yashsingh1/xdaforums huggingface dataset:
[POCO M3 Questions & Answers] grg7:
my experience for anyone experiencing similar issue -

had it for about 1.5 years with no problems and recently one day i used it overnight tethered to pc for heavy downloading overnight. in the morning battery was swelled but the phone worked but since then it got worse everyday and back cover started prying open. that is when it turned off the phone, only to find out about the deadboot! I used the drain battery method for temporary fix but i had to change battery as well, i searched for deadboot fixes and found many - removing caps, just heating the shield, removing the shield...so i decided to go for removing the shield.

step 1 - disassemble

step 2 - carefully memorize every part and **** because those rubber caskets for cameras and head phone jack will fall and there are other tiny plastic / rubber stuff there too (yeah it is harder than it looks on youtube trust me)

step 3 - I used a tweezer to hold on the shield while directly touching the top of the shield with a flat soldering iron tip with 450c temp setting

step 4 - with in about 2 min of "touching" the shield came of cleanly

step 5 - cotton swab with IPA 99 to clean the area, made to no solder spread or bits left.

step 6 - tried to refit the mb, but no it wont sit properly no matter how much it jiggle or wiggle it around

step 7 - tried pressing down brute, nope! (almost broke the mb)

step 8 - careful inspection reveals the excess thermal paste was solidified around those metal plate where those shields fits, preventing them from seating properly (great quality control xiaomi / poco f*cks!)

step 9 - cleaned those thermal paste deposits and the motherboard seated as it should and the phone worked, turned off, rebooted well. I've even updated to miui14

step 10 - made a blood oath to NEVER BUY XIAOMI / POCO DEVICE EVER AGAIN!

SOME TIPS -

if you don't have soldering / hot air station you can use -

an iron box tip or a magnifying glass under good sun to heat the shield. just don't spread that solder!

if you are brave enough you can nibble away the shield with sheet cutters / similar.

don't do anything to the caps. only the shield is the problem it seems.

like i experienced pay attention to those thermal paste deposits when reassembling!

it seems like sudden heating of the device is what causes this problem, so never let your poco m3 overheat or better don't buy xiaomi / poco!
[POCO M3 Questions & Answers] yankee77:
Xiaomi finally replied to my email

And yes i didnt check my mail coz it took months i reported this on may
[POCO M3 Questions & Answers] sarabbafrani:
i found the problem

works 100% 😍
[POCO M3 Questions & Answers] kentfelices:
How?
[POCO M3 Questions & Answers] RyanVIII:
i got this problem after 12.0.9 recovery update .tried to downgrade to 12.0.4 using fastboot, still the same then upgraded to 12.0.10. after replacing stock recovery with twrp my poco went dead..i've been trying so hard to turn on this poco for the past 4 days and did all the methods including heating the motherboard , removing the battery,reconnecting all the connectors, draining the battery but none of all these work for me..but this time the phone turned on .. but it's just a temporary fix...anyway thanks for the method(y)
[POCO M3 Questions & Answers] newbiez5p:
please explain how
[POCO M3 Questions & Answers] newbiez5p:
can u pls explain
[POCO M3 Questions & Answers] newbiez5p:
i managed to to turn it on by holding power btn while battery was unplugged then i plugged in and it turned on and now this is my question

will custom rom fix the problem ?

how can i unlock bootloader while i even cant restart ????

any help appreciated
[POCO M3 Questions & Answers] RyanVIII:
see this video...i just removed the ic cover..
[POCO M3 Questions & Answers] newbiez5p:
oh i saw that

but i found ez way:

unplug battery

plug charger then plug battery cable

u will see POCO screen and charging animation but wont boot up

in my case i waited and saw that ic from video started to heat up

it seems there is ic(u might u call it chip) problem

after heating up i unplugged charger then pushed power btn then it boot up

i could restart without blackscreen for 3~4 mins

i managed to go fastboot to unlock bootloader to flash custom rom but mi flash couldnt read my phone (read failed please refresh or reboot device :ERROR)

its expensive and hard to find parts for this phone in my country , will be fixed if i replace that ic ?
[POCO M3 Questions & Answers] sarabbafrani:
i found a fix
[POCO M3 Questions & Answers] RyanVIII:
yup same for me... i can restart it without any problems for a few minutes..about the ic, i'm not sure about it..i never tried it..
[POCO M3 Questions & Answers] chegue4:
can you explain how to short circuit capacitor with shield ?? we didn't understand this fix please explain
[POCO M3 Questions & Answers] sarabbafrani:
i will upload it today in youtube

