There's an old saying.You look u see, u read u forget, But u do and u remember. This is the best video of all to date as simulation gives u that hands on working experience. Excellent video.
@Trustsimo07
Жыл бұрын
Shorting the 5v was amazing.! ❤
@JonathanAnon
6 жыл бұрын
This man is a big fan of the weekends for sure.
@john.84
3 жыл бұрын
Hello SORIN You're the best Electronics teacher on KZitem. Thank you very much GOD bless you
@peterlethbridge7859
Жыл бұрын
Quite possibly the most educational video you've done. Thank you so much for showing us this.
@petswildlifeandmarine5778
3 жыл бұрын
I have already repaired 2 laptops from your lessons. Thanks so much
@johnoddvar1967
5 жыл бұрын
I think this is the best repair video i have seen.
@richardduque5168
6 жыл бұрын
You are the man, my beloved friend. Pursue your passion on teaching others.
@mmuller3233
6 жыл бұрын
Thanks, for me this is the most valuable video to date. I've learn't heaps and now I have a better diagnostic understanding to further appreciate your regular work based series.
@Brison1949
6 жыл бұрын
Learning such a lot you are a brilliant teacher.
@steveedwards7029
4 жыл бұрын
Hi I'm always watch your program ps i have a hp pavilion touchsmart b161 ea laptop but on the mother board i have a WiFi cable and two ribbons one of the ribbon is DDU56CTHOOO RIBBON THAT I'M TRYING TO GET PS CAN YOU PLEASE ME THE LOCATE THIS RIBBON FOR ME PLEASE STEVE
@oder4876
4 жыл бұрын
when the gopro turns off it seems like you have 4 armes Hhhhhh nice video & nice lesson .comes with a lot of skills wath need to know every beginner in that feild
@4EVERGR
6 жыл бұрын
All in one diagnostics video. Thank you alot !!
@awakedreamer1859
2 жыл бұрын
Thanks a lot for this video. It was very instructive. I'd like very much to see another one like this with other interesting common faults
@turkoglu7499
5 жыл бұрын
I watch new your videos ....but i wish to see before your videos...nowhere cant find that detailed repair videos ....I love your videos...i make better repair now thanks to you...now is 25.01.2019 i think watch your all videos...Thank you again and wait new videos from Turkey.....
@ilanbinkovitch6054
6 жыл бұрын
Sorin : Thank You VERY MUCH ! very educational video ! [ I am that stupid guy who tried to power up a Desktop mobo with the wrong pins, No POST and CPU very hot....and checked all voltages to find out they are all OK... only to realize he used UNSUPPORTED 1st Gen C2Duo in the 775. Mobo boots fine. now to flash a latest BIOS and ..to eBay. Love this ]
@edwardreid4524
5 жыл бұрын
I like watching you videos. I also repair laptops mostly gaming like ROG, Alienware ect. Just fixed a Qosmio Z70-b which had a short on the GPU voltage rail. Simple fix'd by removing the inductor on that rail and forcing the laptop to use the intel 4600 built into the CPU. Well done on some of your great bypass video. Always good to see someone who can also do it without the schematics.
@f1lab535
6 жыл бұрын
Can the 5v and 3v IC get hot when we plug the charger but is not a faulty IC? Maybe is getting hot for something else...
@thetiredtechie2704
6 жыл бұрын
I'm liking very much that new series you're making :D
@electronicsrepairschool
6 жыл бұрын
i start getting bored :)))
@pejmanbehbahani4612
6 жыл бұрын
I know how you feel, for the people that know this information, it is boring to go back to basics, but for the beginners it is actually very interesting. Thanks for the time you put into making this video.
@thierrybeginl
6 жыл бұрын
haha of course repeating gets boring for experienced people like you but it's always fun to listen how you do it :)
@sirjo22
6 жыл бұрын
Another Informative video from the Master,,. Can you also make a video about voltage injecting to find short on motherboard... looking forward for this... GODbless
@FlorinMindrut
5 жыл бұрын
Thank you for the good quality videos ! Mult succes in continuare :)
@yuanho2883
6 жыл бұрын
Very informative, great video. My favorite youtube channel. Thank you!
