Mido microphone not functioning anymore. - Xiaomi Redmi Note 4 Questions & Answers

Hello to the community, i have my mido for about 2,5 years with many drops due to my job. Suddenly someting strange happened: the screen goes black randomly and comes back! Oh sh*t.. my screen is almost dead!
I had a spare parts phone from a friend and i tried the other screen.. the same thing happened. So the motherboard has a broken soldering point or something.. I said ok, no problem i have the motherboard from the other phone so let's swap them. When everyting was done i flashed with EDL mode the last official rom and i was happy that i had my phone back until the first phone call.. Microphone was dead! When i switch to speaker i can only talk to the upper one microphone in order for the other to hear me. I tried from the service menu to check it but it was dead... I changed the charging board from the other phone, the same happened.. an other spare board i had also the same.. My next idea was to do the tests with the other "broken" motherboard while the screen was on.. everything was ok. Ok lets swaps also the flex ribbon between the 2 boards.. but NOTHING!
Because of the many swaps and tests i have broken partly the 3 screw joints of the motherboard to the battery side... they are all around the motherboard "ground" so i beleve there is no problem. Is that ok?
Any other ideas? Sorry for the long post but maybe the long story help you.
Thanks!

Related

[Q] Sorry if this is in the wrong place, X10 Help?

I checked out a few other threads, on a couple forums and dont think anyone has been stupid enough to do this so far...
about 4 months ago, I was lost and my phone was dead, having bodged a car charger together I plugged it in.
The phone turned on, booted up and I got the SatNav software running, but before I could drive off it started flashing.. screen, lights, like a tiny disco....
Then it smoked, quite a lot for a second or two, by this time I'd took battery out and dis-connected the charger but it was too late, the phone was dead.
I got home, put the battery in a desktop charger til it was full and the phone has remained at it's current condition since.
So; it won't turn on, vibrate or flash any lights. The ONLY thing it does, is power up the right hand side bottom white light between the home key and back button.
I've been Ebaying since the day I killed it for a spares one, tried buying a main board but no joy anywhere without paying over £70 (and that's for a complete but knackered handset).
My dad's good with phones, his mate better also both of which said i've burnt out some chips. Some do kinda, have small 'holes' in, and I wiped a 2GB card too, wont work in anything else.
Without spending silly amounts on a new phone can I not do anything with this? Apparently everything except the main board should work (screen, digitizer etc)..
Help anyone please? -ta.
I suggest that you contact your local support team because I think this is something that needs to be examined at a repair center.
http://www.sonyericsson.com/cws/corporate/common/contact/phonelist
I dropped my X10a, and cracked the screen/digitizer. Is it easier to replace the whole housing or just the digitizer? Any suggestions on which company supplies OEM parts at the best prices?
agentJBM said:
I dropped my X10a, and cracked the screen/digitizer. Is it easier to replace the whole housing or just the digitizer? Any suggestions on which company supplies OEM parts at the best prices?
Click to expand...
Click to collapse
I've found some an i will keep looking but here is some at the bottom of my post and if you know of some please do post them here and all update this. good luck
http://forum.xda-developers.com/showthread.php?p=15712166#poststop

Touch Screen Issues....FIX needed...

Hope most of you are aware of the problem, yes the ghost touches and partial touchscreen dead(1 cm above the touch buttons mostly in my case)
this is so annoying it happens mostly wen i am in urgent need...i have read many threads but nothing seemed to be working
i am using the sprint cdma version which i got shipped from the USA to INDIA and as there is n sprint store i have to deal with this problem on my own..
i love this phone and don't wanna lose it...neither do i want to spend much
as what i have realised this is not a hardware issue.... i am having hboot 1.5
s-off and locked..every thing stock
i have tried touchscreen booster also but nothing worked....
never dropped the phone and treat it like my baby...
plz someone help me...)
regards JOBAN
i hope this gets fixed as well. i was fortunate enough to have the ghost touches once out of my 9 or 10 months of having this phone
I wonder if it is really a hardware issue because when I used some of the ICS roms it never happens.... I only notice the touch issues when I use a stock based rom.