i fixed about 100 poco m3 in two month (no return)

this short affects on edl mode testpoint way
[POCO M3 Questions & Answers] chegue4:
i hope you notify us when you upload the video because my brother's poco m3 is still disassembled and i need your fix
[POCO M3 Questions & Answers] sarabbafrani:
I have been facing the same problem in the last month

about 40 pieces 🤦‍♂️🤦‍♂️:ROFLMAO::ROFLMAO:
[POCO M3 Questions & Answers] AlphaBravo:
How? Please explain in detail.
[POCO M3 Questions & Answers] newbiez5p:
i think i already said in detail

un plug battery

do this part vert fast -->

insert charger then asap re plug battery cable then hold power btn to boot up

// if u fail to see poco or battery anime then redo

its pretty simple

if u search xda vw , there is someone who uploaded similar to this a video to his google drive
[POCO M3 Questions & Answers] newbiez5p:
im gonna add one more thing

i already updated to latest version (12.0.10)but still have black screen

so dont bother updating
[POCO M3 Questions & Answers] Lef1337:
i have exactly the same person after the last update my phone goes only edl mode
[POCO M3 Questions & Answers] Lef1337:
i manage to make it boot again with the battery trick is any permanent software fix ,specific update or firmware ? i have the last update at the moment
[POCO M3 Questions & Answers] AlphaBravo:
How did you manage to open the back cover of the phone? Please guide bro
[POCO M3 Questions & Answers] Lef1337:
its very easy to open just need the blue tool check also if you want the video
[POCO M3 Questions & Answers] AlphaBravo:
Yes. Luckily I have these tiny screw drivers. Thanks God I got my phone boot up by battery disconnect re-connect technique. Thanks buddies.

@Lef1337 Thanks dear
[POCO M3 Questions & Answers] 010janbaz:
FIX , FIX, FIX. My poco m3 stopped booting up/recovery/bootloader. Tried disconnecting battery connector, display connector, reheating but nothing worked permanent. Only solution was to wait for the battery to drain after which charge it enough to boot it. That worked but i couldn`t use recovery or bootloader until battery discharged and then booted it to recovery/bootloader as first boot. I contacted my friend from whom i bought the device from. He said its possibly due to some short circuit and all i had to do was clean the charging port (where the charger is connected) and the ear phone plug port with a tooth brush (bristles of tooth brush should be straight) dipped in 3-4 drops of petrol. At the time my phone was dead and was waiting for the battery to drain. However i followed my friends instructions and cleaned the charging and ear phone ports. After allowing the ports to dry i tried to boot the phone. It didn`t boot remaining dead. I had to wait a day+ for the battery to drain. I then charged it until it booted. I then tried to reboot it into bootloader and it WORKED. I treid recovery and it WORKED. Now AlhamdoLILLAH my phone is good as new except the marks on the cover made when i removed the cover. Try your luck Gentlemen.
[POCO M3 Questions & Answers] ArcherXY:
So I used a video going around for heating the circuit board and it turned on but I just recently updated it and immediately it went off for the reboot didn't turn on again
[POCO M3 Questions & Answers] AlphaBravo:
That's great. Waiting for a day or so proved fruitful.
[POCO M3 Questions & Answers] sarabbafrani:
permanent and ultimate fix. just remove shield

then reassemble phone

* There is no isolation ( inner side of shield)

To prevent contact between capacitor and shield then we can isolate it or just removing that shield

Just do it with edl (Qualcomm 9008) condition (your pc will detect it when installing that driver in device manager ports)

youtube:

first permanent and ultimate fix for xiaomi poco m3 bricked or dead EDL 9008

its first and best fix for xiaomi poco m3i fixed about 200pcs from 23.june.2021that i told in xda developer.just remove that small ic shield or heat till get...

youtube.com

any questions? connect with my WhatsApp

i will tell details
[POCO M3 Questions & Answers] AlphaBravo:
I just removed battery terminal and reconnect it, pushed power button and phone restarted normally, after being dead for 2days.
[POCO M3 Questions & Answers] Dan32lx:
try to rebbot and than tell my! if it's really fixed
[POCO M3 Questions & Answers] Sus_i:
Thank you very much.

