little and probably the place I bent is where the audio and all the stuff goes on..
I'm pretty sure we cant really do something about that problem as problem related to motherboard it self are usually not fixable,But if you find something I will glad to get a feedback to test on my own bad motherboard so maybe I can back to the 128gb version ;| but I doubt it..
Click to expand...
Click to collapse
Many thanks for the response! It sheds a little light indeed. I also ordered another phone to replace it as the cost of the motherboard seems to be equal approximately close to a new device. I'm with you, in the same view, I also once placed the motherboard quickly in the chassis without the screw that holds it together, in one of the 50 or so attempts to try and make the camera sensor I was replacing, visible to the OS, and this looseness was the unfortunate one perhaps (?). I too don't expect the sound to work again. I just wanted to double check the issue was not with the sub-pcb, which I did thanks to you. For sure I have no hopes for the mainboard to work again, but still, what keeps me from being certain it is actually the sound card that is the problem, is a very similar case I saw In a foreign forum, and also clues from my device which support the argument that the mainboard might have entered in a kind of diagnostic boot state due to a hardware fault that was apparent, where either some components are not initialized during boot, or their HW resources are taken over from the diag. ports and irqs that are enabled, in which case the issue can perhaps be fixed. For sure whenever I find a good deal on a new motherboard I will replace it, to keep it as a secondary phone, as I liked it quite a bit, but It would be interesting to see if this hypothesis holds or not. Anyway thanks again for the response!

Hi,
I've bought used mi5 with broken screen. After LCD replacement I've found that that phone has problem with sound. Exactly the same as in this thread - no sound, mic, vibration, led buttons light, plugin earphones without notification's icon, can't play music, video offline and online video (Youtube).
Someone already did LCD replacement on this phone and probably done something.
But what I discovered on this phone that problem start when battery charge aprox more then 60%.
I did flash one year old ROM via fastboot ( just to verify if it not the ROM problem) and after that everything was fine ( battery level 50%).
I did hardware test - passed 100% fine.
But when I did charge till 100% the problem come back.

That's really interesting finding... Can you tell me the same steps you did like which rom you flashed and all of that? I will check it with my dead phone maybe if I will have the same thing like you we can point on something...

mi5 lcd replaced touch not working
I bought a mi5 mobile in singapore. My display was damaged. I changed many display in india (checked in many shop). only work display (lcd). Touch not respose. please some one give solution. thank you

have same problem with op
my phone get damaged by water so im rush turn it off and open everything then go to dry it... and problem with speaker etc doesnt work just like op please help i really doesnt have money to buy new phone this month

Exactly same problem with me, just replaced the rear camera and the problem occurs
No sound, no vibration, nav led not working at all, playing video not working
Even playing sound via bluetooth speaker not working too
I believe there is something wrong with the mainboard
can anyone point out which part of the mainboard responsible for the lower board?
The lower board works well though, I tested it using other mainboard

codearm2 said:
Exactly same problem with me, just replaced the rear camera and the problem occurs
No sound, no vibration, nav led not working at all, playing video not working
Even playing sound via bluetooth speaker not working too
I believe there is something wrong with the mainboard
can anyone point out which part of the mainboard responsible for the lower board?
The lower board works well though, I tested it using other mainboard
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Click to collapse
For me the problem was that after the screen replacement (It may also apply to you after you replaced the rear camera..)
When I put back he main motherboard it wasnt sat properly,I put it beneath a small plastic holder and when I closed everything and screw and all..Problem appeared and when I rechecked motherboard I found out it got bent in the right down side and that's probably what killed all the sensors,sound and everything..
Of course that what happend to me..There is plenty of other reasons that may cause to what you experience..

edoroom said:
For me the problem was that after the screen replacement (It may also apply to you after you replaced the rear camera..)
When I put back he main motherboard it wasnt sat properly,I put it beneath a small plastic holder and when I closed everything and screw and all..Problem appeared and when I rechecked motherboard I found out it got bent in the right down side and that's probably what killed all the sensors,sound and everything..
Of course that what happend to me..There is plenty of other reasons that may cause to what you experience..
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Click to collapse
I believe the chip or something similar, that control the sensor, led, vibration etc, was broken because we put it the wrong way
now we need to find which chip it is and replace it
which part of the right down? near the signal cable?

codearm2 said:
I believe the chip or something similar, that control the sensor, led, vibration etc, was broken because we put it the wrong way
now we need to find which chip it is and replace it
which part of the right down? near the signal cable?
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Click to collapse
If you just checked and saw you put it wrong as I did,On the little plastic which made a little bent then I guess you lost..I would just buy new motherboard on aliexpress or just give up and buy a new phone..
As you cant really know (I mean from our side..) if its a chip related there or if its the bent it self which made problem on the connection on the board it self..
And yes I was speaking about the right side near the signal cable where you need to install the motherboard from that side where there is a little plastic like holding the motherboard..When I did the reinstall by not checking I put the motherboard on that plastic and after I closed everything and all screws got back I discovered that problem..

edoroom said:
If you just checked and saw you put it wrong as I did,On the little plastic which made a little bent then I guess you lost..I would just buy new motherboard on aliexpress or just give up and buy a new phone..
As you cant really know (I mean from our side..) if its a chip related there or if its the bent it self which made problem on the connection on the board it self..
And yes I was speaking about the right side near the signal cable where you need to install the motherboard from that side where there is a little plastic like holding the motherboard..When I did the reinstall by not checking I put the motherboard on that plastic and after I closed everything and all screws got back I discovered that problem..
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Click to collapse
yeah, it means it's the same mistake as mine, that little metal thing that hold the motherboard, I forgot to eject the sim card tray and when I pull my main board it was stuck, got a little bent from there
Just wonder if anyone have the schematic for mi5 mainboard, since I'm curious and want to find a way to repair it
Not because I'm in despair of needing a phone, this MI5 is my secondary phone
Just because of the curiousity, that's all
edi--
found the schematic here
https://data.dendik.id/Data/Schematic/Xiaomi/Mi5_SM.rar
now on the journey to repair this stupid mistake, lol
any help from someone who are an expert in this thing will be really appreaciated

codearm2 said:
yeah, it means it's the same mistake as mine, that little metal thing that hold the motherboard, I forgot to eject the sim card tray and when I pull my main board it was stuck, got a little bent from there
Just wonder if anyone have the schematic for mi5 mainboard, since I'm curious and want to find a way to repair it
Not because I'm in despair of needing a phone, this MI5 is my secondary phone
Just because of the curiousity, that's all
edi--
found the schematic here
https://data.dendik.id/Data/Schematic/Xiaomi/Mi5_SM.rar
now on the journey to repair this stupid mistake, lol
any help from someone who are an expert in this thing will be really appreaciated
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Click to collapse
ok bruh im already do some fking around and do ic audio replacement but no hope its still broke even my repair guy who are ex xiaomi worker are give up the problem is looks like from cpu its self but there was something interesting if u try download device info hw app in google play there was warning that the device cant read sys or something cuz it was blocked and when u look at audio chipset its was gone

feel2death said:
ok bruh im already do some fking around and do ic audio replacement but no hope its still broke even my repair guy who are ex xiaomi worker are give up the problem is looks like from cpu its self but there was something interesting if u try download device info hw app in google play there was warning that the device cant read sys or something cuz it was blocked and when u look at audio chipset its was gone
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Click to collapse
Yeah, tried it before, and the audio chip is gone
Perhaps something wrong with the audio chip, will try to replace the IC tomorrow