Lg g4 no power board repair
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- Опубліковано 5 лют 2025
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Very useful video, thank you very much! I have the same phone to do for my customer, i am going to try! Thanks
Desde sudamerica Lima Peru te digo gracias muchas gracias me sirvio muchicimo pude revivir el equipo. un abrazo ala distancia maestro
I'm not experienced enought to judge whether the time you spent on that board is worth it or not. It's a considerable amount time for that small device which probably was not costly. I wonder if there's no sure-fire way to identify that component. You weren't sure whether it was capacitor or a risistor. How did you decide eventually? Despite all of that, you're a great troubleshooter. I like your teaching method and how you guide the viewer through your thougth process. Thank you Sorin for the great work!
You have a very beautiful tools!!! ♥
Thank you
You need a thermal imagery camera for finding those hot-spots. I'm guessing a shorted diode in the power circuit.
im learning from it...cheers
Sorin is not dodgy here .
Tell me Mr.Sorin when I find a shorted capacitor what to do to choose the right one for soldering?
Not sure if you'll reply back but, after you added the fluid what did you do? Get a current through the board? How did you do this with the DC power supply or just push the cell phone battery in place?
Hello, did you put flux on as the liquid that was boiling off?
on the end? yes
Electronics repair school You very good at what you do If you can find a fault like that on a cellphone mainboard you should be able to fix almost anything, please can you do more videos on that technic you done with the lighter fluid and videos on finding shorts etc on boards?
Hey...i actually have the same phone...and guessing i hv the same the same problem as well....can u tell me ..how much it approx costs to get it repaired??
hello sir what is the name of the liquid that you put of to find where is the hit component?
hello. if i do this will i loose data i.e video and pics that are on the phone?
thanks in advance
Bravo what is that liquid you put and what is the amount of current you pass?
zippo lighter petrol, and 2Amps
that is great ?????
@Electronics repair school
Thanks for you video.
I have a LG G4 too and it had the same problem as yours!
I've managed to fix the short problem and the culprit was a component like the one did take out near the Qualcomm PMI 8994 chip (which is a voltage / power controller I guess)
but mine was a bigger one but not the smallest like yours.
So my question is that: I didn't replace the component but the phone is working fine so will it cause another problem later if I don't replace it or I can leave it empty like that?
Thanks! :)
No
tnx 4 video. the question is when u used zippo fluid the board plugged in charger or any voltage or not?
thx . that is a good guid
that it nice trick for testing phone batteries. so if i understand correct if you put 6v on phone battery is ok? and if battery is fast charging 2+ amps?
You replace short cap with random cap because you dont have shematics. Is this ok?
Anyway nice video tnx for sharing.
i will make a video about charging and testing batterys. You have to use amps limit, 2Amps limit its ok for any battery. A random cap its better than a shorted one :)
Sir thank this kind of vedio very help ful ...my custmer phone lenovo .his phone i cheq he is not sort no water damage his reading is proper in battery conecter .but phone is not on .i also cheq on power supply cheq in battery connecter is ok i also cheq power supply on off swich is 3v-3.50 is ok dispply power supply also good but phone is not on .the mother is not hetting eny side plz helpp..do u have any solution?
Thanks
20:20 what did you do to find that short cap !!! can you explain that what is that liquid and how to find it sir. thank you for your videos. !!!
I'm not exactly sure about what he used, but you can use alcohol.
très bon tuto ,merci pour le partage.
peut tu me dire à quoi sert la PMI 8994 sur l'autre face de la carte ? merci
c'est un chip qui gère l'alimentation des composantes de la carte mère.
Il y en a deux sur celle là.
My LG magna it won't turn on"no power" not charging too, what is the problem of my phone?
is there a way to access the internal memory on a phone that wont power up and cannot be accessed with a computer by usb. all i want is to recover files.
Probably some JTAG tools
Probably some JTAG tools
30:5 What is the name of that tool in your hand ?
I WAS A VAPE ... VAPE NATION LOOK IT UP!!! SODIE POP!!
Sheshah 😂
its heater you know to give heat to that sink which sucked up
what is the alternative to use that zippo lighter petrol?because it is only available on ebay and amazon that is not shipping on my country
just buy any lighter petrol
hello sir. I have the same problem with my LG g3. It is dead and can't power on. I checked the battery connector and USB jack, both were ok because some components get voltage.
I have g4 h540 stylust. No lcd light. Water damage. Red light only. Pls help
as it is called that part that is plugged in and loads the smartphone, it looks like the charger but I noticed differences. I'll see youtube commercials so you can win more. i am brazil.