I'm going to try that soon :)
[POCO M3 Questions & Answers] Highsen:
Thnx my Poco M3 is now able to restart even shutdown. It always Boot.
[POCO M3 Questions & Answers] newbiez5p:
i gave mine to someone with edl access account fixed this problem (for 25$ )
[POCO M3 Questions & Answers] Highsen:
I'm able too to downgrade and upgrade using recovery roms. Currently running now in Miui 12.0.10 global
[POCO M3 Questions & Answers] Sus_i:
Thank you very much :)

After about two weeks with a dead poco m3 (the decharging-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] MrHottabych:
Hi. This has been working for 3 days. Thanks.
[POCO M3 Questions & Answers] angelfreak:
Is someone after Black screen, dead phone and resurection after drain battery update to this New Rom that brake somany phones?

I just drain battery and will power on the phone, but this poco m3 is very bad phone with 4gb that works like 3gb maybe, bluetooth that has range maybe half meters, after that is loosing sound, connect ion with watch, Earphones....

If update or restarting kill the screen i will not do that but update says they improve lots of problems

edit: first things first, after reatach battery nothing happened...

in the morning I saw( after 3 days of draining) battery charging sign, and in was meant this is ok, I will leave on charge few hours. But nothing now , now more sign of charging and I can turn on phone...

open it deatach the battery but nothing, this one with ic shield? will be my last try because its risk for me. should I do something under this shield, video just stop, like you can drop this part in garbage
[POCO M3 Questions & Answers] Sus_i:
I ditched the shield into the trash and the phone works really nice without it ;)

If you know someone with a hotair soldering station, there isn't a risk at all...

Maybe a heat-gun will work too, but thats a bit risky. I guess if you cover all parts arround the shield carefully with tinfoil, it should work too.
[POCO M3 Questions & Answers] Baderisti:
After u remove the shield what do u do,coz my poco still dead after remove the shield
[POCO M3 Questions & Answers] Sus_i:
Nothing, a quick careful assembly and the M3 just booted like a champ.

My battery was at about 30%, maybe yours is lower and needs a charge?
[POCO M3 Questions & Answers] Baderisti:
I charge for 3-4 hours,but still not booting
[POCO M3 Questions & Answers] jula182:
Removing the shield works for me too. I can reboot and turned off the phone without any problem. Installing newer firmware also no problem. Hopefully removing the shield doesn't effect the phone reliability. Thanks.
[POCO M3 Questions & Answers] AlphaBravo:
Keep it in a good back cover.
[POCO M3 Questions & Answers] sarabbafrani:
You have another

Nothing

You have another problem connect phone to pc then install driver Qualcomm 9008

See if detects Qualcomm in windows device manager ports

Then tell me in my whatsapp for help

It will power on do not be afraid about it. I will help you bro
[POCO M3 Questions & Answers] Mhenin:
Thank you so much! It works for me.
[POCO M3 Questions & Answers] has an.ha:
خیلی ممنون،سلام،شماره واتساپ رو لطف میکنی،
[POCO M3 Questions & Answers] zabuza_momochi:
Can removing the shield compromise the security of the phone? What is that piece for?
[POCO M3 Questions & Answers] sarabbafrani:
Yo can reuse that shield

Just fill inner side of shield non conductive with kind of glue

But i have no problem after removing it,till now after 3 months and 500 Phone fix

---You have another choice bro:

Heat shild (untill),

That stands up a little, but it need pro man to do. (you can not use hair dryers for 400°C to make shild base solder weaker 😂🤦)
[POCO M3 Questions & Answers] Sus_i:
Thanks again for your fix. Awesome. :)

That Kapton Polyimide Tape is expensive, ditch the shield into trash is much cheaper :p
[POCO M3 Questions & Answers] fer15:
Can I remove that shield without a heat gun ?
[POCO M3 Questions & Answers] angelfreak:
hello

i had this situation before 2 months and somehow get poco working.

but now after update just dead again

first i have signal from phone when connect to pc, try heat this midlle part where some people on youtube says ic battery something

then phone starts to charge and i leave it for few hours

but after that nothing

now i dont have even signal on pc, no vibration, nothing, dead, dead

maybe i burn the phone or there is a solution, what do you think?
[POCO M3 Questions & Answers] sarabbafrani:
I do not recommend

For damaging motherboard
[POCO M3 Questions & Answers] sarabbafrani:
First make me pictures from that middle part

And send for me
[POCO M3 Questions & Answers] ZieNHK:
Can you record and post a video of the full process without cuts?

From showing the phone dead, not responding.

The disassembly, the fix, the assembly and turning on.

I want to trust you but this "video" don't tell me nothing, you can say "Well I'm a tech, I have fixed 1000 Phones with this!" but that is not enough to prove that is true until you show enough evidence.

