Just a quick thank you Sorin.. I just turned 69 years old on the 6th of may and you have taught me so much over the last two years that I can never repay.. Carry on my friend.. and thanks again!
@samsonkasumba783 жыл бұрын
i have fallen in love with this guy just by watching 1 video...i wish he was my dad...we wud be repairing stuff together...i have gone all over youtube and back to find someone with good repairing skills to learn from...i guess i just found my guy
@danielsims57714 ай бұрын
You and I are in the same Watsapp group! I love this Man too. His personality is so fascinating.
@adrianteo58443 жыл бұрын
Multa sanatate.. sunt foarte onorat sa te urmaresc.. as fi dorit sa te descopar mai de mult timp.. dar niciodata nu este prea tarziu..am urmarit aproape toate reparatiile .. WOW.. am invatat atat de multe lucruri utile.. un adevarat PROFESOR
@electronicsrepairschool3 жыл бұрын
Multumesc :D
@danielsims57714 ай бұрын
Honestly I love you Sir and I have seen that many people love you too because of your personality and great skills. Thanks a million times
@kqsystemzrecordings Жыл бұрын
this was the best video I seen for this particular issue.
@ToolboxDiaries3 жыл бұрын
welcomeback Sorin.. from philippines here..
@achcom3123 жыл бұрын
Gud am sir need pa ba ng laptop tech dyan ,,apply ako
@SiETechNotebookReparatur3 жыл бұрын
Hi Sorin, thank you for being attentive to this second-mosfet problem. However, while a gate-short can indeed give this failure, in practice they are almost always drain-source short. The reason why the gate drive is then turned off by the BQ-IC is the MosFet Short Protection feature. Quote from the datasheet: 8.4.18 Inductor Short, MOSFET Short Protection The BQ24725A has a unique short circuit protection feature. Its cycle-by-cycle current monitoring feature is achieved through monitoring the voltage drop across RDS(on) of the MOSFETs after a certain amount of blanking time. In case of MOSFET short or inductor short circuit, the over current condition is sensed by two comparators and two counters will be triggered. After seven times of short circuit events, the charger will be latched off and ACFET and RBFET are turned off to disconnect adapter from system.
@AnonymousRepair3 жыл бұрын
Yip 100%
@asv57693 жыл бұрын
to be more clear to others, ACFET is the first MOSFET and RBFET is the second input MOSFET.
@IsaacOLEG3 жыл бұрын
Hello, I amtrying to understand the Mosfet drivers, why an how (find a very neat complete curse on Power Mosfet drivers kzbin.info/www/bejne/pZfCp2WEastqbpo) I get about half of it, lets say... what is meant by "a certain amount of blanking " please ? thanks. I want to understand what makes the charging port closed in case of first mosfet bridged drain-source. I undestand that due to the different possible configurations there is no universal answer. but I have that on an Asus X540L . thanks for reading me ,)
@adedeky89763 жыл бұрын
@@asv5769 TERIMAH KASIH ,, SAYA BARU TAHU JUGA
@premKumar-rw6kw3 жыл бұрын
What a clean Justification of the fault in pin point...Great Man
@MrDinakdakan3 жыл бұрын
Wow just like that, meanwhile I desolder bios reprogram with external programmer, good to see you back, need mroe vidoes
@ANASABUBACKER3 жыл бұрын
i used this method. worked perfectly. thank you Sorin Uncle.... GOD BLESS YOU
@randhawaharjeet34833 жыл бұрын
From the experience of your previous videos I thought that you will say it's a graphic issue. 😀😀😀. But a nice and simple solution. Thanks a lot teacher... 👍👍
@Mr.Smith_Mr.Wesson_andMe3 жыл бұрын
YES, exactly same thought 😎
@abcdude87842 жыл бұрын
I got all my satisfying repair experience because of your videos... Thank you
@arnoldeduardodesousatulomb63953 жыл бұрын
Hi Sorin am a big fan thanks for all the knowledge (South Africa)
@AbrahamFoamXgen3 жыл бұрын
You are like a magician. Awesome job.