@rashh77
6 жыл бұрын
Very informative tutorial, I learn new things. I want you do this again with diffirent laptop model. Thanks a lot.
@thetiredtechie2704
6 жыл бұрын
Basically it's the same for "all" modern laptops (Acer, Asus, Toshiba, HP...) other than MacBooks. You have 19 V main rail and then power management chip is managing all smaller supplies and protecting them from shorts with smaller variations (basically shouldn't let you start the machine if there's a short on any rails). Macs are different with a few versions of motherboard layouts so you have to look into them separatedly.
@bonbonpony
6 жыл бұрын
If only they also standardized the power connectors... ;P They're all 19V, but every single plug is different ;P It drives me crazy urrghh ;P
@iam.masoudsamimi
6 жыл бұрын
Greatest so far as you said. Right on. Simulating is best coz you know it as you did it, and sometimes gives different result than other times. Repairing electronics is like a chess game fused with gigsaw puzzle, or trapping a mouse!
@radaplay
6 жыл бұрын
This one was very important video !!! keep up the good job
@knowledgebasekb683
3 жыл бұрын
Omg 😱you are just machine. That know every thing about it's action.... Also fabulous mentor. 👌👌
@rajendravijapurkar3526
4 жыл бұрын
hello, i have seen many of your videos.... thanks for educating me.... grateful to you..... god bless you.... rajendra vijapurkar
@zx8401ztv
6 жыл бұрын
Soren, the bios chip has the startup chip operating rom in one side and the pc rom in the other, that is the reason why it wont turn on, no code for the startup chip :-)
@taibyoub4316
6 жыл бұрын
Thanks
@opeyemicomputers5860
6 жыл бұрын
Very interesting, i have lot more ideas today on laptop board, Thanks boss.
@giorgostexnikos6976
5 жыл бұрын
thenks for the lessons professor.
@davidmessinger2784
2 жыл бұрын
Why not show us how to fix the charger??? I have spent many, many hours watching your videos. They are fascinating to a guy who started working on his Ham radio license at 10 in 1960 when we learned only about vacuum tubes! This new stuff is amazing!!!!
@em0_tion
3 жыл бұрын
Lovely demonstration 👍🔥
@user-sv7cb6so1d
3 жыл бұрын
Your greatest lesson IS this video at : 19:20 forward. cant even get " them " to go over this in school was told follow the text books pfffffffffff Books
@RichardHeadGaming
6 жыл бұрын
I gave a guy a quote to fix his car once, his reply was ouch thats high, you do side jobs at home? Ummm no this is my shop take it or leave it lol.
@sevelova1
5 жыл бұрын
good teacher
@sachinten03323
6 жыл бұрын
Sir i like ur videos very much. Ur way of explanation is very good. Pls sir could u make a video on LCD LED Tv PFC circuit explanation.
@thetiredtechie2704
6 жыл бұрын
Can you make a vid in which you'll make a teardown of that GoPro? Maybe you can help it :)
@junhanggodlaviosa2493
6 жыл бұрын
hahahaha "dont worry we have something to broke" i like that siri... lol
@yehtut3209
3 жыл бұрын
many thanks, sir.
@reynaldofigueroa3372
6 жыл бұрын
Great video. Like always, and yeah maybe you can fix the gopro video camera or get a better one. But anyway I appreciate that you are sharing your knowledge. Thanks
@sammyhenry4860
6 жыл бұрын
Hi master, I'm one of your subscribers, I'm also an computer engineer, I solve most issues with your tutoring, I'm really glad you make this happen, I have an issue with a Samsung N102SP mini laptop, when I switch it on it on with with fan spinning but not display just like the tutorial you just made on ram power supply and have checked the ram power, I found it okay and not ram issues or displays chip, please master what else can cause this to happen, any solution for it? I will be much greatful to heed to my problem, thanks
@thetiredtechie2704
6 жыл бұрын
That does sound like graphic issue. Did you try reflowing the GPU? Other option is resetting the BIOS but I don't thing it's an issue here.