I explained your method to a tech (one with the best rep and at least 10 years of exp) but he told that makes no sense since the phones are able turning on just from battery draining, if the problem is a short circuit there is no way the phone turn on even if it runs out of battery, what do you have to say to that?

And no, I'm not going to belive what accounts created the same day they responded here so don't waste your time.
[POCO M3 Questions & Answers] Sus_i:
Does this mean that you call me a liar? :confused:

I've tried and confirmed the fix above... it's working fine!

https://xdaforums.com/t/poco-m3-does-not-turn-on-anymore.4286783/post-85706229
[POCO M3 Questions & Answers] ZieNHK:
I am sorry if my comment gave you the wrong idea at some point but as you can see I have no reason to accuse you of lying:

All I'm looking for is OP to clarify my doubt (if possible) and post solid proof that his method works.

Isn't it odd that at this point no one has tried, recorded and uploaded to YouTube?

There are hundreds of reballing/reflow videos but I have only seen two pointing out this fix in short videos.

I just want the OP to give us more than just pictures

it shouldn't be hard for someone who claims to have repaired to date over 500 units, right?
[POCO M3 Questions & Answers] Sus_i:
No, not odd at all. I guess not everybody has got proper equipment to do nice youtube vids, especially if you do some tiny soldering at the same time ;) and the fix is rather new, give it some time, someone will do it.

I'm really glad that @sarabbafrani found the reason and posted his fix. Otherwise I guess I would have to trash the whole M3, since the hint 'draining the battery' wasn't working anymore (worked only once, then the battery charging symbol was still there, but no boot was possible, only into EDL).

The fix isn't difficult, maybe just try it and report back...
[POCO M3 Questions & Answers] ZieNHK:
I hope you're right and over time more users will share their results in YT.

Until then I don't think it's a good idea to try, the battery drain method still works for me and I can be patient until the OP or someone else posts solid evidence on YT.

Thanks for taking the time to respond, I hope the OP doesn't take it bad and continue contributing to the community.
[POCO M3 Questions & Answers] Sus_i:
I don't know if @sarabbafrani will do a more detailed video, seems his job is just repairing mobile stuff, but we will see more results over time.

In my honest opinion his fix is something for the xda frontpage.

(y)

No problem :)

You too, xda is a nice community :)
[POCO M3 Questions & Answers] sarabbafrani:
You can test it bro

I work for importer company , that We provide after sale services instead of the manufacturer because of sanctions in iran, for free.

Other companies in my country also sending their phones for me to fix

That was Cause of this quantity

I can not take video and fix @ same time

Ok bro i will record new video soon
[POCO M3 Questions & Answers] ZieNHK:
Thank you for your response.

I understand that it is difficult to do the procedure and record at the same time, also that because of your work it may not be easy to find the time to do it so take all the time you need.

I would like to add that more people are testing your method in a Facebook group right now, the first results are already coming out, everything seems to indicate that your method works fine without apparent risks, I am very excited right now!
[POCO M3 Questions & Answers] zabuza_momochi:
Hi guys, I made the repair as indicated by @sarabbafrani I removed the shield (pic attached) and the phone restarted immediately. I also updated to the latest miui 12.0.10 and everything seems to work for now. I will update you if there are any news.

Thanks to @sarabbafrani , nice job
[POCO M3 Questions & Answers] shabalkya:
i found the solution by draining battery. however, what if i want to factory reset the phone for some reason? will that deadboot again during reset? anyone tried this and any trick for successful factory reset?
[POCO M3 Questions & Answers] Sus_i:
If the draining battery method worked for you, you should do the mentioned fix...

Otherwise the deadboot can happen anytime again. Worst case, in between an update or something like that.
[POCO M3 Questions & Answers] fer15:
Hi, how do you remove the shield?
[POCO M3 Questions & Answers] zabuza_momochi:
I didn't have a soldering station or a heat gun available and since the alternative was to throw everything in the garbage, I removed the shield in a somewhat barbaric way. I took a fixed screwdriver with a wide tip and inserted it in the middle and with a little pressure the shield came off
[POCO M3 Questions & Answers] idkchii:
can you post the full video on this one not the edited one..... i want to know if its really working.. you already fixed a 500+ units? then you have one or two vid on the whole process
[POCO M3 Questions & Answers] zabuza_momochi:
UPDATE:

My poco stopped working after three days of repair. This morning I turned it off and I couldn't turn it on anymore. Completely dead. The bin is waiting ....
[POCO M3 Questions & Answers] sarabbafrani:
It depends on distance between shield and capacitor