Mine doesn't happen too often but when it does its really annoying. I've tried to take it into sprint and have them fix the screen but the screen didn't act up when I took it in.... So the sprint techs wouldn't fix anything....
yesterday i did the line draw test when the screen was giving me problem...by *#*#3424#*#*
method... and the lower part of the screen acted weird... but in d morning the screen was okay and no issues were reported not even with the line draw test...
but i know the problem will come back...
and thnx for the reply guys..)
still fix needed... idk y there is no fix for the issue when so many people are facing the problem... maybe because almost ol of them have a nearby sprint store... i don't have one coz i am in INDIA.... so help me..)
???
no help..
dj_joban said:
yesterday i did the line draw test when the screen was giving me problem...by *#*#3424#*#*
method... and the lower part of the screen acted weird... but in d morning the screen was okay and no issues were reported not even with the line draw test...
but i know the problem will come back...
and thnx for the reply guys..)
still fix needed... idk y there is no fix for the issue when so many people are facing the problem... maybe because almost ol of them have a nearby sprint store... i don't have one coz i am in INDIA.... so help me..)
Click to expand...
Click to collapse
Maybe your best bet is to either return it to where you bought it or send it in to HTC for repair... Although I can see its a bit tough shipping thins from India.
My friend had this same issue with his EVO 3D. He had to take it in to Sprint and they replaced the digitizer/lcd and bezel from another phone that was just returned. I guess if you are in India, you could look online to see how much one would cost to get shipped in.
Sent from my PG86100 using xda premium
same problem, i too from india. i also got an spare touchscreen, but from fews day problem has not arisen.
btw, my friend just open my phone for changing touch screen, but was unable to change it, but what he has done is tighten the touch screen cable.
now i am not facing any issue. though its just an week. i am testing it.
tnx fo reply
Yea shipping is a major issue here in India... And HTC don't just replace the digitizer,the whole assembly costs 170 $ (converted from Indian rupees around 8000) ...so if nothing woods ill buy a digitizer from eBay.....
And tightened cable sounds good... But let's see if that works..
Maybe the problem is you and not your phone Cheerz!
hello joban,
I got your pm i thought it would be better to post here,
I was getting this ghost problem very frequently. It was like in every 15 to 30 minutes. I tried various roms but moreover it was more in sense.
I was very annoyed as i also have a small white spot.
so, i thought digitizer is an issue. I order one digiter from ebay. its took around 2 months to reach india. I was having a spare fascinate so i kept evo 3d aside till that time.
as i got my digitizer,
i gone to my friend, he is having a mobile shop, i told him that there is some touch problem so i need to change the digitizer. so, he opened my phone,then he disconnect all the cables (Which are very delicate tell him that that connecter will unlock from white side not from the brown side. as the connecter are of two colors brown from the back side and white from the front side.)
after that motherboard got separated. Lower part he said that it is very delicate as its will be difficult to assemble it back. He referred me to some other dude who can do that. he repair phones but basic phones & chinese phones.
he asked me the exact issue, i told me phone behaves weirdly. He said this problem is not with the touchscreen. something else is the problem.
he told me as if touchscreen problem arise it will not work or a specific part will not work.
now. he connected my motherboard back. tighten it. and told me to check.
LOL as this problem is not frequently.
I told him i will test it and let you know. He suggested as if in case problem arises again, he will just hot air the touch screen connecter area and nearby component.
(mann mein toh doubt rehta hi hai yaar , abhi bhi saala tension hai soch raha hu fatafat nikal dallu )
but believe me its been more then a week. I have not faced this issue yet. I am on viper rom, stock kernel. also uncheck on off crt animation as i have seen its having bit problem with sense. and sometimes it act weirdly due to which touch doesnt response, you need to lock and unlock again.
