yashsingh1/xdaforums huggingface dataset:
[POCO M3 Questions & Answers] jyaki2:
Thank you, this mention of using cotton bud and band helps drain the battery faster so i can reboot the phone.
[POCO M3 Questions & Answers] Ai_Compare:
Mr. sarabbafrani Hello，I am very happy to hear that you have successfully repaired 100+ machines, I would like to ask you which part of the motherboard is damaged by this problem, and which repair procedure is what, is it convenient to inform everyone?
[POCO M3 Questions & Answers] gasleak08:
do guys have firehose ? i needed to flash
[POCO M3 Questions & Answers] sergej_7:
according to other users on the internet it's pmic that is faulty. only a repair or complete exchange will get rid of the problem forever otherwise discharge method is the only way to reboot affected devices. I'm currently awaiting the first warranty repair and will report which batch i will receive or if the service center will repair the motherboard. as soon as i get more information on the matter i will share it here. we can only hope that xiaomi will start a replacement program for this defect since this is clearly a manufacturing problem.

Note: you can open the transcript on youtube and hide the time stamps then you can translate everything in deepl if you want to quickly understand what the guy is talking about.
[POCO M3 Questions & Answers] sarabbafrani:
no pmic also motherboard is healthy do not attack your MB. :))

i will post the fix just wait
[POCO M3 Questions & Answers] gasleak08:
now my phone boot up now from hardbrick
[POCO M3 Questions & Answers] cloudonthesky:
I think you are a troll. I have seen a few of your replies in which you said you have fixen the problem and will share a video. bu it still have not done that. I hope your intention is not to sell something because if that is so then you are breaking the rule 7 and 11.
[POCO M3 Questions & Answers] sarabbafrani:
i just tell the fix to one user: chegue4

you can ask him if im troll

im application manager at mobile company

i fixed this problem 3 month ago

i promised my company dont share any data about poco m3 till 22 october

i just asked to all poco m3 owners dont attack motherboard till the fix comes

its just short circuit...
[POCO M3 Questions & Answers] cloudonthesky:
I hope you are saying the truth. my brother just bought poco m3, after reboot it does not boot. the bad thing is I told my younger brother to reboot and see what happens and the phone had 89% charge left. now I have to wait for 4-5 days for the phone to discharge itself.
[POCO M3 Questions & Answers] sarabbafrani:
disassemble the phone (youtube).

remove battery.

disconnect cameras.

just make cold or warm whole mainboard

then replug battery. boot phone with 5v charger

use it without powering off or reboot manually till i tell you exactly capacitor that is short. everyone can do this fix in home. trust me bro 😉
[POCO M3 Questions & Answers] ndqphuong:
Thanks @sarabbafrani your steps work, Is it permanent fix or a firmware update can fix this ?
[POCO M3 Questions & Answers] sarabbafrani:
no

its hardware issue that prevents normal boot.

firmware update or change in software can not fix at all...

maybe 1% if company can disable edl mode from Qualcomm cpu in your phone.

its not permanent fix

temperature just helps you to get out of emergency download mode (EDL) once
[POCO M3 Questions & Answers] AlphaBravo:
How did you manage to get it boot up? Please share.
[POCO M3 Questions & Answers] Minoda86:
Make sure the battery fully drained,the only to fully drain the battery was to jammed something on the power button,my method was using rubberband and que tip.This works too when you desperately need to reboot your phone but make sure to only use this when your battery at 1%,so it takes about 10 minutes to drain the battery.How to know your phone has fully drain?,its when you plug the charger your phone will vibrate and show a big battery logo,now wait until its get to 1%,try push power button like normal to boot the phone,it may show the poco logo and then it will go black screen again but dont worry,if this happen just drain the battery again the try to plugs in charger again,wait for vibrate and battery logo again,but dont powet on like before because the phone would auto boot on its own,if that happen then your phone would boot like normal and you do it right.It may takes 2 or 3 retry to works,if it fail to work then there no other fix other than opening up the phone and try the unplug battery and plug charger while holding power then plug the battery again and this method wont work if the phone has charge in the battery.Thats all that I can share,only these method works for me.I cant guarantee it will work for others but Im just sharing just in case it helps.
[POCO M3 Questions & Answers] Dan32lx:
Allo everyone, forgive me bad english.

from start,

1, to get your poco m3 to work, only two ways, oppening and shock de battery as already explaind here, our let the battery drain. ALL OF THIS IS JUST TEMPORARY IT DOESN'T FIX THE PROBLEM

2. this fix is only temporary till next time your reboot.

