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
Click to expand...
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..
Click to expand...
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?
Click to expand...
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..
Click to expand...
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
Click to expand...
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
Click to expand...
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
I got my Mi Mix from China/HK (not sure which) from NIS-store in November. The phone has been glorious with the exception of the fingerprint reader.
I enter my fingerprint, one finger, whether once or multiple times, the result is the same. Immediately afterwards it reads well, a couple of hours later it's hit and miss. Half a day later it will not read my fingerprint at all. I've flashed every ROM, BL unlocked, installed TWRP, rooted and installed EU ROM. Cleared cache, davik and user data. I used water and a soft cloth to wipe the fingerprint reader and washed my hands until they're raw.
To compare, I recently bought the US version of the Huawei Mate 9. This phone has lots of problems and is going back, but the fingerprint reader is 99% accurate.
1) Anyone else have this issue and how have you addressed? (I contacted the seller who supposedly, by default, offer a one year warrantly. I am dubious.
2) Anyone know of a repair shop, US or China/HK that might be able to repair this?
Any input is appreciated.
audscott said:
I got my Mi Mix from China/HK (not sure which) from NIS-store in November. The phone has been glorious with the exception of the fingerprint reader.
I enter my fingerprint, one finger, whether once or multiple times, the result is the same. Immediately afterwards it reads well, a couple of hours later it's hit and miss. Half a day later it will not read my fingerprint at all. I've flashed every ROM, BL unlocked, installed TWRP, rooted and installed EU ROM. Cleared cache, davik and user data. I used water and a soft cloth to wipe the fingerprint reader and washed my hands until they're raw.
To compare, I recently bought the US version of the Huawei Mate 9. This phone has lots of problems and is going back, but the fingerprint reader is 99% accurate.
1) Anyone else have this issue and how have you addressed? (I contacted the seller who supposedly, by default, offer a one year warrantly. I am dubious.
2) Anyone know of a repair shop, US or China/HK that might be able to repair this?
Any input is appreciated.
Click to expand...
Click to collapse
Have you been facing this issue since November or have you just noticed this recently?
Before you send it out for repair, have u tried registering multiple fingers other than just your index fingers?
Can you also ask a friend or someone close, to try the fingerprint sensor. This is very unlikely, but I've heard that some fingerprint sensors aren't capable of scanning every type of fingerprint. While some people have very clear pattern\ridges on their fingerprints, it may be faint for others.
This is why I am suggesting that you ask a friend to test the sensor. This way you can make sure that it is the sensor itself which is defective.
I appreciate your response.
This has been ongoing since I received the device. I've never been able to, reliably, use the fingerprint scanner and count on activating my phone without the real possibility of having to use my pin.
The Mate 9 is the only fingerprint reader that has consistently worked. My note (4 or 5?) just wouldn't do the job and my V20 is just flaky (I guess I'm the flaky one, with so many phones).
I'll start out, renewed, with other fingers, then, if nt successful, get my wife to try the fingerprint reader.
Anyone else have additional suggestions, or email of a repair shop?
audscott said:
I appreciate your response.
This has been ongoing since I received the device. I've never been able to, reliably, use the fingerprint scanner and count on activating my phone without the real possibility of having to use my pin.
The Mate 9 is the only fingerprint reader that has consistently worked. My note (4 or 5?) just wouldn't do the job and my V20 is just flaky (I guess I'm the flaky one, with so many phones).
I'll start out, renewed, with other fingers, then, if nt successful, get my wife to try the fingerprint reader.
Anyone else have additional suggestions, or email of a repair shop?
Click to expand...
Click to collapse
From what you say, it looks like the pattern of your fingerprint may be faint or hard to read compared to others. Because the other phones you mentioned like the Note 5 and V20 have really good fingerprint sensors. The Note 4 had a slow swipe-type sensor, so that has been a pain for me as well.
And the Mate 9 may have an excellent sensor or maybe its just the material on the surface of the Mate 9's sensor. Some glass sensors tend to attract even the slightest of moisture or sweat. I've noticed that the sensor of the Mix does this.
See if your partner's fingerprints work fine with the device. In that case, you can rule out that its a defective sensor.
And regarding repairs, I haven't seen any actual spares for the Mix due to the limited production of the device. So I doubt you'll find any repair shops that has parts to service the Mix.
Your best bet would be to send it to the seller for warranty.
Just so anyone interested will know, it's my faulty right index finger. After nearly 8 hrs using my left index finger and not a singe missed scan. I don't know what to think, except thanks to satishp for the insight and supportive words.
I had a problem in which my sensor crashed. I thought it was a hardware problem but a factory reset completely fixed the problem for me. If your device has ongoing issues across multiple ROMs, it is most likely a hardware caused issue.
audscott said:
Just so anyone interested will know, it's my faulty right index finger. After nearly 8 hrs using my left index finger and not a singe missed scan. I don't know what to think, except thanks to satishp for the insight and supportive words.
Click to expand...
Click to collapse
Glad that I could be of help. Its good to know that the sensor isn't defective and you don't have to send it for warranty anymore. It would have been a hassle to ship your phone to China and not knowing when\if the seller would send it back.
Cheers!
The mod for this function did not disable it for me
So, the screen on my Note 4X broke, and I wanted to replace it. Long story short, the battery is glued down hard as **** and I managed to damage it, and it burst into flames. I'm fine, I was prepared, nothing but the phone suffered any damage.