In some cases these two contacted all times

In other cases if main board gets warm then capacitor connects to shield it will gets warmer and more battery usage

🤦🤦🤦 Do not attack in this way

I should tell it for all owners

1.Take off all cameras 2. Be careful about plastic parts 3. Cover all other parts from heating 4. Carefully heat that ic shield about 380-400°C 5. Carefully picking up vertically with Tweezers (be careful for shaking , pcb is hot with parts under shield ic and caps)

Heat untill shield base solder gets weaker

Pick it up without force because pcb ways may broken and affects on mobile network amplifier

You can test mobile network with this code

*#*#4636#*#* gsm only lte only and wcdma only

Image attached, pcb damage after removing shield cold
[POCO M3 Questions & Answers] Lou_Bava:
I registered to say thank you sarabbafrani. Your method is working. I couldnt turn on my M3 using methods like draining the battery or even unpluging the battery. Phone was dead and bricked like hell. Then i saw your post and gave it a try. I removed the shield and assembled the phone. worked instantly I updated it to 12.0.10. with no problems. My POCO is working without problems since.

You sir are a true genius.
[POCO M3 Questions & Answers] michidinho:
Guys, i had to say this for every1 out there, my poco m3 went dead after restart and this is DAY:4 still nothing.

I removed battery nd display, and still nothing. I had 70% charge maybe thats why it isnt drained yet.

So i did this method of removing shield, but still dint work. So guys, don't fall for this shield method so that you wont damage your phone. I am currently waiting for battery to drain. That is the surest way.
[POCO M3 Questions & Answers] Lou_Bava:
The drain method didnt work for me
[POCO M3 Questions & Answers] Sus_i:
IF the draining battery method worked at least once for you, that is a clear sign that the mentioned fix (removing the shield) will fix your issue...

In other words, if the draining battery method works not for you, we don't know if it will fix your issues...

Maybe contact @sarabbafrani to see if he can help you, he posted also his phone number (for whatsapp) somewhere in the forums.
[POCO M3 Questions & Answers] sarabbafrani:
Make me pic from motherboard bro

+989131074612
[POCO M3 Questions & Answers] N9 J9:
Hi, anyone have unbrick tool for poco m3? well, this device already in edl mode and wont boot. Just need to reflash the stable rom.
[POCO M3 Questions & Answers] Winamp_zg:
It works for me. Thanks a lot!
[POCO M3 Questions & Answers] sarabbafrani:
Phone will soon get into edl just remove shield that i told bro
[POCO M3 Questions & Answers] sarabbafrani:
Phone charging current in edl is about 100mAmps

After removing shield is 200mAmps

If you removed that and your battery drained in will be pluged about 5 minutes

Then phone charging current will comes upper than 1Amp and phone boot normally

There is another scenario that you damaged pcb in removing shield

If you removed that shield and getting into edl again

Don't worry you can fix it again with schematic , soldering iron and multimeter to find and get rid of edl
[POCO M3 Questions & Answers] Jona'san - sama:
Can i ask a question what exactly is the name|version of IC in our poco m3 ?

And also does replacing IC can help to get rid of this issue ?
[POCO M3 Questions & Answers] N9 J9:
I don't have tool to remove the shield. (ノT＿T)ノ ＾┻━┻ . My phone start working today after I drained the battery.Its soo laggy, I tried to reboot then it dead again. (ﾉ≧∇≦)ﾉ ﾐ ┻━┻
[POCO M3 Questions & Answers] sarabbafrani:
Use best termal paste on pmi632, cpu and hard (under and top of removable shield)

Enjoy best Performance 😍

You can remove shield with big lens under sun ray
[POCO M3 Questions & Answers] Pwpg06:
You found the problem or the solution? And what did you do to fix it?
[POCO M3 Questions & Answers] Sus_i:
I guess nobody will read the last three pages for you ;)

The fix is easy to find, you can see it even in the 'top-liked-posts' overview of this thread...
[POCO M3 Questions & Answers] ClockUpEx:
How's the fix so far for those who have tried?
[POCO M3 Questions & Answers] MrHottabych:
works
[POCO M3 Questions & Answers] ClockUpEx:
How long since you've done the fix? And did you only remove the shield? (no other parts replaced/touched/etc.)?
[POCO M3 Questions & Answers] MrHottabych:
took off the screen on 09/27/2021, tried everything that was advised first. only the removal of protection helped.

this is the solution

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

this is the result

https://xdaforums.com/t/poco-m3-does-not-turn-on-anymore.4286783/post-85708013