3. forget hardware problems IT'S NOT HARDWARE PROBLEM.

4. it's just a big bug,

SOLUCION

As soon as get your fone to work go to updates, there will be an update to miui 12.5 (android 11 based) a 2,5GB file update it, it will go black again, let it be. after 3 hours try to fastboot it, power botton and vol -

if it dosen't work, do the shock battery.

it will fastboot.

it will freeze in fastboot. press power button 10 seconds and it boots

now you have android 11 (hugly basterd) and MIUI 12.5.

you can reboot it safelly for the final test.

FIXED
[POCO M3 Questions & Answers] cloudonthesky:
there is an update in size of 2.5GB but it is not android 11 or miui 12.5 for me. the update version is 12.0.10 and I afraid to update it. I can not risk it yet at least. if someone knows please tell me how can I unlock the bootloader in this f**ked up situation? even if I want to go into fastboot mod to unlock the bootloader it will not turn on. someone on this thread said that it is not a software problem, he/she is using a custom rom despite that the deadboot problem still remains.
[POCO M3 Questions & Answers] Dan32lx:
Try clicking in search updates and in the top right corner there is 3 dots click in it, the first option you can choose the update.

the miui 12.0.10. didn't work for me, bricked the phone.
[POCO M3 Questions & Answers] sarabbafrani:
fix is here

https://xdaforums.com/t/poco-m3-does-not-turn-on-anymore.4286783/post-85692315
[POCO M3 Questions & Answers] ndqphuong:
It's works, mine is restart, reboot normally now. Thanks
[POCO M3 Questions & Answers] AlphaBravo:
I just removed battery terminal and reconnected it. Pushed the power button and phone started normally after being dead for 2days.
[POCO M3 Questions & Answers] sarabbafrani:
read upper posts

we told if your battery get fully drained

then you can charge phone

but finally you should do this fix bro
[POCO M3 Questions & Answers] Romainj_:
i try this morning and...no luck...

In a loop Vibration -> POCO Logo -> Battery % -> black Screen.

Then in a desesperate cause, i reassemble all the phone, and ... voilà !! it's working !
[POCO M3 Questions & Answers] Sus_i:
Thank you very much :)

After about two weeks with a dead poco m3 (the drain-battery method worked only once for me),

I can confirm that your fix works fine, really awesome and easy fix!

Thanks again mate.... :)
[POCO M3 Questions & Answers] Johndoe0909:
Mates,

Please share your ideas. I encountered the deadboot problem 2 weeks ago when I had 50% battery. I let the phone discharge on its own and it took only 3 days then a battery empty icon appeared and I charged it and it turned on. And last Sunday (6days ago) I forgot to charge it and it turned off at 0% (battery empty). But still when i connect it to the laptop it detects the phone and no sign of battery empty icon. I mean how's that possible when I had 50% battery it only took 3 days and now it's 6 days when turned off at 0%. By the way I saw this cotton band method today and I'm currently doing it. (4 hours) no sign of battery empty icon so far. What should I do? I cannot give it to the service center without getting my data. Please respond thanks in advance.
[POCO M3 Questions & Answers] NOOR UL HASSAN_2233:
Easiest way to recover any Xiaomi phone is mi flash tool
[POCO M3 Questions & Answers] MrHottabych:
Hi, friend. Is there another solution besides the cover? Or is that it?
[POCO M3 Questions & Answers] sarabbafrani:
Hi bro

As i told before

There is contact between capacitor and inner side of shield that makes short circuit, affects on cpu edl wayjust broke this contact by removing shield
[POCO M3 Questions & Answers] MrHottabych:
I did it the same day. Then he washed it with alcohol, but did not put the lid back. Still works like new. :-) :)
[POCO M3 Questions & Answers] sarabbafrani:
You can put it back

But remember don't press it

Capacitor is big
[POCO M3 Questions & Answers] MrHottabych:
Do you have to put the cover back in place? Doesn't seem to work
[POCO M3 Questions & Answers] MrHottabych:
Need to replace the cover? this works too
[POCO M3 Questions & Answers] eyedolise:
Hello. I'm new to this post but I'll share my experience with the blank screen of death Poco M3. I've NEVER updated it for this same reason of becoming bricked. However, after using the phone for 6 months, I began to notice the phone got hot without me doing anything so I rebooted it, big mistake lol. It didn't come back on, apparently until the battery was fully drained! After going through this 5 times, I was still under warranty and wanted a new phone to be honest but the repairman actually fixed it. He removed a very small five sided metal enclosure on the chipboard which he said was preventing the current to power on the phone. No problems since, it works like normal. my contact info is on bit.ly/3tqhbhk
[POCO M3 Questions & Answers] Sus_i:
Thanks for the report. :)