@electronicsrepairschool
6 жыл бұрын
check the ram voltage and post here
@christipan2100
6 жыл бұрын
how i can find the 3,3v power rail and how i can use the external power supply to help me find sort on this? Thank you very much!
@seckinseckin3919
3 жыл бұрын
omg this gopro killed me also :))
@saintaaron546
4 жыл бұрын
Thank you very much for your videos I have learn a lot. I have seen you short mosfet with a wire but i ve tried same but instead 19 volts gets crazy on the board especially on HPs please explain this phenomenon
@benjrikkus1745
4 жыл бұрын
Electronics repair school May I suggest to simulate a new laptop? not brandnew. bec. that one is obsolete. I learned a lot from your videos sir. thank you
@ihabmu2383
6 жыл бұрын
Thanks man .. i love yr videos
@sanelb1147
Жыл бұрын
Hahaha i hate that too, when they start asking for discount and saying how close friends we are. Usually i keep the story short and never accept them again
@ANACONDA_2000
6 жыл бұрын
can u try put some protection to GoPro so it cant be freezed so often from those sparks?
@DevTr3nd
6 жыл бұрын
Very good simulation of systoms, I wonder if you replaced the bios chip with a bad one the bahaver would be different?
@bonbonpony
6 жыл бұрын
Speaking of which: How about simulating this one? A BIOS corrupted during firmware upgrade. The ROM should be fine, just with a corrupt program. Can we recover from this situation without replacing the chip?
@HenrikHvalpen
5 жыл бұрын
Yes you can. You just need to buy a programmer like this. m.banggood.com/da/CH341A-24-25-Series-EEPROM-Flash-BIOS-USB-Programmer-SOIC8-SOP8-Clip-Adapter-Module-p-1353168.html?gmcCountry=DK¤cy=DKK&cur_warehouse=CN&createTmp=1&ID=2363146&ad_id=328979500272&gclid=Cj0KCQjw4qvlBRDiARIsAHme6ou5434Jg-wWFSnMqpzRa1RVpGavNCY6zWKTb7iHoljSH4Sa9tgI_TAaAm9EEALw_wcB
@saintaaron546
4 жыл бұрын
Also please do a video on battery power rail i ve come across chrome books that only start when battery is charged
@oddity4650
3 жыл бұрын
Why should u take out the charger and battery, when replacing screen? Is it to avoid turning it on and short circuit the motherboard?
@sandislancmanis1178
6 жыл бұрын
31:40 shorted 3,3v bios chip so to diagnose short you would find 3,3v power rail and put 3,3 from the power supply. in this example would bios chip get hot? and how you would identify bios chip is faulty and its needs to be replaced?
@electronicsrepairschool
6 жыл бұрын
never found a faulty bios chip :)
@bonbonpony
6 жыл бұрын
A logic probe or some good oscilloscope would probably show that, if you know what signals should be there, and if you can afford such tools (I can't). The BIOS chip is pretty much just an EEPROM with serial interface, like SPI or something alike, so it should send some zeros and ones through the data lines to the "power up chip" (which is actually a general-purpose I/O port, with a serial-to-parallel interface) when it's working properly. But I don't know how to check it with primitive tools. As for shorting the BIOS in the video, it was shorted _around_ the BIOS, so it's like it was never connected in the first place, because the current would be through the jumper wire instead of through the ROM chip. So if anything would get hot, it's the jumper wire. Unless you were talking about the actual situation in which the BIOS chip got shorted somewhere inside? That would be quite rare, because the BIOS is not really driving much current in a normal situation, so it cannot get too hot etc. And if it were damaged by some static, it would rather be insulating than shorting. More likely, the power rails can get short, through some capacitor or resistor or some other part that's under constant load during the normal operation.
@paulrockwell2644
Жыл бұрын
i feel your pain sir
@cagmito76
5 жыл бұрын
can someone answer this , i touch my DMM probe to 19v charger pin on motherboard and it sparks , just one no connection to ground . I dont understand this .
