Asus X540N - Not charging or power on, motherboard repair
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- Опубликовано: 29 сен 2024
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You are the reason to make me dive to electronics.
I learn a lot from you.Thank you.
I have seen your comments in almost all sorins videos
God bless you man ! i have like 60+ defected laptops and they siting for 2,3 years like graveyard after I become addicted and started watching your videos every day I made some of them work! didn't even tested half I'm going rly slowly and learning from you step by steam ! we are all blessed we have you on youtube
Thank you so much!! I repaired my computer with this video
Very nice Mr. Sorin l Iearned a lot from your techniques -Filipino Technician
Happy New Year Sorin!
Thank you, same to you!
Sooo awesome. Welcome back sorin.
The Man of Techniques!
Yes I got the same fault in my laptop acer gateway I will try to solve this issue
you will have a working laptop but you loose charging on the battery thats a lazy thing replacing that mosfet is the good solution
Hi...sir.
I learned a lot of things from you.
May God always with you.
The other day I fixed a Lenovo of my daughter's friend. The charging light was there, but no picture. Watching all of your videos since you opened this channel, I assumed the fault might be a frozen bios. I opened the laptop, unplugged the battery, waited a while, connected the battery again, plugged the charger, pressed the power button and "we have picture." Unfortunately that friend had already bought a new Mac book pro, but she was happy to get all her files back, because she had no backup. And I also felt some kind of accomplishment.
Sorin, thanks and please do not think easy fixes or "boring jobs" are not helpful. There are many people who really enjoy your way of getting things done. Thank you again!
Her data was always still available, of course... A six dollar SATA to USB 3 adapter would have let her fetch her files off the naked drive in a few minutes. But it is kinda cool to now have an extra laptop. It's just sad that she went to the dark side... ;-]
@@robertcartier5088 Yes, I could have done that, but this young lady wouldn't even know how to open her laptop to retrieve the drive. What I've heard she was in panic to hand in a report, purchased the Mac and started all over again. At 3 am she could finally finish. Unfortunately, I got her Lenovo a few days later. "The dark side" is a good one!
The charging ic is a very smart ic it talks to the battery and to the EC (super io) if the charge pump to the gate is shorted to the 19v or ground rail I will not charge the battery I had an hp laptop that did not charge the battery even if you shorted the first mosfet S to D , The laptop would turn on but no charging , that hp laptop had a cap from dc in to the gate that was leaking current and drawing the charge pump down. on this laptop the fault is the 2nd mosfet G is shorted , those mosfet are n channel and require a higher voltage to switch on about 23V , I would test the mosfets :)
What about the 1st mosfet, the gate only has 3.1v. What's the connection to the 2nd mosfet?
@@pilotboy2612 If it was the first mosfet there would be 19v on gate the first and second mosfet gates are joined
I sat and stared at a bq277xx series datasheet for hours trying to fix an asus with the exact problem sorins had in the video. I never thought to check for a shorted charge pump. Ugh. Thanks Anon.
@@sagebrushrepair I had two boards with this problem , Spent hours solving this problem. Glad it helped some one :)
As a machine repair technician, it is very easy to teach someone how a repair should be done, it is much harder to educate someone as to what CAN be done. Sometimes things just need to be made to work, and work NOW. good work sir.
I completely understand the decision here especially without schematic. Schematics should be free and obtainable for everything to save the environment.
The reason why schematic is not available to be obtained is because to avoid counterfeiting.
@@fikrinoh1135 The main reason no schematics are available today is because no manufacturer actually wants the customer or repair shops to fix their products. If it's broken throw it out and buy a new one. A few decades ago this was different. That might change in the future if governments around the world put laws in place that forces manufacturers to design electronics with repairability in mind. Freely available schematics, cheap spare parts, no more glued down internal batteries in smartphones etc. It would be good for the customers wallet and we would also produce less e-waste that pollutes our planet.
@@troemich yup, totally agree!