LOL my spare touchscreen is eating dust now.
have you tried calibrating it with the htccalibrate app?
stevestone said:
hello joban,
I got your pm i thought it would be better to post here,
I was getting this ghost problem very frequently. It was like in every 15 to 30 minutes. I tried various roms but moreover it was more in sense.
I was very annoyed as i also have a small white spot.
so, i thought digitizer is an issue. I order one digiter from ebay. its took around 2 months to reach india. I was having a spare fascinate so i kept evo 3d aside till that time.
as i got my digitizer,
i gone to my friend, he is having a mobile shop, i told him that there is some touch problem so i need to change the digitizer. so, he opened my phone,then he disconnect all the cables (Which are very delicate tell him that that connecter will unlock from white side not from the brown side. as the connecter are of two colors brown from the back side and white from the front side.)
after that motherboard got separated. Lower part he said that it is very delicate as its will be difficult to assemble it back. He referred me to some other dude who can do that. he repair phones but basic phones & chinese phones.
he asked me the exact issue, i told me phone behaves weirdly. He said this problem is not with the touchscreen. something else is the problem.
he told me as if touchscreen problem arise it will not work or a specific part will not work.
now. he connected my motherboard back. tighten it. and told me to check.
LOL as this problem is not frequently.
I told him i will test it and let you know. He suggested as if in case problem arises again, he will just hot air the touch screen connecter area and nearby component.
(mann mein toh doubt rehta hi hai yaar , abhi bhi saala tension hai soch raha hu fatafat nikal dallu )
but believe me its been more then a week. I have not faced this issue yet. I am on viper rom, stock kernel. also uncheck on off crt animation as i have seen its having bit problem with sense. and sometimes it act weirdly due to which touch doesnt response, you need to lock and unlock again.
LOL my spare touchscreen is eating dust now.
Click to expand...
Click to collapse
Hi,
Could you please help me with any mobile repairers in Mumbai/Pune who can fix broken touchscreens? My Einstien brain managed to cut the flex cable to touchscreen and its now not responding at all. I'm using Tinji i9300 mt6577 chinese phone. Reuqest your help plz. Thanks.

Water Damaged Z2.. Trying to fix it!

Hello.
So to make a veeeery long story short, the phone leaked water in a lake at about 0.5 meters depth after a minute or two with flaps definitely closed (checked 5-10 times before submersion). The screen then flickered and died.
Phone gets sent away to a service center, tested and results unsurprisingly say its watertight so must be user fault. Sony and service provider refuse to help me in any way to fix the broken phone, so basically they say i have to pay it as normal (it was 4 weeks old at time of damage).
I received the phone back after countless phone calls to sony and service provider trying to get them to take responsibility, especially sony, but to no avail.
So now im trying to fix it myself. I took the phone apart, and the screen connector at the bottom was fried as expected. I bought a new screen and flex connector cable but still my screen wont show. The touchscreen works perfect, and so does the phone. When i connect it to my tv via MHL it works flawlessly. Every function including the new touchscreen works perfect, just that the screen is black on the device.
Am i missing something?? I really want to get this working so i can say IN YOUR FACE to this stupid company SONY. Im thinking the only thing it could be now is some faulty component on the mainboard regarding screen output, seems strange though that everything works perfect via MHL, especially the touchscreen.
Anybody have any ideas? Would be greatly appreciated if anyone can share similar experiences!
Cheers, Vincent from Sweden.
i
vinnibinni said:
Hello.
So to make a veeeery long story short, the phone leaked water in a lake at about 0.5 meters depth after a minute or two with flaps definitely closed (checked 5-10 times before submersion). The screen then flickered and died.
Phone gets sent away to a service center, tested and results unsurprisingly say its watertight so must be user fault. Sony and service provider refuse to help me in any way to fix the broken phone, so basically they say i have to pay it as normal (it was 4 weeks old at time of damage).
I received the phone back after countless phone calls to sony and service provider trying to get them to take responsibility, especially sony, but to no avail.