Seems your repairman reads also the xda forums and found the fix here:

https://xdaforums.com/t/poco-m3-does-not-turn-on-anymore.4286783/post-85692315
[POCO M3 Questions & Answers] AlphaBravo:
My phone's battery got zero and it didn't turn on again. Same problem.

Now I have used the heating IC method. No success. What should I do?
[POCO M3 Questions & Answers] Sus_i:
You may remove the shield that is shorting a cap. Take a look here:

https://xdaforums.com/t/poco-m3-does-not-turn-on-anymore.4286783/page-3#post-85692315
[POCO M3 Questions & Answers] AlphaBravo:
I did that. Removed the shield and then heated the IC.
[POCO M3 Questions & Answers] yeisson406:
Hello everyone, initially sorry for my English I use Google

My case: after an MIUI update it was blocked, the symptoms: it did not turn on, it did not enter Recovery, it did not enter Fastboot, nor did it load

What I did initially: search all the possible methods by Google and none worked, only disconnecting the battery worked so that at least it would charge; then I found the solution to let the battery drain completely and put it back to charge until 100% turned on but it was still stuck on an infinite reboot. I gave up the 7-month 4Gb / 128Gb equipment for lost, I tried to contact the warranty without any response ... Note: never use temperature methods to the chips, or to the board, or bridges, anything electronic.

If you recognize by usb on the pc, the driver: "Qualcomm HS-USB QDLoader 9008" then this you should do:

The solution:

1- Simply disconnect the battery and the flex from the screen then reconnect them.

2- Now leave it like this for 8 days until the battery is completely drained (you should not do anything else, it will discharge itself)

3- After 8 days connect it to the original charger and let it charge for 5 minutes, without disconnecting the charger, click the power button and it should turn on normally as if nothing had happened; I know it seems like something funny or stupid, but that method worked for me, maybe it was luck, I don't know, I had been battling a solution for 3 months, I just wanted to eagerly share this solution before they damage their cell phones by doing experiments with their motherboards. I wish you luck.

Note 2: the phone was only uncovered to release the battery and screen flex, nothing more for that ok
[POCO M3 Questions & Answers] yeisson406:
Hello everyone, initially sorry for my English I use Google

Method 11-16-2021

My case: after an MIUI update it was blocked, the symptoms: it did not turn on, it did not enter Recovery, it did not enter Fastboot, nor did it load

What I did initially: search all the possible methods by Google and none worked, only disconnecting the battery worked so that at least it would charge; then I found the solution to let the battery drain completely and put it back to charge until 100% turned on but it was still stuck on an infinite reboot. I gave up the 7-month 4Gb / 128Gb equipment for lost, I tried to contact the warranty without any response ... Note: never use temperature methods to the chips, or to the board, or bridges, anything electronic.

If you recognize by usb on the pc, the driver: "Qualcomm HS-USB QDLoader 9008" then this you should do:

The solution:

1- Simply disconnect the battery and the flex from the screen then reconnect them.

2- Now leave it like this for 8 days until the battery is completely drained (you should not do anything else, it will discharge itself)

3- After 8 days connect it to the original charger and let it charge for 5 minutes, without disconnecting the charger, click the power button and it should turn on normally as if nothing had happened; I know it seems like something funny or stupid, but that method worked for me, maybe it was luck, I don't know, I had been battling a solution for 3 months, I just wanted to eagerly share this solution before they damage their cell phones by doing experiments with their motherboards. I wish you luck.

Note 2: the phone was only uncovered to release the battery and screen flex, nothing more for that ok
[POCO M3 Questions & Answers] Sus_i:
I don't know what IC you mean. For me it was enough just to remove the shield.

Maybe take a photo and send it to sarabbfrani's whatsapp.

Take a look if the phone is still in EDL, if you connect the usb.
[POCO M3 Questions & Answers] Sus_i:
That isn't a fix, only a workarround in order to power on the phone.