How do you find if it's a capacitor or a resistor?
same thought
@@bkstrat resistors are black
hi..if I send my lg v10 board to you..can yo fix it? it got no power.
probably not, i'm no specialized on phones repair
My LG G4 has the same problem. Can you fix it, if send you my phone?
please help me repair my G4 whose circuit components has been over heated ..
I have a LG G4 818p that is completely dead ,no signe of live ,no reaction , no power ,not recognized by the computer in the device manager while othe that have the same probleme show qualcomm .... in te device manager of windows etc . is this the sign of a defect power ic ?? In yhe other side of the mainboard of the LG G4 we can also find an other ic that has the same name pm8994 ,so how we can know wich one is defective ?
i'm really sorry, but i have no to much experience with lg phones. But looks like the power manager ic its stuck with black glue, so i think will be hard to be replaced
ok i see it The liquid used to find the fault its Zippo Lighter Fluid Fuel Petrol.
Hi
Do you know about boot loop LG g4.
thanks for your good video
Hi, i know its a graphics/processor fault/bad design from factory and can be fix only temporary by reheating the board. No much what can you do
@@electronicsrepairschool hi, does LG G3 have the same problem from factory?
How did
you know the value of the capacitor
if it looks the same, must be the same :)))
Electronics repair school thanks
Firstly the capacitor looks smaller and secondly you took it from another board without knowing its values. The phone turns on but for how long???
Same with my Lg G4 no power.
Sir need g4 h63120i debrick ing or dump file
i think that you overheated the qualcomm chip. it blew solder balls from the underfill
please i have problem in G4 that no power at all and when i conctet the phone to power suply and press the power key the Ampere rise up to 12 then when i take off my hand from power key Returns to zero
looks like you board its alive and the power supply ic its reading the power button. Try to rerwite the software first, can be a software issue
I have a LGG4 phone that does not work, but when I put it in the charger it shows a picture that it is charging but it does not heat and when I press the lock I feel the phone shake but do not show anything, I took it to many phone repairers could not find the solution. Is it a solution please?
Hard to say, can be anything
It does not work, does not accept flash, and the computer does not recognize it.
There they told me that the holidays fall in the motherboard
mine sir there is also having problem if i will turn off i will be lucky if turn on in 2min. but mostly itwill take sometime
Hi, where are you from please ? I'm from Algeria and I have the same problem with the same phone. So can you please help me ? I'm waiting for your answer. Thanks
how much voltage you applied?
on phones you can play with max 5v, but to be safe dont go over 4.2-4.3v
where on the board you applied the volts ?
on the battery connector
did you knew the capacitance of the new capacitor?was the same?
no
A thermal cam would have saved you a lot of time.
hey broo,a want to learning withe you more please .......my job is reoair phone
well done ...
Yo ninguno se lo no no me carga así que qué pasó
Hello sir
nice work but it can also work without cap....please kindly dont put or view in this angle its really not good viewing...use camera view like in your previous video... its really irritating to watch your video from your head camera...
I have a lg flex 2how can if ix it it also has bootloop p[roblem
I'm really sorry but i'm not very familiar with lg phones
mere pass bhi lg g4 h bit uski power ic me problem hai
jesus christ you scared the hell of me.. i thought the battery is smoking at 29:50
sir I have g4 it was dead please help me
i wish i can help you, but how
Electronics repair school
sir....your from which city
Grays-essex
Electronics repair school
oh sir I am from India....
here technicians was not ready to repair lg g4
it was manufacturing defect lg was replacing but I am not in warranty
Thats not true, are good people there, try to find the right shop for you
too much close up, no commentating :(...but i know its one of your old videos so thats ok :)
hello my friend I LG g4 no power coming can u halp
how can i help you?
i have LG G5,can't charging,can't turn on,can't connected to computer and can't hard reset
hello guys...i had one lg v10..i buy it 23/3/2016...then bootloop at 12/2/2017...i buy from online shooping...the problem now is...when i email to LG centre at my country...there replied.." sory...we cannot repaire ur LG v10 because..we cannot sell ur model in this country..." wtf!!!! i buy this fhone MYR2399.00 ...lol...now...when i email...they are rep " sory sir...please refer to our shop , where u buy this lg.." now 16/6/2017...already expired of warranty...how can i fix my v10??? still can repaire for free??? i luv my v10...
sory for my bad english...
i love my old car also, but here we are. Buy another one, buy a samsung or iphone :)
Sir anyone contect number my lg g4 dead
Hello sir ap ka number
presentation of repair with action camera.
vertigo is inevitable, you get sick.
I give you money and lg g4 he is dead send context number
produk gagal
Hi
Do you know about boot loop LG g4.
thanks for your good video