So now im trying to fix it myself. I took the phone apart, and the screen connector at the bottom was fried as expected. I bought a new screen and flex connector cable but still my screen wont show. The touchscreen works perfect, and so does the phone. When i connect it to my tv via MHL it works flawlessly. Every function including the new touchscreen works perfect, just that the screen is black on the device.
Am i missing something?? I really want to get this working so i can say IN YOUR FACE to this stupid company SONY. Im thinking the only thing it could be now is some faulty component on the mainboard regarding screen output, seems strange though that everything works perfect via MHL, especially the touchscreen.
Anybody have any ideas? Would be greatly appreciated if anyone can share similar experiences!
Cheers, Vincent from Sweden.
Click to expand...
Click to collapse
explain more about phone instead of situation and problem with service center
the touch panel is ok but display is died!
but the phone can boot with another display?!
Geeks Empire said:
explain more about phone instead of situation and problem with service center
the touch panel is ok but display is died!
but the phone can boot with another display?!
Click to expand...
Click to collapse
Hello.
The phone has booted ever since it got water damaged, even with the bad screen. Yes the touch panel works perfect but no display, and i can see and use everything on the phonebon my tv via mhl cable. I even updated firmware whilst using mhl to see if it would help but still no picture on the device.
I have replaced the touch screen and the flex ribbon cable that connects screen to mainboard. I have also removed mainboard and cleaned it with 95% alcohol incase some water or dirt causing a short circuit somewhere.
The mainboard looks fine, and everything works apart from the visual screen. Nothing is overheating. Im really baffled as to what could be wrong, but it surely must be something on the mainboard?
i
vinnibinni said:
Hello.
The phone has booted ever since it got water damaged, even with the bad screen. Yes the touch panel works perfect but no display, and i can see and use everything on the phonebon my tv via mhl cable. I even updated firmware whilst using mhl to see if it would help but still no picture on the device.
I have replaced the touch screen and the flex ribbon cable that connects screen to mainboard. I have also removed mainboard and cleaned it with 95% alcohol incase some water or dirt causing a short circuit somewhere.
The mainboard looks fine, and everything works apart from the visual screen. Nothing is overheating. Im really baffled as to what could be wrong, but it surely must be something on the mainboard?
Click to expand...
Click to collapse
I got same issue on Galaxy S4 but that wasn't water proof so this type of damage was normal for it.
have u tried ur display on another board?
- as Sony said it was user fault... after phone get wet have u tried to dry it with heat?
+ as i read the warranty agreements when u open phone by urself or others (non official center) it will void the warranty.
anyway If ur display not working with another board so thr is problem in display panel and not anything on board.
Please Inform me if u got any info or result of this damage
Thanks
:good:
Geeks Empire said:
I got same issue on Galaxy S4 but that wasn't water proof so this type of damage was normal for it.
have u tried ur display on another board?
- as Sony said it was user fault... after phone get wet have u tried to dry it with heat?
+ as i read the warranty agreements when u open phone by urself or others (non official center) it will void the warranty.
anyway If ur display not working with another board so thr is problem in display panel and not anything on board.
Please Inform me if u got any info or result of this damage
Thanks
:good:
Click to expand...
Click to collapse
Yes the phone is thoroughly dried out. I only opened the phone after i had received it back from sony service. They said it wasnt covered by warranty because it was water damaged and was caused by the user (even though both water indicators behind the 2 flaps are still white and not been exposed to water), and they said that they never repair water damaged phones.
Thats why i decided to open it and try to fix it myself, i had nothing (more) to lose!
I havent tried the new display on another board, thats exactly what i want to do but cant get hold of a new board. I've even been taking apart previous smartphones to see if the display can be connected to it somehow just so i can confirm it works. But the probability is that it does work, as the first "broken" screen worked in the same way as this one, touchscreen fine but no display. Thats why i changed the flex cable also, i thought it must be that when the mainboard seems to be doing everything else perfectly.