@abdulshakoor3928
6 жыл бұрын
Nice video love it like to learn micro soldering
@m3chanist
6 жыл бұрын
a cap across the gopros power supply cable perhaps, seems to be emi spike.
@MrTrevorparsons
3 жыл бұрын
I have hp pavilion notebook-AB254SA i5 laptop that turns off after 33 seconds. Checked heatsink compound and fan no problems. Removed everything from motherboard except memory and screen. Turn on with power supply and go to f2 to bios screen powers off in 33 seconds. Not sure where to look.
@paulrockwell2644
Жыл бұрын
everone give him props he grate man tk teech like he doe,s i realy need shake his hand never no i may just walk in your shop one day ya?
@jurireville3158
6 жыл бұрын
nice playing master ive learn more to you here thank you :)
@9426442232
3 жыл бұрын
Hello sir, I'm Ajay from india.. can you make video on which are the point where we can supply dc power to find short. I'm enjoying your all videos.. thank you for information
@tomaszpluta5839
4 жыл бұрын
Very useful video! Thanks! I have a Samsung np300e5a laptop and one day it just died when on. It has voltage on the BIOS chip, the green charging light is on, the blue starting light goes on when I switch on the laptop it stays on for some time and the laptop turns off. The processor ventilator doesn't go on, neither does the display. Any idea what the issue is? I'm thinking there might be a problem with the BIOS chip that probably needs re-installing. Thanks in advance! Cheers!
@oddity4650
3 жыл бұрын
Idk if u have done this yet, but could u do a video fixing that dead charger etc thanks
@MrLeftsaidfred
5 жыл бұрын
Ah.. you really love Friday’s!!
@shannonsharp4145
5 жыл бұрын
I'm sorry. I asked about a Chromebook, but didn't mention the make is Samsung. I lost the charger. Can I use another type of charger? I only paid $260 for it. As I mentioned before, the hinge broke on left side after being to tight. Then the screen went blank. It's been 5 months since then. How will it effect the battery or other stuff? Thank you for sharing your knowledge.
@davidhiebsch9802
5 жыл бұрын
thank you!
@iam.masoudsamimi
6 жыл бұрын
How about dual N & P burn up and fix? I have a Samsung monitor which keeps burning the dual mofets on the inverter circuit and once the thermal fuse was burnt. Any idea to permanently fix the issue?
@zub14
6 жыл бұрын
In which video do you show how to repair a shorted 3.3 or 5 or 19 V power rail ? thx in advance.
@fixpc9114
5 жыл бұрын
This is a very interesting and helpful video. What if the laptop overheats and shuts down after a minute or so? Can we simulate that?
@RkTechTelugu
6 жыл бұрын
Thank you mama. ur playing with mother board. Every day im learning new tricks nd new lessons
@computersrepaircotesaint-l7407
6 жыл бұрын
Hi Sorin. If you have any good trick to show us how to find an overloading component not shorted. which mean no short, all voltage are present but the 19.5 drop to 18.5. the laptop dead. I had sony vio shorted capacitor found on the 19v and removed. the laptop worked 1 hour and died. is any trick nothing get hot. thanks
@thetiredtechie2704
6 жыл бұрын
Now when it's dead, do you still have ~19V power rail? If yes, follow it to power management chip checking voltage along the way and then from the chip to other supplies. Is 3.3 V (check on BIOS chip) and 5 V (check on USB) present? If some of them is gone look into that power supply. If something is overloading and not on short, it should get warm/hot too for disipating more power.
@computersrepaircotesaint-l7407
6 жыл бұрын
Thank you for your answer I'll do it tomorrow
@computersrepaircotesaint-l7407
6 жыл бұрын
I tried all mention but couldnt solve the problem very hard without schematic No short on the 5 volt checked the usb couldnt find the main PS 3.3 on the bios chip and on the start button 19v volt I have Sony laptop are very hard If someone has schematic for E89382 let me know Thx
@thetiredtechie2704
6 жыл бұрын
Can you see if you have 3.3V on main power supply chip?