Culprit is a shorting, inside the phone, which needs to be fixed, or the deadboot can happen anytime soon again.
[POCO M3 Questions & Answers] ZoldierZ21:
tu metdo funciona pero hay problemas con esa actualizacion
[POCO M3 Questions & Answers] Scammer 1D:
I have. Sell me your phone for rm200. Lol
[POCO M3 Questions & Answers] Scammer 1D:
I did. The problem seems to be in the capacitor at the charging cip. But before anything else, you should first try to disconnect the battery for a few minutes, then connect it back. If that didn't help you need to open and take the board out. Open and exposed the charger cip. Then by using a hot air gun, heat that area until the soldering melt. Do it carefully because if any of the components move, your screwed. Let it cool, and re assembly everything. Cross your fingers and push the power button for 2 minutes. If you did it correctly, it should work
[POCO M3 Questions & Answers] isrmicha:
So, theres any permanent fix ? if i flash a new firmware will fix it forever ?!
[POCO M3 Questions & Answers] rajlesta:
No, it wont (if your phone is already having deadboot issue)

Yes, if you never had issue before, it suppose to work normally.
[POCO M3 Questions & Answers] thecjan:
M3 broken because fail product, can replace MB before warranty.
[POCO M3 Questions & Answers] Koyje:
heyyy can u help me with my device?
[POCO M3 Questions & Answers] Koyje:
You save my ****ing life
[POCO M3 Questions & Answers] dkrausejr:
it worked for me
[POCO M3 Questions & Answers] mabinodkhadka:
if anyone still facing this problem i have a easy solution for turning device on.
[POCO M3 Questions & Answers] of.tigler:
what is it?
[POCO M3 Questions & Answers] AlphaBravo:
Share buddy
[POCO M3 Questions & Answers] Emf9195:
i have two phones with this same problem...please share.
[POCO M3 Questions & Answers] mabinodkhadka:
If our problem is same then try this. First check your phone is detecting on computer or not. If computer is detecting device press power key and volume down button at once. Your PC will give disconnecting notification. Please note that timing when your PC gives disconnecting notification. Now disconnect your set, prepair your charger and press power key and volume down at same and at the noted disconnecting timing connect your charger with phone. If you get succeed, your phone will show charging animation. You have to try several to get succeed in this method. Thanks. sorry for my broken English. 😊
[POCO M3 Questions & Answers] AlphaBravo:
Hit and Trial. Not an easy method as you said earlier.
[POCO M3 Questions & Answers] mabinodkhadka:
Do you succeed or not?
[POCO M3 Questions & Answers] AlphaBravo:
I got it repaired at a mobile repairing workshop, it worked well. After that it I use to restart it after every 6-7 days, because its my understanding that if you run this phone non stop without restarting for a month, it becomes hot hung and switches off automatically. So before reaching that point restart it manually yourself to keep it cool.
[POCO M3 Questions & Answers] cfxavier:
Yes I have succeeded in fixing a Poco M3.

It is a hardware problem but easy to fix.

I have seen several possble fixing, but most of tem just hide the problem heating the Motherboard.

The video where I found the solution is the following:

I did it miself, it requires just a litle knoledge of soldering and a component easy to colect in most of the junk motherboards.

Or, perhaps, show this video to a techinitian.

Any average technitian can do it for you.

I am typing this message from my POCO M3

Which was with the same problem.

Good luck.
[POCO M3 Questions & Answers] AlphaBravo:
Which component he moved?
[POCO M3 Questions & Answers] cfxavier:
It is a coil 1uH 3.2A +-20%.

However, this solution did not last long!

Sorry.

But, I am trying different approaches, I will post the permanent solution.

Now I have 4 different POCO M3.

Please give me a couple of weeks.

One of the POCOs worked with removing 2 capacitors, however, the other 3 lost carrier when I do the same.

For now, just disconnect the battery and the screen/changing cable before each power on.

I will find a solution.

I have 3 cell phones to fix!
[POCO M3 Questions & Answers] cfxavier:
Ok!

I have tried removing the big capacitor in the top of the circuit and the one in thr botom. It works. My wife is with this phone for 3 weeks it is good! However, if you have replaced the coil for anything different of 1.0 Henry. The phone will loose the carrier.

I am trying the fix as shown in the following video:

Note that, this circuit is a LC oscilator, which uses 3 of the 5 capacitors. The fixing shown in the video looks very promissing. Placing a bigger (10 uF instead of 4.7 uF).

I will try this solution with different coils.