@Vinnie2x3 жыл бұрын
Excellent Zorin! I've got several units with shorted mosfets that do not charge and look forward to you SHORTING the 1st and 2nd to Further Your Explanation. NICE! thank you
@kidsaccount45753 жыл бұрын
The good thing about Hp laptops- They have error blink codes on startup if there is an issue so trouble shooting is slightly easier for the end user ☺️
@labibleatarilesitedesatari67243 жыл бұрын
You are "ma petite madelaine de Proust" As usual it's a pleasure to see you Sorin. See you soon! ;)
@ZadaTec3 жыл бұрын
As Always!! The best man on KZbin:-) Question: Is there any way to flash recovery like this method with Lenovo/Dell ???
@KarenSmith-ef9kk3 жыл бұрын
Go look on sites if not you will have to make a recover disk from scratch with bootable dos formated disk, bios file, bios writting program and a modified .ini file to tell the board what to execute and write..you may just see a black screen while rewritting the bios, till after the computer reboots....ence the it's name is blind writting. There's plenty of info on how to make the .ini file on the net if you look around, that was how we recovered a bios back in the day...this is old school stuff from the 90's. Sorin's probably been doing it that way for years too.
@108Marlin3 жыл бұрын
Thanks for the video .great tip .learnt loads just by watching your videos. Thanks Sorin
@sleepwalker68253 жыл бұрын
Had one like this the other day Sorin ... When switched on No HP BIOS screen , Weirdly when I click ESC I would see "Pause StartUp" nothing Else .... Reflashed BIOS using Windows Key +B and BIOS Reflashed Fine . Got into Windows blah blah blah no problem ... Turned it off 20 minutes later Turned it back on Exact Same Issue .... Opened Her Up took out the Battery ( not BIOS ) Main Battery and Voila has Worked Fine Ever Since .... Also when the Fan is spinning out of control usually Does mean the BIOS is not Controlling the Fan Header too ... Also that was Windows Vista Not 7 Sir ..........Thanks for Vids Sorin Noel
@jbvtechnologies3 жыл бұрын
so good, good example man, when you get a higher fan spin , probably the bios fault
@brunosulikowski3 жыл бұрын
You are AMAZING. I wish I could ask questions about issues I have with my dead laptops.
@zomaardan3 жыл бұрын
Everybody in repair only take and dont give. You never get help. They dont give a shit.
@nakipelivan40073 жыл бұрын
Nice sorin its the professional man for this job thank you.
@hermoss13 жыл бұрын
Hi Sorin, Why didn't you think it was a graphic issue ?
@lets_just_say_im_innocent3 жыл бұрын
maybe it was because when the laptop comes on, the hard drive activity indicator starts lighting and blinking but in this case it must have not been that way and that would mean the laptop wasn't going past POST which usually means a bios issue. It's just a guess so dont take my word for it
@DetermineLyngdoh3 жыл бұрын
If it's a graphic issue, the backlight will glow, usb led will glow because there will be 5v
@electronicsrepairschool3 жыл бұрын
Because of the fan spinning at full speed, that's a sign of corrupt bios
@lets_just_say_im_innocent3 жыл бұрын
@@electronicsrepairschool I have encountered where the fan does not spin but the CPU and GPU (laptop) keeps getting hotter and hotter... dont know if it's a bios issue or something else
@enzorenade3 жыл бұрын
@@electronicsrepairschool Thank you Master🙏
@OverlandOne3 жыл бұрын
I learn so much from watching your videos. Thank you.
@ohmware20203 жыл бұрын
nice job, still waiting for videos doing bios programming using the harware method 😁
@tablenovo103 жыл бұрын
Hi, I'm back had a little problem with my tablet or KZbin, I'm thinking KZbin, it delete my subscription, all mixed for now, this is a great channel, I'm all smiles again 😊😊 👍🇦🇺
@olivermate93533 жыл бұрын
Cool Will test out soon on a HP .
@tovilipolycarp3416Ай бұрын
Sir are you buying this bio on line? This is amazing..Thanks👍 for the tutorial..🙏
@lavelani26743 жыл бұрын
hi dear friend, many thanks for your great videos, i am following your videos since you have started. I do repair electronics gadgets such as laptops.tablets,game consoles, Mac-books etc. your videos have inspired me geat deal . your understanding on any electronic circuit board is great, please give me advice how to upgrade my knowledge to your level.
