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.

This man is a big fan of the weekends for sure.

Shorting the 5v was amazing.! ❤

Hello SORIN You're the best Electronics teacher on KZread. Thank you very much GOD bless you

I have already repaired 2 laptops from your lessons. Thanks so much

Quite possibly the most educational video you've done. Thank you so much for showing us this.

You are the man, my beloved friend. Pursue your passion on teaching others.

I learned so much from this video, and it appears you did too Sorin. That is the beauty of a good teacher, not only do your students learn, but so do you. I'd like to see you do this same lesson on a PC motherboard, as that's my thing. Great video, one for the bookmarks.

I think this is the best repair video i have seen.

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.

All in one diagnostics video. Thank you alot !!

An observation, when the 5volts is short the 3.3v became in 3.1v thanks for the simulation, great work!!

Learning such a lot you are a brilliant teacher.

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

Very informative, great video. My favorite youtube channel. Thank you!

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.....

Thank you for the good quality videos ! Mult succes in continuare :)

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

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 ]

This one was very important video !!! keep up the good job

I love your video friend. You are the Best teacher ever. I don't know if i am alone to feel that you love your job and teaching others. You are born to do that. You know so many things about Electronics. Congratulation friend, you are so Nice. Thank you for all your work

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!!!!

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.

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.

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 :)

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

Lovely demonstration 👍🔥

Very interesting, i have lot more ideas today on laptop board, Thanks boss.

thenks for the lessons professor.

That was especially interesting, thank you.

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!

Great Video. Thank you, i have learnt a lot.

It's funny how you're always sitting at the same desk, but you usually have a different mouse in each video.

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

Brilliant teaching video

Thanks man .. i love yr videos

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

Wow...Thank you sir...good job.🤗🤗🤗

hello, i have seen many of your videos.... thanks for educating me.... grateful to you..... god bless you.... rajendra vijapurkar

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

Omg 😱you are just machine. That know every thing about it's action.... Also fabulous mentor. 👌👌

nice playing master ive learn more to you here thank you :)

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

hahahaha "dont worry we have something to broke" i like that siri... lol

i watch your all video sir thanks for your tut

Nice video love it like to learn micro soldering

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...

good teacher

thank you!

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

many thanks, sir.

So nice .. many thanks.. to you..

Ah.. you really love Friday’s!!

Very good video.

omg this gopro killed me also :))

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.

Can you make a vid in which you'll make a teardown of that GoPro? Maybe you can help it :)

Really enjoyed this video, Sorin. Great idea to take a good laptop and use it to simulate issues and then fix them. Did you solve the electrical issue with your GoPro? You have a lot of patience! Guessing since your multimeter and the GoPro are both connected to the computer for vid-capture, when there's a spark, like you said, it freezes. It must be very well-built to withstand so many shocks internally. Anyways, I'll find out in your later videos if you solved it. : )

Soren man your the man iv been trying to fix a toshiba a665 but i don have 3.3 on the io chip

awesome video

That was amazing video

tq mr...

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!

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

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?

btw are you using a compressor on your mic with a level threshold.. i hear the level drop when sound go lower.????

You are number one

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 ?

can u try put some protection to GoPro so it cant be freezed so often from those sparks?

i feel your pain sir

a cap across the gopros power supply cable perhaps, seems to be emi spike.

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!

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

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 .

In which video do you show how to repair a shorted 3.3 or 5 or 19 V power rail ? thx in advance.

Hi, Have a ASUS A3A Laptop motherboard board and the problem is it wont always power up BUT the power switch always lights so i figuring a start up capacitor as it works perfectly when going , just the start up. Also if you reset the computer it will stall when it restarts so i figure the big gulp of power then as well indicate a cap for initial start. ts not the PS as i done all that as i repair electronics just never a laptop board as its all so tiny and almost unrepearable. and tried all usual drain tricks with power button and as laptop runs when going , it not the PS .. So am i looking around the power input for these caps and will they be big or small surface mount types ? Thanks for any help

Hi great video here is one idea how to locate the bios chip on 2019 laptops HP there not beside the starting chip w so were they are located now ?

VERY NICE

Nice sir

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

Im having issues with my samsung npr580 im getting the same short that you showed when inly the led lights came on, but im having issues fixing it. Any suggestions?

is it possible to get a faulty startup chip or bios chip even if the 3.3v are present in the startup chip and bios chip?

Why should u take out the charger and battery, when replacing screen? Is it to avoid turning it on and short circuit the motherboard?

I can belif this man is playing with a working board like this

What do you call that sponge thing that cools down the heated bios?

Thank you mama. ur playing with mother board. Every day im learning new tricks nd new lessons

dam he is a master in pc,s and electronics i wish i had his brain

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?

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?

Maybe you can do a video repairing a gopro :)

@bonbonpony

6 жыл бұрын

Hahah good one :D

@almazz2752

5 жыл бұрын

Hahahahahah

@oddity4650

3 жыл бұрын

Yes and that broken charger

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

very good

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

More then a year old video, but does this voltages (3.3V and 5V) also apply for desktop motherboards? On other words, does this troubleshooting applies for desktop motherboards? Great videos btw. Greetings from yours (ex) neighbor from Serbia.

@d95mback

4 жыл бұрын

It's different on a desktop computer, the power supplies are controlled by the ATX power supply, which turns them on when you short the PS_ON pin on the connector (this is what the power button on a desktop does).

How can you check the +5v power supply is ok, if you cannot turn on the laptop? Is it possible to do without a lab power supply?

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 ?

Also please do a video on battery power rail i ve come across chrome books that only start when battery is charged

I have a laptop I think I shorted out with the display cable that runs into the motherboard I think there's a capacitor or mosfet broke. Something gets insanely hot in the middle of the board but I have to take it apart to find it

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

where do you buy chips from?? i cant find the exact no