But now I'm sitting here, with a phone that's basically still fine minus the frame and the battery, and I still want to repair it.
I'm faced with two questions, first of all, I managed to find (I think) every part I need, but one eludes me. I don't even know what it's for. You can see it here (minute 9:11-9:27):
https://youtu.be/MQazwoEssN0?t=556
It says "C6_LEDFPC_V1.0" on mine. Google tells me nothing about that, and it's not a part I have seen on the repair shop sites. It doesn't even seem to be present on complete frame+display assemblies like this one:
https://www.aliexpress.com/item/LCD...edmi-Note-4X-hongmi-Red-Rise/32810566637.html
And apart from that, I wonder if I missed any part.
I still have:
A new display+digitizer, the back cover, the mainboard with the SoC and the two cameras, the PCB with the charging board, the battery cable, the sim tray, the fingerprint reader, the loudspeaker.
I need:
A new frame, an earpiece, the mainboard flex cable, the side key flex cable, a battery, and the one mysterious piece.
Is that everything? Does everyone has a basic list of all the parts?
anon768 said:
So, the screen on my Note 4X broke, and I wanted to replace it. Long story short, the battery is glued down hard as **** and I managed to damage it, and it burst into flames. I'm fine, I was prepared, nothing but the phone suffered any damage.
But now I'm sitting here, with a phone that's basically still fine minus the frame and the battery, and I still want to repair it.
I'm faced with two questions, first of all, I managed to find (I think) every part I need, but one eludes me. I don't even know what it's for. You can see it here (minute 9:11-9:27):
https://youtu.be/MQazwoEssN0?t=556
It says "C6_LEDFPC_V1.0" on mine. Google tells me nothing about that, and it's not a part I have seen on the repair shop sites. It doesn't even seem to be present on complete frame+display assemblies like this one:
https://www.aliexpress.com/item/LCD...edmi-Note-4X-hongmi-Red-Rise/32810566637.html
And apart from that, I wonder if I missed any part.
I still have:
A new display+digitizer, the back cover, the mainboard with the SoC and the two cameras, the PCB with the charging board, the battery cable, the sim tray, the fingerprint reader, the loudspeaker.
I need:
A new frame, an earpiece, the mainboard flex cable, the side key flex cable, a battery, and the one mysterious piece.
Is that everything? Does everyone has a basic list of all the parts?
Click to expand...
Click to collapse
I've been thinking that in the video, the guy switched on the phone without that part. so that part shouldn't be a very major component. In my opinion, it can be some sort of sensor. I personally feel its a magnet screen sensor for covers with smart wake up function.
The reason I say this is because when i touch a small magnet on the entire front panel, It gets stuck on that same point.
However I am not very sure as the smart wake is not triggered. Maybe it is because I am on LineageOS.
Hope It turns out helpful.
You will probably need the vibrator motor too, its quite small and easy to lose as I've found.
one like this:
link
That part is the LED for the capacitive buttons. Not important at all if you cant find it
Hey guys,
So I've personally owned this device before and sold it, however, luckily I was looking about on Craigslist and managed to run into a post where this lady was selling her Midnight 128gb OP3T for $10 due to the wifi not working. The phone is literally spanking new and the only thing I can think of is water damage. She said the wifi suddenly stopped working and spoke with OnePlus Tech support and wasn't going to pay $275 to fix it so she just wanted it gone. So I figured whats there to lose, right? I went home performed a factory reset on the phone and the wifi actually was working. Then I realized it's intermittently working. I found that out because after sometime it suddenly disables itself and I have to sleep the device for like two minutes and it'll kick back on. The proximity sensor is also dead too. I did the *#808# to test the sensor and nothing is generated. These are the only real issues this phone has. The loud speaker also sounds a bit off... I'm sure I could easily replace that too.. It could just be me. I've posted the snapshot of the proximity sensor test. The wifi was currently working when I took that snapshot and like I said it's a hit or miss.
I haven't gotten into the device just yet, however, I'm planning to check the water damage sticker once I do as that is my suspicion. I'm waiting on my tool set I ordered on Amazon at the moment. My question is, do you think replacing the wifi antenna cable will fix the wifi connectivity issue? The phone is currently on 8.0 Oreo and I haven't tried performing a complete reset/restore so I'm not sure that could be a fix. Also the phone doesn't get too hot and usually with water damaged devices the phone typically overheats pretty fast due to corrosion. I guess I'll find out after I open the device, but for now do you guys have any other suggestions? I've heard of the whole IPv6 intermittent wifi issues and can assure I have IPv6 disabled.
Thanks for taking the time to read my question!
The WIFI thing isn't something I think you can just replace, I think you would just need to replace the board right?
Yes, you would need to replace the mainboard of the phone. However 10$ is quite cheap for a spare screen and midnight black metal casing. Just find a cheap 3T with broken screen and switch mainboard with that one and you have a working phone. [emoji16]
Before doing that, check the phone's board and look for corrosion. If you find any, try cleaning it up gently, with some alcohol and if you manage to get it all cleaned up, try testing it again to see if it solves the problem.
If you get the schematic for this device and have a boardview program you could find the wifi circuitry..... it is more than likely some short to ground due to the fact that you are feeling heat.... due to liquid damage or not. Sometimes changing a small component can fix the issue but you need a microscope, heat gun, solder pencil, etc......