Thing that not work (permanently):

1-just remove the cap

2-heat the coil

3-replace the coil

4-remove the top capacitor (the bigger one)

Thing that worked (so far):

1-remove both capacitors (without changind the coil)

In one of my devices I damagef the IC

and I had to remove everything and short circut the vbatt with the output of the coil it works, but the phone lost the carrier.

Therefore, be extra carefull!

Please give me another 3 werks.

I will try to fix the phone with the lost carrier.
[POCO M3 Questions & Answers] joekerr00:
I'm having this issue and I can;t figure out how it happened or what the cause is I thought it was magisk or youtube vanced but I'm daubting it now.

after a reboot the phone rebooted in edl mode, if I let the eatery completely drain could boot in fastboot and then in recovery and or system,as I was having camera issues I took it to the local mi service centre the guy said it was software and it was cause I had the phone rooted, two days after that it stopped rebooting. I was playing with different recoveries and in twrp I got an error enablefilecrypto_failed and that I should erase data I did so, the phone lived for a reboot and then it died in edl.

both the pc and mi flash see the phone in edl mode but it wont boot, I've been trying to drain the battery to get into fastboot mode without success for the past three days.

my thinking is the service guys didn't activate fingerprint or password encryptiion and the phone worked until I added fingerprint lock it could be something with the current rom and encryption if I manage to boot it again and if removing encryption helps I'll comment if not I'm gonna take it to the xiaomi service and probobly get a new board as I'm sure it's not an inductor or condenser combination but if somebody figures it out please writte as this was a good phone while it worked :/
[POCO M3 Questions & Answers] joekerr00:
after a few weeks being locked in edl my phone woke up and I managed to flash it with mi tool but now I get an error nv data is corupt, sadly I didn't notice and locked the phone during flash and now fastboot is useless.

my point being this might be a symptom of multiple causes most of which are hardware related.

I don't know if nv data error is fixable or the mother board might need replacing but...

I just wanted to share my experience.
[POCO M3 Questions & Answers] AlphaBravo:
I attached my POCO M3 to the laptop after 4-5 months of it being dead, and it showed sign of being charged. After about 20 minutes of charging by the laptop I tried to turn it On and it turned On. Now running fine.
[POCO M3 Questions & Answers] Devil_of_CRY:
I had same issue, its mechanical problem for all poco m3, take to service they will fix it. It can be fix with two way one with battery indicator not changing stick on 50% , they take off two resistor from mother board its cheap the second way is repair the motherboard it will be expensive but work normally.
[POCO M3 Questions & Answers] Liffeyman:
There is no ribbon connecting the buttons with MB. Without the MB back plate securing it the buttons are defunct
[POCO M3 Questions & Answers] bidomo:
My poco won't turn on with this method (battery disconnected, press power, connect cable, connect battery), used to work las time, but now it doesn't do anything, shows a white battery icon and that's is, no attempt to turn on
[POCO M3 Questions & Answers] Romainj_:
https://xdaforums.com/t/poco-m3-does-not-turn-on-anymore.4286783/page-3#post-85692315
[POCO M3 Questions & Answers] bidomo:
I never updated my phone cause I knew this would happen, I tried to reboot for a very different reason, and now I can't get it to turn on, pretty bad timing to fail on me

.::EDIT::. So, Instead of using the wall charger, used a USB 2.0 port on my PC, phone turned on at first try
[POCO M3 Questions & Answers] Romainj_:
use this hardware fix.

https://xdaforums.com/t/poco-m3-does-not-turn-on-anymore.4286783/page-3#post-85692315

remove the metal
[POCO M3 Questions & Answers] NonStickAtom785:
Do u have a stock firmware for it? Otherwise known as a factory firmware.

If you then you spilt the image sparce file and even the bl and use xbl to reboot
[POCO M3 Questions & Answers] bidomo:
Yeah, so a couple months in already, and I was forced to restart, phone was dead, battery too, so EDL mode doesn't actually allow you to charge battery (found this the hard way) no one wanted to help me desolder as I sold my station a while ago, technicians wanted half the cost of a new phone, so I had to resort a bit to violence, and I don't regret it... even if it dies, already paid my stuff I needed to, and I have the rest of the month to get a new phone, but I don't think is gonna fail, I was extremely careful and if it lives, I will give it away to a friend or something and going back to samsumg or something
[POCO M3 Questions & Answers] AlphaBravo:
So what did you do with the phone?