@KarenSmith-ef9kk3 жыл бұрын
Nice job, reflashing bios without showing off, like those, that think it makes them look cool removing the chip from the board for reprogramming.
@AnonymousRepair3 жыл бұрын
😂😂😂😂😂😁😁😁😁@Sorin I am not a hater nor do criticize your work but do like stuff to be repaired the right way, If you short both mosfets it would still not charge because the BQ IC sense between the two mosfets as you can see on your diagram that you have showed. The BQ IC is quite a smart device, It will shutdown the two mosfets just to sense if one of the mosfets is shorted by using the sense line between the two mosfets, I have tried it before. thank you for your videos 👍👍👍👍👍
@jbvtechnologies3 жыл бұрын
So true man 🙌
@mjarefi3 жыл бұрын
Excellent, I had to open the entire Lenovo laptop yesterday because of the BIOS programming
@MKUltraTutorials3 жыл бұрын
Friend please do a video on your thoughts on Right To Repair.
@OnStageLighting3 жыл бұрын
Looked at a laptop recently that appeared to come on, but nothing on screen. fans, LEDs, everything but no backlight/picture. All other rails OK but couldn't find a voltage at screen connector so assumed something up with screen circuit. Owner didn't want to take it further so the job stopped there. I wonder what would be the diagnostic difference between BIOS issue like this vs. such a screen issue?
@Mr.Smith_Mr.Wesson_andMe3 жыл бұрын
I cannot remember exactly, but here in this case, it was not a power issue, so the Super I/O chip switched on all other voltages. In case of voltage error of the display or graphics unit, i guess there would be immediate shut down of other voltages, isn't it? Maybe someone with better background can say more wise words than me, the very young padawan 😉
@AnonymousRepair3 жыл бұрын
Use a usb keyboard to see if caps lock or num lock is working
@zx8401ztv3 жыл бұрын
Nicely recovered sorin :-D Do you know where the code is for the B key? protected area of flash or inside the super i/o ?
@abdullahxo16893 жыл бұрын
Hi Sorin! Your channel is full of awesome videos! Thanks! Why you did not check with external monitor to see if it works?
@fareselamine81153 жыл бұрын
I was thinking the same thing as well! Maybe the laptop does not have an HDMI output? I was also thinking why not test the voltage around the monitor's cable, or even unplug/replug it and if all else fails hook up an external lcd panel to test with. I don't know though, maybe that requires compatible driver with the external monitor?
@eldoradocryptoz3 жыл бұрын
Your level of experience Sir Sorin is outstanding. Pls tell me ur biography when you have the time. I want to be able to tell my kids about Master Sorin from whom I've learned so much. Through you i've become electronic Master myself. Thanks alot for everything.
@sergelavallee9133 жыл бұрын
Good to see you again Sorin! And please come more often. I'll tell you why. You see when i open my shop and repair, instead of repairing while listening music, it inspire me to repair and listen to your videos while i'm working. So if you don't put more videos, when i repair i have to listen old videos of yours. It helps me. It put me in the mood you know? So please make more videos. Thank's Take care Sorin. I wanted to flash my bios of my compaq presario but the firmware is not on the net anymore. Not available anymore. Can i save it or not? Thank's
@B9NE3 жыл бұрын
I'm sure if you look up the specific bios you have you might be able to find an update official or unofficial. If you can go to the bios menu you can see which one it is.
@sergelavallee9133 жыл бұрын
@@B9NE I know what kind of bios but on the net the companie discontinuated the firmware so i have a PC with only the fan running cause the bios is dead. I have only one solution is to find the same motherboard defect on something else and take the bios from it. Beleive me i've tried to find that firmware but it does not exist anymore. I can't go the the bios menu, black screen, bios is dead. Nothing start, the PC won't start cause it's the bios that orders it to start and the bios is dead so only the fan turning. Thank's anyway.
@cecilmiller2387 Жыл бұрын
Thank you Sorin this helped with a solution to fix my Dell Inspiron 1440.
@joshclark64492 жыл бұрын
Would love say yeah it works but sadly did not work for me but thank you this helped me get an understanding of it all
@andyturner17273 жыл бұрын
Hi Sorin you are such a experienced technology and wise honest person . We need more people like you in the UK . Thank you . ; - )
@prabhashgupta95823 жыл бұрын
Very nice video I am always confused about bios flashing but there is ALWAYS something to learn.✌️
@shaunmorrissey73133 жыл бұрын
I learned something today, that makes it a good day.