Does the problem have to be in one of those 3 components? Screen, flex cable, mainboard, or have i missed something?
Thanks
vinnibinni said:
Yes the phone is thoroughly dried out. I only opened the phone after i had received it back from sony service. They said it wasnt covered by warranty because it was water damaged and was caused by the user (even though both water indicators behind the 2 flaps are still white and not been exposed to water), and they said that they never repair water damaged phones.
Thats why i decided to open it and try to fix it myself, i had nothing (more) to lose!
I havent tried the new display on another board, thats exactly what i want to do but cant get hold of a new board. I've even been taking apart previous smartphones to see if the display can be connected to it somehow just so i can confirm it works. But the probability is that it does work, as the first "broken" screen worked in the same way as this one, touchscreen fine but no display. Thats why i changed the flex cable also, i thought it must be that when the mainboard seems to be doing everything else perfectly.
Does the problem have to be in one of those 3 components? Screen, flex cable, mainboard, or have i missed something?
Thanks
Click to expand...
Click to collapse
Yes, it should be those factors. From what you have stated, its most probably the connector on the main board. Before you make more purchases, try to take it to a shop and ask them to test the screen on another phone, so you can see if its the screen or not. It MIGHT be a faulty flex cable that you just purchased, hopefully, since its the cheaper solution. I actually bought one in ebay that was water damaged, changed the screen, middle frame and flex cable, and have a brand new refurbished Z2, good for me the main board was intact. I would take the board out, wash it with 95% alcohol again with a soft toothbrush to brush impurities off the connector piece. Then spray it a little with electrical spray and leave it in rice to thoroughly dry out overnight and try all the connections again. Look through the main board with a magnifying glass and see if anything obvious burned out, the smallest connection can cause problems.
If all fails, then take it to a shop to test the screen or the main board, hopefully they are friendly enough to do it.
Good luck buddy. :good:
elbello said:
Yes, it should be those factors. From what you have stated, its most probably the connector on the main board. Before you make more purchases, try to take it to a shop and ask them to test the screen on another phone, so you can see if its the screen or not. It MIGHT be a faulty flex cable that you just purchased, hopefully, since its the cheaper solution. I actually bought one in ebay that was water damaged, changed the screen, middle frame and flex cable, and have a brand new refurbished Z2, good for me the main board was intact. I would take the board out, wash it with 95% alcohol again with a soft toothbrush to brush impurities off the connector piece. Then spray it a little with electrical spray and leave it in rice to thoroughly dry out overnight and try all the connections again. Look through the main board with a magnifying glass and see if anything obvious burned out, the smallest connection can cause problems.
If all fails, then take it to a shop to test the screen or the main board, hopefully they are friendly enough to do it.
Good luck buddy. :good:
Click to expand...
Click to collapse
Sounds like good advice elbello
Good to know that you have managed to fix a water damaged Z2 using the same mainboard, hopefully i can have the same luck.
So you think it could be the flex cable? Are they known to break easily?
I have already cleaned the board twice with alcohol, maybe using electrical spray might help, and i will check it with a magnifying glass aswell.
Hopefully i can find a shop that will test the screen for me, but this is Sweden, the place where no favours are done, and where everything has to be sent away and fixed by professionals!
Thanks for the replys guys
I have just checked the whole mainboard with a magnifier, and found no oxidation anywhere. I found quite a bit of dirt in some places, and i have once again cleaned the screen connector with 95% alcohol and also the other side of the board behind the screen connector. I dont have any electrical spray at this time so cant test with that.
Another thing i have realised is that there is visual damage to two contact points that are located at the bottom of the phone, very close to where the flex cable connects to the lcd screen. What are these two contacts for, and could they be causing the problem? I will attach an image of them.
Thanks.
vinnibinni said:
I have just checked the whole mainboard with a magnifier, and found no oxidation anywhere. I found quite a bit of dirt in some places, and i have once again cleaned the screen connector with 95% alcohol and also the other side of the board behind the screen connector. I dont have any electrical spray at this time so cant test with that.