@@troemich Totally agree, except the part where it would be cheaper for the customer... To make the devices repairable, they would necessarily have to be built to higher standards to, a) have longer lasting parts, and b) stand up to the physical abuse of being opened, repaired, and closed over and over again. That kind of quality construction costs money... There has to be a happy medium in there somewhere. ;-)
@@robertcartier5088 You misunderstood my post. I didn't mean that every device would need to be a quality device and cost a few thousand bucks. Considering that most Notebooks today even the cheap ones can be opened quiet easy, I mean you see Sorin do it often, repairing them wouldn't be so hard. If the manufacturer has to sell spare parts for a fair price and needs to release schematics to the public, devices could be fixed easier and faster. Why buy a new mainboard or even a whole new laptop if some repair shop could fix your broken board with schematics available. Of course not every fault is fixable but a lot more than with no schematics.
Fixing stuff with schematics in hand would be cheaper for the customer as the fault could be diagnosed and fixed a lot faster.
Mainboards and special touchscreens for laptops sometimes are way more expensive than what the whole laptop cost a few years ago. Even simple parts like the plastic housing are sold way overpriced or not at all. Not worth repairing. If spare parts had to be sold at a fair price and for at least five years, fixing them would be cheaper for the customer. Of course laptop manufacturers would need to rethink their strategy of releasing a gazillion different laptop models each year. A few models per manufacturer and new models when better tech comes around.
Smartphones used screws and plastic clips not even a decade ago. Then they started using glass and aluminium as material and things got glued down instead of screwed down. Nowadays you can't even swap out a dead or dying battery from a smartphone without fighting glue. Unless you buy a Fairphone.
Ugh i hate asus laptop
Hi sir.
I have an Asus x553m It just went of, can't charge or turn on. Wen I plug it to charge and turn it on it just shows a green light (charge light)on led and goes off. Wat could be the problem with this one. I tried removing battery and waiting for one minute and press power button, but still couldn't work.
Please help.
flash the bios
@@Customer22374 how do I do it.
And where is it located exactly?
@@simategeoffrey.s8923 google it sir
Ok i have read through the comments but dont see anyone ask the question. There is 19v input to mosfet and about 3v on the gate which should be enough to make it switch. If the output is not 19v then the mosfet IS faulty right? Why do you say it is fine?
the mosfet is switching the same voltage on gate . if the gate have 19V it will switch the 19V input to 19V output . so mosfet is fine . it can be faulty if no voltage at all on gate with respect to making sure no short to ground . so if all good and no short but mosfet has no voltage at all on gate or near to zero you can ay at the point it is faulty , you can replace it or you can short it which is simple and easier and it will do the same job
Thanks God, the Master is back !!
Why don´t you checked the second mosfet? It´s a common fault, this P0903BEA mosfet goes to short...
I checked your Videos, great but it would be better in English...
I'm glad you are back Sorin, I have missed you
Hey Sorin, do you know the name of that clear plastic film or tape covering the board at 3:38? I know there's also black one but where can i find these things for sale? Thanks
Had this same laptop generation. Laptop will only turn on if plugged on the AC outlet, will not charge (stuck at 88%) and turns off when you pull charger out from the wall . I opened it and checked its internal battery and it's fine. Plugged a replacement battery and same issue. Turns out that you have to reset the battery by turning it off, unplug from wall, press and hold to power button for less than a minute, plug it and turn it on and uninstall the ACPI something from the device manager. Rebooted and system reinstalled its drivers and issue was resolved.
Thanks!! You have helped me a lot, I had the same fault that you show in an ASUS TP300L. The same Mossfett after the connector, which has no trigger current.
I've bypassed it and at least the laptop turns on.
Let's see if someone can help me, novice doubts come:
- Can the laptop work without that mossfet?
- How can I continue looking for the fault, any suggestion of a component that usually fails?
All the best!
Nice to have you back Sorin! I joined your Discord server and amazing how so many people are willing help beginners like me there! Cheers!
I asked in the other video what those mosfets are for? i well understand its to turn on/off the charging/power, arent you concerned you are removing some of the safety features as turning off current incase of overheating, disconnecting battery if charging fault or overheating, or something 3rd that could be possible dangerous?
I mean, im Electric primarily, if a emergency button fails we dont just make a bridge :P im just curious if you know the function of those mosfets, atleast there is no risk of battery fire, the computer burns out totally on next error because of missing safety feature or similar? :)
Not attacking you or anything, just curious (ive also seen the voting on rights to repair SB 5799
, where the opposition said about risk of fire ect would be reason not to vote on it in America).