@computersrepaircotesaint-l7407
6 жыл бұрын
Thank you for trying to help me. Yes there is. This laptop is working differently the 3.3V is always present even if the 19V is not. When the 19V was shorted I still had 3.3V. I could not find which one is the main 5V I will try again to check if there is 3.3 on the startup chip. there is clicking noise and the voltage is dropping after the second mosfet about 1 volt. Thank you again
@jetraid
6 жыл бұрын
Maybe you can do a video repairing a gopro :)
@bonbonpony
6 жыл бұрын
Hahah good one :D
@almazz2752
6 жыл бұрын
Hahahahahah
@oddity4650
3 жыл бұрын
Yes and that broken charger
@rduwe9466
3 жыл бұрын
symptoms powers on for 7 seconds and powers of, nothing on screen, cpu gets hot fan is not spinning 19 volts present , any ideas please?
@weerobot
5 жыл бұрын
Go Pro needs Shielding..
@gabrieln5357
10 ай бұрын
Just a question... Saw that Samsung laptop took almost 700mA with nothing connected and I have a laptop i5 gen 6 mfd2016 that in the same situation, with nothing attached is taking 1.9A... is it normal?
@nerijusb4267
6 жыл бұрын
No 3.3V on asus tp300l. Have one with faulty power button. So 3.3V comes just when I press power button and I'm was screwed. :D
@paulrockwell2644
Жыл бұрын
dam he is a master in pc,s and electronics i wish i had his brain
@mariodistefano2973
5 жыл бұрын
Hi, can you simulate a CPU malfunction or Graphic chipset malfunction or even the PCI bridge malfunctions...I mean a CHIP level malfunction, i.e. locking down the clock just like you did for the power supplies or locking one bit of their bus... I'm trying to open a laptop service here in south italy, & don't even know if these kind of problems could arose anytime... please let me know. Thanks. Mario
@MuhammadHavez
6 жыл бұрын
tq mr...
@sammyhenry4860
6 жыл бұрын
Please sir, what is the name of that yellow celotape you using to cover because of heat gun not to get some part damage?
@yuanho2883
6 жыл бұрын
kapton tape ?
@MayurPanghaal
6 жыл бұрын
If I short the wrong pins on the power strip connector to start the motherboard, will it create problems or blow fuses or IO chip ?
@laptopDoctorKZN
3 жыл бұрын
HI i have a Dell e6500 la-4052p ... Please can you explain how i have my vcc vore coils Shorted to ground but the board is working .. im so confused. hope you read my message Lots Of Love from RSA! :)
@pedrof.7821
6 жыл бұрын
Great video once again. Quick question that got me curious: by testing for shorts by adding current to the circuit (to understand which component is getting hot), does voltage matters? Because if i had 19V with 5Amps, when i probe the motherboard i also spark it, and destroy my probes. Since voltage goes down to almost 0V and current is driven all on it, i believe the current does the magic and voltage is no matter. What do you think about it? Thanks
@electronicsrepairschool
6 жыл бұрын
Exactly
@appiahishmael5340
5 жыл бұрын
VERY NICE
@annyan904
6 жыл бұрын
awesome video
@farzin9421
4 жыл бұрын
Sir, My laptop power port was broken. So I soldered the port. It was running well. But unfortunately for the second time it was broken. I soldered again, may be shorted. :(. Right when I plugged the charger in I noticed a quick and small smoke and a spark on my mother board. I cant find out the faults, I would be very happy if you can help me out.