Another thing i have realised is that there is visual damage to two contact points that are located at the bottom of the phone, very close to where the flex cable connects to the lcd screen. What are these two contacts for, and could they be causing the problem? I will attach an image of them.
Thanks.
Click to expand...
Click to collapse
From that picture, I dont think that affects the screen at all. Bad thing is you cant try the two pieces you bought with another board so you can narrow the problem down.
I doubt the electrical spray will make wonders, it just good to clean dirt and make the contacts react better after oxidation, but if you state they are clean...
Think your only options is to consider it a loss, sell it in ebay for parts and stuff, or try getting a new flex and see if it was that, but if it wasnt, its like throwing money away. I would say the same for the screen, but those go for $100+ easily.
elbello said:
From that picture, I dont think that affects the screen at all. Bad thing is you cant try the two pieces you bought with another board so you can narrow the problem down.
I doubt the electrical spray will make wonders, it just good to clean dirt and make the contacts react better after oxidation, but if you state they are clean...
Think your only options is to consider it a loss, sell it in ebay for parts and stuff, or try getting a new flex and see if it was that, but if it wasnt, its like throwing money away. I would say the same for the screen, but those go for $100+ easily.
Click to expand...
Click to collapse
Yea i was thinking about selling it for parts, but its not really worth much without a working mainboard. I will probably just keep it and wait till i can get hold of a new board. How much do you think a new board would cost? I cant find one anywhere at the moment when searching on ebay/google.
Wish i had access to a working board for testing
Hello,
I have the same problem ... black screen on the tv works perfectly, xperia z2 also drowned after 10 seconds under water .... someone back to life solved the screen, that you have replaced?
best regard.
Oscar
vinnibinni said:
Yea i was thinking about selling it for parts, but its not really worth much without a working mainboard. I will probably just keep it and wait till i can get hold of a new board. How much do you think a new board would cost? I cant find one anywhere at the moment when searching on ebay/google.
Wish i had access to a working board for testing
Click to expand...
Click to collapse
Hello ..... no answer .....
I'll buy on aliexpress touch screen digitizer to replace it, anyone know if the screen will return to work? I have to replace more parts? thank you ...
Best Regard
Oscarrrr
Hello,
I'm now in the exact same position.
Water damaged, Touchscreen is still working I can enter recovery any press stuff but no display only shows black.
Had my screen replaced in a shop here but same problem prevails.
They told me to replace Mainboard 3500 THB.
But they didnt have one right then.
He could fix it?
vinnibinni said:
Yea i was thinking about selling it for parts, but its not really worth much without a working mainboard. I will probably just keep it and wait till i can get hold of a new board. How much do you think a new board would cost? I cant find one anywhere at the moment when searching on ebay/google.
Wish i had access to a working board for testing
Click to expand...
Click to collapse
he could you solve your problem? It happens to me the same with a z2 . I board bought new eh and the problem persists . you could help me?
Thinking of buying a used z2 with intermittent touchscreen issues. It works but seems to be intermittent it either takes multiple taps to work or it goes mad like your pressing the keys could this be down to water damage or possibly just a software issue and need re-flashing a ftf by clean install it's a totally stock z2 in mint condition for £50
[email protected] said:
Thinking of buying a used z2 with intermittent touchscreen issues. It works but seems to be intermittent it either takes multiple taps to work or it goes mad like your pressing the keys could this be down to water damage or possibly just a software issue and need re-flashing a ftf by clean install it's a totally stock z2 in mint condition for £50
Click to expand...
Click to collapse
It's probably hardware problem. Trust me, ghost touches make people go crazy,so don't buy it.
Sent from Xperia Z2
Luckily not from an iPhone = Yesterdays technology at tomorrows prices
Ghost touches are a digitizer problem right?