Did you ever seen Madagascar? ruclips.net/video/Bumx4AerJUQ/видео.html Thats how you fix a emergency button :P
@@electronicsrepairschool even your comment is smart but in sarcastic way . wish if all teachers or most are just iike you easy and simple . you have a good heart combined with a very talent smart skilled man . God bless you . i learned alot from you honestly and that's helping me a lot into improving my skills and income in my own business ( computer repair ) here in Canada .
Yes, thank you ive seen them all, my daughter like them, i guess the mosfets are just there for show then :) thank you for the clarification ;)
It’s always a pleasure to watch your videos. Really inspiring and helpfull to diagnose without schematics. Great job !
Excellent repair and hints for fixing laptops easily (at least some faults)! Finding that mosfets driving signal back could be pain in the a... 👍
Hii
I have exactly the same model of ASUS X540N that I bought a month ago
Lastweek it reached 0% i tried charging it but it dd not show life. What could be the problem with it
Your response wil be highly appriciated
bypassing that mosfet its not a good idea always because you will lose charging on the battery
Do you have any tips? I have a similar one with this problem and indeed it will not charge after bridging the mosfet. Thanks.
Happy new year Sorin and welcome back! So, is the mosfet faulty or the driver that drives that mosfet?
January is boring because every one is playing with there new laptops and other toys.. by the end of February or march they have broken them and now want them fixed.. or the new has worn off and they realize they like here old stuff better.. Thanks my friend.. this was good.
the asus are worse ever laptops always issues with them never buy one just by mac or dell or msi
I had one of those Asus laptops. It was crap. No LED's. The plastics was crap and the motherboard was tiny. Crap performance.
A pleasure to se someone like Sorin go through the logic to find where the problem was, OK he didn't replace the MOSFET but like he says, its just a switch. and he got the laptop working without it. well done
So glad to see another video from you, does not matter how you fix the things as long as they work normally in the end. Thank you for your work
Sorin is back!! ✌
haha, suuuper, esti roman! In episodul acesta mi-am dat seama cand te-ai incurcat si ai zis ca even february will be "la fel" :)) Faci o super treaba Sorin!
daaa e roman :) are clipuri in care se aude ca vorbeste romana.
i-am spus a faca cateva clipuri si in romana, dar nu mi-a raspuns pana acum :( pacat ca sta in Anglia
Asa mi-am dat si eu seama ca e roman cnd l-am auzit vorbind in cateva randuri.
I think first mosfet's G - S was shorted. they have same voltage and Gate shouldn't have 3V.
Mr Sorin your Dodgy way is better than the Schematic way!Less time,faster and the job is done!I visit your channel every day for new videos like this!Thank you again for your time and knowledge you spent with us!
THE BOARD IS SCREAMING FOR HELP... HELP ME HELP ME!!! :D :D GREAT!!!
Yess he is back.
Thanks again it’s a nice try to find the problem without being doggy. You are great make it work almost every time 100%
Hi! I've found your video extremely useful! I have an x540N with the same board. It can be powered up via ac adapter, but it doesn't charge battery. Also, the battery has around 60% charged (I can see the measurement on the BIOS), but the pc doesn't turn on with battery only. I have around 12v on battery (measured with a tester on + and - on batteries). What could I check? Thanks a lot!
Is this costs a lot? Pls answer me as fast as u can i rly need help
In the past, with a dead laptop, I have shorted out the mosfet myself and everything worked fine. I now have two of the same laptops, (Asus). Both work fine with the charger plugged in but die instantly the charger is removed. I have tested the battery pack with a 12 volt car headlight (actually 4 bulbs in parallel), and the batteries are good. So it's not the batteries, it could be the BMS within the battery pack, but I don't know. I have ordered a replacement battery pack just in case.
Any chance of a video on this topic? Please....
Hi mate. I have ASUS GL703GM i7 8750h cpu and gtx1060 6gb video chip. Was told by technical centre that due to short circuit I have to replace the motherboard. I have seen the videos on your channel and I am really impressed by your experience and professionalism!!! Would you be able to help me to fix my “baby”? I am in Melbourne, Australia. I can ship my laptop to you. Where are you locating? Thank you. Alex.