@sdf_mx993 жыл бұрын
happy mothers day good day evryone from mexico
@rickyhadley27972 жыл бұрын
well done you explain a lot my question is do you reinstall the old ram and if you do do you clean it with an eraser?
@phinehasantwi96153 жыл бұрын
Thanks a lot for your educative videos, am able to repair well and fast now...
@REDDOGLewiston613 жыл бұрын
That's funny I have to hp's on my bench right now that are doing the same thing. I will try that bios utility.
@JunPVlog Жыл бұрын
That's nice tutorial sir thank you for sharing this
@therealspixycat3 жыл бұрын
The bq chip reads the current through the shunt resistor and kills the second mosfet: I think the sole purpose is to limit the current to a possible bad or shorted battery to prevent a possible fire?
@denizgoksel3 жыл бұрын
Nice fixing thank you for sharing👍
@AsanteNgwira-sv5mv Жыл бұрын
Was your laptop also powering down and on before u rewrote the bios
@aimelapierre57053 жыл бұрын
This one wasn't to hard of a repair nice going sir
@justinkv023 жыл бұрын
thanks friend,good info
@Bill-lt5qf3 жыл бұрын
Woah, i had no idea HP had this feature. Good to know.
@robertisaacs51223 жыл бұрын
Enjoyed the video. Thanks for your time.
@MAYAPOGS3 жыл бұрын
your the legend sorin..
@antondewaal85093 жыл бұрын
Thank you for sharing your knowledge. Lots of respect to you for taking the time to make these videos. If i may prompt you two questions I would appreciate it. 1. How can I get into Bios recovery as you did with the "B" key on the HP laptop to update the Bios. This Asus laptop keeps booting up in a Bios loop. 2. If suspected that the circuit is down to ground, how can I eliminate which component is the bad one. Nothing is getting hot except the processor, but the motherboard is removed from the laptop and all plugins removed.
@claytonmorgan86253 жыл бұрын
Great recovery Sorin, keep up the good work!
@superherodude66653 жыл бұрын
This is very helpful,i have the same problem now and im having a problem making my usb bootable, like when i download the bios it doesnt show me the option to create a bootable usb just the location where you will place the installation and thats it that is why i cant continue anymore, plus im not sure if windows+b will work for me or just b only, my laptop model is 14s-dk0136AU
@elyasgarcia2509 Жыл бұрын
sir how do you remove the customized splash screen and restore the default HP Logo during POST much appreciated for the help
@ghislainriou95603 жыл бұрын
Good day Sorin what is the model of the dc power supply you using for testing thank you and good work as usual . Have a bless week to your team as well ;) looking forward to your reply.
@onutuioan21123 жыл бұрын
Nice videos mate, I really love them. You are the perfect teacher that I never met to the university. Anyway, what should you do if you have the same problem on the asus laptop, because on the asus laptop you cannot update the bios the same as on hp laptops. Should I reprogram the bios manually, I mean to unsolder the bios chip and try to reprogram with the help of some flashing tools?
@alaster333 жыл бұрын
Hello Sorin , great to see your going strong , I just wondered as I have an unrelated fault on an iPad mini 3 , I soldered a new charging port and screen connector, it charges but only on one of my 5 working cables which has got me scratching my head , I changed Tristan chip but put old one back because not even one cable worked ....PS I have tried new battery too, I wondering if you had any insights please ?!?
@dspcomputers21 Жыл бұрын
what exactly were you coping? i thought the number should be on the board sir
@pityuiam13843 жыл бұрын
I usually end up desolering the bios ic, and reflash on external writer.
@Mr.Smith_Mr.Wesson_andMe3 жыл бұрын
And? You've been succesful? I hope it was.
@pityuiam13843 жыл бұрын
@@Mr.Smith_Mr.Wesson_andMe yes... the only difficulity to localate img with me cleared..
@Mr.Smith_Mr.Wesson_andMe3 жыл бұрын
@@pityuiam1384 you mean, to find the image of the bios file was difficult?
@KeiLin113 жыл бұрын
That was amazing...