You can buy a new one for about 30-50$
Gesendet von meinem LENNY2 mit Tapatalk
Haldi4803 said:
Ghost touches are a digitizer problem right?
You can buy a new one for about 30-50$
Gesendet von meinem LENNY2 mit Tapatalk
Click to expand...
Click to collapse
Probably yes, but replacing it isn't so easy these days.
Sent from Xperia Z2
Luckily not from an iPhone = Yesterdays technology at tomorrows prices
try this : http://www.mobilerdx.com/2014/10/sony-xperia-z2-display-light-working-problem-solution.html
or this : http://gsm-friends.blogspot.co.id/2015/05/sony-xperia-z2-display-light-ic.html

Please help with a possible S6 repair con.

Please can anybody with experience of galaxy s6 repair help.
A couple of weeks ago I turned of my s6 one night, next morning I tried to turn it on but it wouldn't, it was completely unresponsive, black screen no lights, the phone has never been dropped or damaged in anyway or been anywhere near water.
When it was switched off the battery was almost fully charged, so I knew it wasn't a dead battery but I tried the charger anyway. There was no charging light and the back of the phone near the rear camera got quite hot within a couple of minutes. I tried a soft reset but it didn't work.
So then I took it to a local phone shop for repair. The guy in the shop said that he'll send the phone of the workshop for a diagnostic. Anyway he called up and said the motherboard is faulty and needed to replaced. Now he phoned up again and the guy who is fixing the phone is now saying the screen also needs to be replaced, apparently the backlight is not working. Now I know amoled screens do not have any backlight, so I asked him what exactly is wrong with the screen as it's a amoled screen it doesn't have a back light, he said he doesn't know just the engineer said the backlight doesn't work. He said the repair would cost £149.
My question can a faulty motherboard damage the screen? is he what he is saying plausible or is he trying a con?
Thanks in advance for any reply's.
bossrat45 said:
Please can anybody with experience of galaxy s6 repair help.
A couple of weeks ago I turned of my s6 one night, next morning I tried to turn it on but it wouldn't, it was completely unresponsive, black screen no lights, the phone has never been dropped or damaged in anyway or been anywhere near water.
When it was switched off the battery was almost fully charged, so I knew it wasn't a dead battery but I tried the charger anyway. There was no charging light and the back of the phone near the rear camera got quite hot within a couple of minutes. I tried a soft reset but it didn't work.
So then I took it to a local phone shop for repair. The guy in the shop said that he'll send the phone of the workshop for a diagnostic. Anyway he called up and said the motherboard is faulty and needed to replaced. Now he phoned up again and the guy who is fixing the phone is now saying the screen also needs to be replaced, apparently the backlight is not working. Now I know amoled screens do not have any backlight, so I asked him what exactly is wrong with the screen as it's a amoled screen it doesn't have a back light, he said he doesn't know just the engineer said the backlight doesn't work. He said the repair would cost £149.
My question can a faulty motherboard damage the screen? is he what he is saying plausible or is he trying a con?
Thanks in advance for any reply's.
Click to expand...
Click to collapse
A faulty motherboard can damage the screen (in various ways). All screens have backlight (except for screens like the old Nokia 3310 had) so the layers of your screen might be damaged or have leaked since there is a fluid "sticking" the layers together. This is (obviously) not a software problem, but I would like to know if you were rooted, had any custom ROMs/kernels and did you have XPosed installed. How did you root and did you have a custom recovery?
All my statements are afaik (as far as I know) and based upon real life experiences, if anything I wrote is wrong, feel free to correct me as we are all learning .
Thanks for the reply, I hadn't rooted the phone, all I had done was replace the vodafone firmware to stock firmware as I was no longer on vodafone and wanted to remove all the bloatware, but that was many months ago and everything was working fine.
I just find it odd that a perfectly working phone can be damaged so badly for no obvious reason, it wasn't plugged into the charger, I just turned it off one night put it on my desk, tried to turn it on next morning and it was dead.