Hello 👋. I have an Asus laptop, model k555l with x555ld REV .3.6 main board. I had connected my laptop's cooling pad using a 9-volt and half-ampere adapter, but I wasn't paying attention and the cooling pad was also simultaneously connected to the laptop via the USB port. Now my laptop turns on, but the laptop screen shows no sign of being on. In your opinion, which part has been damaged by this simultaneous connection of the cooling pad adapter and the connection of the cooling pad via USB to the laptop?
I started at 20yr old to to have an AS Degree in electronics and not I'm 74 and still learning to ID the SMD components by watching you name them as you test them. I still have a steady hand to do the micro solder with your help of showing the componants and how you test them. Thank you.
LED POWER AND INDICATOR LIGHTS
Asus X351 U, UA, UAK, N and several other letters.
On the front! Left side! Directly below the left CNTRL key on the keyboard! Follow a straight line towards you, from the left CNTRL key and jusssst barely over the front edge is the lights, it'll have a WHITE LED on the left and a RED or ORANGE as they call it on the RIGHT.
Let there be light! ;)
what are the differences if you short the mosfet and if trying to figure out what is faulty ? anyway thanks for the video.
Its time , the difference is just time. Because at the end HE will fix anything.
SUre there seem to have so many different designs, I was looking for the chip that drive the 2 mosfets and did not find it. Now you say there is none, that induce a difficulty I suppose (to understand how it works) . Nice boring job anyway . I did show some videos to a friend, an old electronician that feel like a "purist" and his hair where dressed on his head. That said in the end he was very bad explaing things, and gave me very poor advices or advice inadpted to my very low understanding of those times. Hate occur then, too bad ;)
Thanks Sorin knowledge & entertainment . Bargain . : - )
more updates please! we love you sorin! :D
Finally Sorin is back. Need daily videos... Good to see you
Thank you
@@electronicsrepairschool I really appreciate your work Sorin. You are amazing and you share with us your passion. I never touched a solder iron since I discovered your channel. 3 months later I'm looking for dead laptop on ebay and others, and I'm able to fix them... That's incredible and you make that possible... Again, thank you sir!
Sorin explains and talks in a way it's very easy to understand and follow and learning. And he has some good innovation. It's really great and I think everyone is super glad you taking your time to do this.
hello sir. from philippines.. what is the effect of removing that mosfet to the laptop? is there any side effect? why is that u can just change a mosfet instead of soldering? you know it bother me this question and im looking forward for your answer. thank you sir
Just saw your question. Since no one has answered, I'll do my best. As he said, the MOSFET in this case was acting as a switch for protection. If something goes wrong with the main board, that MOSFET won't switch on because the other circuit driving it senses that there is a fault and stops the 19 volts from damaging any other parts that are under too much load during the fault condition. What he did was to put 19 volts on the output side of the MOSFET and he could see that the laptop was trying to start up. That means there is no fault on the rest of the board. The sensing circuit is faulty and only *thinks* there is a problem. He jumpered out the MOSFET so the 19 volts was on all the time which is like the sensing circuit saying all ok all the time. The laptop ran fine because there was no other fault. If there is a fault in future, such as a short circuit in a component, that component or part of the circuit board etc may be damaged since the protection can't work. It still might be repairable even after that but maybe not. Still, it is working fine for a small cost to the customer now. I would definitely do this repair too since sense circuits are complex and often tricky. I would tell the customer though and they can decide - have it now, cheap fix or pay big money for a new board or complex repair. Unless it is very new, customer goes cheap :)
Hi, answer is this laptop will not charge battery and will turn on itself.
Sorin, It would be nice if you summarize the things at the end! Sometimes its very hard to follow your train of touts! After tinkering for half an hour you suddenly decided to bypass the mosfet. I didn't learn much from this example. I don't mean to criticize you as i very much appreciate your willingness to help others for free and admire your skills! Thank you!
watch rest of his videos and older videos and you will know exactly why he decided to short it , simply cause it is a long story to be digging deep to find the cause not worth it when the solution is simple and easy . to learn much you have to start from the beginning and watch all his videos , don't skip and you will find the answer yourself . Good luck
@@Customer22374 Thanks for reply! I don't skip but he does becouse it's natural for him!