@pityuiam13843 жыл бұрын
@@Mr.Smith_Mr.Wesson_andMe In some cases... the worst like toshiba, when you get .exe file which is not extractable.
@DirtyReaper Жыл бұрын
I make a HP tools Bios update usb drive but it still fails or doesn't see it?
@kirkoclive6 ай бұрын
Same here. theres just something wrong with HP
@khalkhal23722 жыл бұрын
Computer comes on but no picture. Why haven't you suspected a display issue at first?
@idmann172 жыл бұрын
It does not sound like the operating system is loading...
@StAlKeRrEpAcK3 жыл бұрын
The same for hp pavilion dv5 but mine only on hp logo no picture but when on win 7 logon there is
@j0eb0t05 ай бұрын
HP 348 g3, turns on, but no display. caps lock no light + not blinking. happened after automatic HP bios update. suspect bios corrupted. tried using usb recovery as video, with win+b, win+v, v, b, but it does not kick into bios recovery at all. any idea? feels like board problem, but it happens right after HP bios update.
@wisher21uk3 жыл бұрын
Sorin you are the man You save people hundreds of pounds you’re a breath of fresh air
@BrandonCasillas-e2m3 жыл бұрын
Does this works with all laptop product or just for Hp laptops
@abdulagoro87613 жыл бұрын
Thanks for sharing your knowledge I’m a fan of your video shows I have aToshiba satellite laptop the power comes on with the logo and it’s booting up what’s the best step to clear this fault ?
@laptopDoctorKZN2 жыл бұрын
Hi Please can you do a video about how to check if bios corrupt or when to reflash bios or ec
@gikan10003 жыл бұрын
Mate, do more videos. Im watching you always before sleep, you're cool :)))
@rodwellmatsaure72172 жыл бұрын
Thank you teacher 👏
@sageauk Жыл бұрын
will this work with hp desktops (flashing the bios)
@sandy12348533 жыл бұрын
Hi Sorin im currently having turn on but no picture issues also iv had it turn on and run before but it seems random but now it wont boot up at all just lights on fan will spin for a few seconds then they will stop and the lights stay on also the gpu gets warm unsure why the cpu power mosfets dont allow any power through they have 20v on one side and 0 on the other but its no short im starting to think its SIO or athe bios because everything els is ok and as i said it has booted up before
@Arvidje3 жыл бұрын
This maybe sounds strange, but i have had a laptop with the same probs, no display, fan spinning full, but it was the charger! So always try an another charger first.
@santoshmundepi29773 жыл бұрын
Is it possible in hp any generation laptop.which required reflash the bios .
@DugongGila3 жыл бұрын
Just a quick question. How could the bios go bad? I remembered installing the latest Ubuntu actually corrupted my laptop bios, but for this case it was still on Windows 7 and probably used it as a daily driver.
@SinsBird3 жыл бұрын
It can be many things, bad circuit design, especially power section, power supply going bad, failed update, even virus.
@DugongGila3 жыл бұрын
@@SinsBird Ah ok. Now I'm wondering if my old HP laptop that i sent for recycling years back was actually the bios issue, had similar case that couldn't power on and etc. Ah well, this is good to know.
@NiHiKata Жыл бұрын
Hi! I tried using the bios recovery from HP using the UEFi diagnostic tool but it says "unable to open the signature file". What should I do?
@irfansensoy59013 жыл бұрын
Hello there. I have an Asus X55VD model laptop. I wanted to install SSD and I wanted to install windows with usb. I inserted the usb and entered the bios screen, the usb did not appear in the boot options. I restarted it by enabling an option that was disabled from the usb configuration settings in the advanced section and the pc crashed. The fan is running constantly, the keyboard and the screen show no light or any sign of life. At first, the hdd light is on and off for 1 or 2 seconds, only the power light stays on. I can't get into the bios settings again. Normally I can enter the bios with F2, but after this event, I cannot enter the bios in any way and I cannot restore the settings. Please help me.
@richardsmeeton89103 жыл бұрын
Irfan that sounds like you enabled fast boot. On some ASUS and ACER models fast boot executes the boot strap before initialising the keyboard, so you don’t have chance to interrupt it with the F2 setup. You may need to remove all the boot device with Windows on to be able to get back into the BIOS.