So does the repair seem legit to you? I am just a bit weary as I know how easy it would be to charge for parts that aren't necessary. Also is there anyway I could check if the screen has really been changed as the display on my phone was in perfect condition, not a single mark or scratch or any thing to identify it against a brand new screen.
bossrat45 said:
Thanks for the reply, I hadn't rooted the phone, all I had done was replace the vodafone firmware to stock firmware as I was no longer on vodafone and wanted to remove all the bloatware, but that was many months ago and everything was working fine.
I just find it odd that a perfectly working phone can be damaged so badly for no obvious reason, it wasn't plugged into the charger, I just turned it off one night put it on my desk, tried to turn it on next morning and it was dead.
So does the repair seem legit to you? I am just a bit weary as I know how easy it would be to charge for parts that aren't necessary. Also is there anyway I could check if the screen has really been changed as the display on my phone was in perfect condition, not a single mark or scratch or any thing to identify it against a brand new screen.
Click to expand...
Click to collapse
Hmmm, okay.
If you have the right tools you can probably make a mark with a marker or something that won't damage the screen and then when they "replace" it you can check if it is still there. By the way, I don't mean on the screen but on that metal part on the underside of the screen. If you don't want to make such a thing because you maybe don't have the necessary tools, make a tiny scratch that you can locate but won't affect using the phone or not visible unless you really take a close look. If you don't want to do that you can take it to an official Samsung retailer or send it to them (this is probably the most recommended option).
Unfortunately the phone already at the repair shop, I got a call a few days ago telling me that the logic board was damaged and needed to be replaced, I agreed to that repair, now he called again today and said the display also needs to be changed. That's why I'm a bit suspicious, I can understand how the motherboard maybe faulty and may have died, but the display also? maybe he damaged the display when trying to change the motherboard or he's charging for unnecessary work or maybe he's telling the truth and the faulty motherboard killed the display, I don't know.
I was wondering if there's something in the firmware which keeps count of the number of times a part has been replaced or how long the display has been used for or a way I can check the date of the display manufacture without opening the phone.
bossrat45 said:
Unfortunately the phone already at the repair shop, I got a call a few days ago telling me that the logic board was damaged and needed to be replaced, I agreed to that repair, now he called again today and said the display also needs to be changed. That's why I'm a bit suspicious, I can understand how the motherboard maybe faulty and may have died, but the display also? maybe he damaged the display when trying to change the motherboard or he's charging for unnecessary work or maybe he's telling the truth and the faulty motherboard killed the display, I don't know.
I was wondering if there's something in the firmware which keeps count of the number of times a part has been replaced or how long the display has been used for or a way I can check the date of the display manufacture without opening the phone.
Click to expand...
Click to collapse
Unfortunatly, no,but if the phone is working after the repair that means it is fixed! If not, they will give you a replacement since they test everything to make sure it works.

Microphone issues with Redmi Note 3 Pro

Hello, so I bought this phone with a broken screen and also was told the microphone sometimes does not work. I searched about it and seemed like its a software issue so figured once I fix it and install Lineage OS issue will be gone. Unfortunately it persists, and I noticed that by pressing hard it works. Close to ordering a new part with the microphone I noticed the small contacts under the board, bent those and it started to work, but only for a day, now not working again. I am not sure if a new board is gonna help, anyone else had the same issues, is it the microphone board or a problem in the mainboard or cables? I am close to stop throwing money on this and not getting it to work, already bought the screen and back cover.
Edit. I gave it another try, took it apart, brushed the contacts and rib cable contacts with alcohol, works very well again, time will tell for how long.
Edit2. Stopped working again, if I plug in the charger and move the cord a bit it starts to work, but every time I unplug stops working. Decided to put in the final 5€ for a new board and see if helps, fingers crossed..
Hey! So what happened after you changed the mic board, is it working fine?
P.S. sorry for replying to this 6 months late but I am also having the same problem with one of my phones.
flash agni kernel.it has solved my problem

Categories

Resources