Hi. I want to request you can you please repair my dell 7737 motherboard which were burn by coffee fall. And a technician in my country mess up everything to a motherboard. Can you please help . I am not rich to buy a new one.can you please as help?
at 5:00 you verified if the voltage and it's 19.5V. If mine shows 0 on that side(as in the video) but if i measure from the behind it gives 19.5V does it mean that's ok ? Does the current need to travel on the back of the board also?
Hi, I got tha same computer but with different problem. The PC switch off by itself; sometime it's happen after few minutes, sometime after hours but always without give me any kind of notice in advance; it just goes off. Isn't a problem of temperature because while the PC is on, a dignostic software installed show me that the motherboard temperature do not overtake the 33° C and the CPU do not overtake the 40° C. Where the problem could be and how to solve it?
hi sir.. i have a asus laptop.. board no x450ubr.. the first mosfet getting turn off after 1-2 minutes when i probe it.. gate voltage is 0.. what doy you think? .. bad charging chip?
how to bridge MOSFET? I cant clearly see in the video sir
What a fuc**** job repair. If you don't know how laptop management system works, it's better you'd go repair dish washers!
Sorin are you based in the UK? I have a Asus gaming laptop which will not power on, not water damaged, psu works, removed bios battery, no power. Do you have a place in the UK I can send me laptop to you for repair?
That "laptop" is so empty that they put the fan in the middle blowing from distance to a piece of scrap metal they called heatsink. Useful like a laxative when you have diarrhea.
Why would my laptop be overheating ??😂
Upload more ! we missed you Lol .
iar dupa ce se inchidea ecranul de la laptop.. incepea sa se incalzeasca asa de taree.. !! si ventilatoruu sa se auda asa.. de taree.. ATENTIE !! LAPTOPUL ERA NOU !! nu a fost umblat in el.. avea doua saptamani :)
I have recently purchased asus fx505dy laptop last night i put the laptop after shutting down in morning when i on my laptop it is not working and no charging i go to the service center but they say there is liquid damage. They will replace mother board i saw the board there is no damage only some register/capacitor oxidised what should i do. Help me out sir please
Hi Sorin you may think that the jobs you do are boring but to a person just getting into helping to fixing computers your videos are a great help even if you do not find and fix them in the most conventional way . I have a Question when you say fix a broken truck to a chip with a wire why do you use such a small wire does it not increase the resistance to the chip making it extra hot at that point some times the the width of the soldering wire you use looks more the right size finally what is the size and make you use many thanks a avid viewer
thanks for being back on youtube. I follow you very carefully ... could you sometimes make videos of TV repairs?
p.s: in this video it could be some transistor that drives some "secondary" MOSFET that goes to drive the two main MOS ... maybe.
Thank you, Angelo from Italy.
scriu acest caz.. pt caaa.. am fost cu laptopul in 3 service-uri din Iasi.. (judet: Iasi) si nici unul nu a fost instare sa spuna ce are laptopul !! toti mi-au rescris din windows.. driverul pt fastboot si atat.. (laptopul.. nu are nimic )
„I tried to find the problem“… but finally the dodgy eastern european mentality did win. 😢 but nice to see it fixed.
I wanna chat with you
because i have power on problem x541N asus....
It can't switch on proper
hi, how do you find faults without patterns? Congratulations. I'm starting to fix something again. I still have instruments including a fluke 87 III multimeteo. Is it okay with you for measurements? Thank you
my asus cor i5 laptop did not turn on but only f2 or flight light is on after a 30 to 40 min. and the other thing is the power button light have a vary deem light. pls i need help.
Need this. I will am determined to open my laptop this time.make it or break it but will never bring it to the technician again... The more I bring it to them the issue became bigger.
This is very interesting to watch. I have an Asus K50 AF laptop that has the same symptoms.👍
Salut, Sorin :) uite.. am o intrebare pt acest laptop :D :) am vazut acum ca la sfarsit dupa ce ai terminat treaba si ai conectat incarcatorul... laptopul a pornit.. asta fara ca sa mai faci.. power on din buton de la tastatura.. ?? pt ca la alte laptop-uri treaba asta nu se intampla :) ??