@johnrodgers17352 жыл бұрын
hi is it the same for lenovo laptops with same issue? many thanks
@obedphiilamai3798 Жыл бұрын
What is 52a3?
@tomaszpluta58393 жыл бұрын
Just out of curiosity, how can the BIOS get corrupted? What can one do for it to get corrupted? Are there viruses that can temper with the BIOS? Also, can this be done on any laptop? I've seen plenty of your videos, Sorin, and you usually go straight for the graphics chip so is it an HP thing?
@AnonymousRepair3 жыл бұрын
I think some forced shutdown the laptop while bios was updating or the battery was to low, this doesn't always work and you would need to remove the bios and program it by a programmer
@npanda-em1cz2 жыл бұрын
Any idea for bios update without laptop screen corrupt
@Martin-ot7xj3 жыл бұрын
Hi there , it was perfect tutorial video . thnx
@therealspixycat3 жыл бұрын
What to do when there is a short from 19 volt power rail to ground and nothing gets warm? Run powers supply at 2 amps and a few volts. I can't find anything that smells or is warm. Any suggestion?
@Mr.Smith_Mr.Wesson_andMe3 жыл бұрын
Go higher with voltage/amperage
@therealspixycat3 жыл бұрын
@@Mr.Smith_Mr.Wesson_andMe what is a safe maximum amps that will not destroy the board?
@jbvtechnologies3 жыл бұрын
Go higher like 3A or 4A
@Mr.Smith_Mr.Wesson_andMe3 жыл бұрын
@@therealspixycat the board is already "destroyed". It only depends on where you inject the voltage and you know what you are doing!
@SinsBird3 жыл бұрын
@@therealspixycat What you're saying is impossible, something has to get warm or hot, it's multiple watts!!!
@tomjones41452 жыл бұрын
Fantastic video / thank you for sharing
@betohfinger8793 жыл бұрын
how u do that in a lenovo laptop...for there is no lenovo system bios update utility
@massyle51983 жыл бұрын
How did you know this was a BIOS issue, and not a screen connector issue or a graphic chip one for example ?
@jbvtechnologies3 жыл бұрын
there is no dedicated graphics chip on most of this machine, if there is no sticker saying AMD or NVIDIA graphics it means there is no graphics card...Again count the number of flashes and search online
@massyle51983 жыл бұрын
@@jbvtechnologies okayyy, but i mean that could be another issue (like the screen connector not working, or the screen itself) so i wanna know if there is a sign that tells us it is a BIOS issue
@incognitopassat71023 жыл бұрын
the fan was running at the high speed. thats the key
@massyle51983 жыл бұрын
@@incognitopassat7102 thanks mate 🙏
@jbvtechnologies3 жыл бұрын
@@incognitopassat7102 yes 🙌
@direx12573 жыл бұрын
I want to thank you a lot! I was just on repair of gaming Laptop Lenovo y700 and i changed first mosfet and he start working but no battery charging. After u sayd that second mosfet Can be a reson... I changed it and its work fine! Thank you a lot! 90% of what i Can i've learned frome you.
@nageshtagadur Жыл бұрын
my compac presario is doing same ,.. please help,..
@md.arifuzzaman6482 жыл бұрын
my laptop's fan does not move whenever i plugged in the charger. but indication light of the power button turned on along with charger indication. will this work on my laptop?
@Vincent572212 жыл бұрын
What about a laptop that opens and the screen just lights on but it doesn't display anything? How can I fix this? The laptop had fallen and the first time the hard disk was replaced 3 times after falling and it only works for a short time and fail. What might be the problem in this case?
@BiwisMAKOU3 жыл бұрын
does it work on HP 15-bs015nia? I tried but nothing appears on the screen. Yet technicians said it's a BIOS reprogramming problem
@ripe_apple3 жыл бұрын
Excellent Video, 73's
@chanchanwayuyab32442 жыл бұрын
same issue as mine but when i updated the bios its still stuck on black screen but the backlight is on hp hp logo is not showing
@kepongbudak76502 жыл бұрын
This only work in hp laptop?other brand u try it ????
@vk5ukkklaus3863 жыл бұрын
Hi, here I was blaming KZbin, sorry 😔, it was me, I loged in on the wrong channel, 👍🇦🇺