@detlefhafner8660
4 жыл бұрын
Hallo habe ein Problem mit meinem Laptop medion md 6400 komme nicht mehr ins BIOS Passwort vergessen gibt es da eine Möglichkeit das wieder zu löschen
@paolodimasi9332
6 жыл бұрын
You are number one
@kennoha4194
4 жыл бұрын
Sir i have a question ,my laptop was shorted all his capasitor from procesor and allso procesor even its mospets, all parts of board are shorted to the ground of board ,sir what is the problem of my laptop, where can i found the short one that cause all the shorted
@kennoha4194
4 жыл бұрын
Sir please answer my question new subscriber here sir thank you sir, how can i fix my laptop that is shorted all of his part, capasitor procesor, mospets even the usb connection
@paulrockwell2644
Жыл бұрын
you no you go to by like a hp 17g119dx lcd and it is 100.00 by hole pc with lcd for 100.00 go fiure right? that is if you can finde right pc with lcd
@parwej6736
5 жыл бұрын
I m not getting 3.3v in my bios chip asus x555la laptop ,. What to look for plz suggest .. 3.3 v is available on power switch
@pullutshop8572
4 жыл бұрын
yess tomorrow is friday.
@nerijusb4267
6 жыл бұрын
Hello. How to check start up chip if is dead.
@thierrybeginl
6 жыл бұрын
So what happens if I do not have a 3.3V anywhere (bios, starter chip, power button, so many coils has no power but only one with a voltage moving from 4.2V to 4.8V). would now be the moment to check for a warm component with 19v on jack connector? or 3.3V from ahm... coils? coils' mosfets? anywhere lol? hehe sorry for my lack of knowledge! Have a good day!
@U9995Huh-gz7ck
8 ай бұрын
Sorry
@thetiredtechie2704
6 жыл бұрын
Sorry for spamming today :) How about that you simulate shorted power management chip (smc)? What would happen is you have data+ and data- on usb port shorted or switched?
@pedrof.7821
6 жыл бұрын
If USB data pins are shorted there is no problem on the motherboard, you'll only not be able to use your USB. There would be no problem because on repairs you shorted the data pins on tablets or phones if you just want the USB just for charging and you don't care about connecting it.
@bonbonpony
6 жыл бұрын
How about damaging the board with an USB killer? :>
@UsmanKhan-uq2hy
6 жыл бұрын
That was amazing video
@arudha3733
6 жыл бұрын
Hi, which microscope you use,if you don't mind, can you give the details please, thanks in advance... Nice video and thanks for it..
@michaelmccloy6309
6 жыл бұрын
I have watched at least 20 hours of your videos Sorin but I think this was the best I have seen so far, I hope that you will use this format at least once a week, since it was much easier for me to follow. Also and the same time and since this is a planned event instead of your usual work load you could get a basic schismatic of the areas you will cover. I hope you will not be offended and I offer only as constructive criticism, your hand drawn sketches are very difficult to see especially drawn on paper with a ball point pen. Another problem for me, sometimes there must be an open door the the foot traffic outside of the store giving a lot of background noise. I almost want to run out and buy an old Samsung like the one you use here, as then I could even learn a hell of a lot more referring to your video.Thanks again for all of the effort you take to share your knowledge and experience with us.
@paulrockwell2644
Жыл бұрын
right multimeter check 1 allways right
@eronjez5090
2 жыл бұрын
Simulate laptop turn on then off. How to fix it
@NANO-SERWIS.MAREK-DASZKE
6 жыл бұрын
Hi Soren . Intel south bridge Ich8m Ich9m operating at 1,5 v
@CHIBA280CRV
6 жыл бұрын
Fantastic video lesson sir , your videos are very informative and I don't just watch 7 minutes of it Lol. I watch your videos from beginning to end . I have an apple laptop MacBook Pro and of course I have the screen of death the white screen and it goes to the shutdown and start again screen message. It will not load the start up screen. I search videos on KZitem but they all say reload the Os and it will fix it. I did it it worked . The next time I start it up it has the same white screen with the same message shut down and start again. Could that be a short that affects the chip that control the motherboard or in other words a short that keeps a chip on the. motherboard from loading properly ? It was taken to the Apple Store and they said it was a bad motherboard and the laptop is over 5 years old so they don't work on them ! I'm trying to find a video on what causes it to do that cause they only have the reboot answers to this problem.. please help , it's an older laptop say 2007 but I would like to repair it.. thanks for any help you can provide besides junk it..thanks
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