Hello sorin we are fans from the Middle East can you put Arabic subtitles
Asus x541ua after removing the battery directly power on or off
Make it easy so that we can earn more. Newbie here trying to learn, watching all your videos.
What was the problem of this laptop?? Because am having the same problem.
Great Job Keep it UP !!!! Thanks master sorin keep uploading video i’m still learning 😁👍🏻
Hi can anyone tell me how to replace ram in Asus vivo book x541n please
Asus Vivobook S430 fa i5 motherboard available?
I bought same laptop and it has a same fault lol fixed thanks to sorin :D
The calibrated fuse comes to the rescue once again.
mine is an Asus X541N with the same problem and also a busted batter
Can you tell me what can happen when this motherboard is only plugged in and when it is on battery it does not turn on?
did you figure it out?
where can i get a motherboard
eBay ?
I have learnt so much from you Sir, thank you.
Not boring to me.. Thanks for the video.
Its the second fet there Sorin.The small one.
So the MOFSET is proportional? The gate had 3.3V so shouldn't the MOFSET just pass the 19.5V (or not) but it was passing just 3V if it's a just a switch how was it allowing a reduced voltage to pass? (unless switching really quick :)
Do anyone knows where is located motherboard little battery ?
Hi Sorin good to sèé you back at work 👋🏼
ASUS X541S-XX154T with No Power that had a Short on the Main Power Rail which was due to a bad large Cap on one of other Power Rails and once the Cap was removed the Short had gone but still No Power coming through the first 19.20v Charger Port MOSFET with 0.00v on the Gate.
The next thing was to check the Battery which was found to be completely dead with 0.00v Output so each of the 3 Cell Wires were removed from the Battery PCB to Charge each Cell up individually to reach their maximum Charge Levels of 4.2v and once Charged reconnected back up to the Battery PCB but still there was No Power on the Battery Output Connector so a Replacement Battery was ordered in, once the Replacement Battery had arrived it was connected to the machine which would Power Up the Main Board but still No 19.20v Charger Port Power coming through the MOSFET with 0.00v at the Gate with or without the presents of the MOSFET which still wouldn’t Charge the Battery neither would Windows sèé the attached Battery once booted up into the OS also Jumping the Charger Port MOSFET would supply Power to the Main Board but it still couldn’t Charge the Battery.
My question now is could all of the above be down to a Bad somewhat Damaged “ENE KB902FQ C Power Management IC Chip” which this particular board has????
Any Help or Suggestions would be Muchly Appreciated.
Thank you Sir ,did the same to Asus X541SA it worked for me after I watched this video, Thank you a million ❤.Stay blessed
I am having a similar issue but with lenovo z50-75, whereby I am having no output at the second mosfet. Is bridging feasible here? By the way I have removed a red hot smd resistor with marking 100(10 ohm).
So do you recommend me doing that or going to a repairshop
well the repair shop i went said they won't do that. Maybe with luck i can find one like that.
@@kingnotora2660 i have 2 laptop with the same problem. But it turns out that it qas only the charger for 1
@@JamRoleStudio for mine they said it's the power that is not delivered correctly, but well it's kinda my fault, I did open it without thinking of static electricity , and now something broke (at least it's not the cpu)
so you short the 1st mosfet,from source to the drain and to the gate?
You know what I like about Sorin? Every time he runs in to a problem he can't figure right away. He just pauses for a few seconds. Takes his Vaping apparatus. Vapes liquefied Colofonium a few times and then you hear him say...I know what is wrong with this thing...! Does anyone know where I can find this vaping liquid brand.. :)
If the main power rail goes directly into N-MOSFET, then what is switching that MOSFET on? If MOSFET is switched off, then there is no power if the battery is also not installed. So what is controlling the gate of MOSFET then?
SIR I HAVE AN ISSUE WITH SAME BOARD. BORAD SHOWS POWER LED GLOWING WHEN CHARGER CONNECTED, SHOWS THE POWER ON 2ND LED WHEN SWITCHED ON. BUT NO DISPLAY NO FAN MOVEMENT. WHAT MAY BE THE ISSUE CAN YOU PLEASE SUGGEST ME? THANKS