Brilliant video! I was successful on my first ever try at attempting something like this. Thanks so much, my granddaughter is happy to have her laptop back in working order!

Your procedure,the way you explain some of your professional approach in addition to the knowledge you gave us My appreciation

Learning a lot from your channel, you're the man my friend ! bravo from France...

Another great video! I learned a bunch from this and now have more techniques to try!

Great video Good footage quality, great knowledge, limited filler (good use of fast forwards) This will give me some new methods to test out some HP's Thank you

You are really the best, your explanations are unique and it makes the work very interesting to understand. Keep it up Adam. From Ghana

Loved this video and your channel. Learning so much. My power supply is arriving next Thursday

Great videos. I'm taking so many notes while watching these. Thank you!!

Merci de partager votre expérience! Même si je ne comprend pas trop l’anglais c’est un plaisirs de regarder. Comme vous aussi j’ai beaucoup d’échec a mon actif mais je ne désespère pas de m’amélioré. Je vous souhaite plein de réussite pour la suite!

Omg this video gave me new ideas for trying to fix my laptop, I already solved one dead short but I think I'm having another one like the one on this video, keep up the great work!!!

Great fix Graham! Thanks for the educational videos!

I am learning so much on your channel. Thank you

I actually learnt a lot from this video. Thanks!

Extremely helpful video. Thank you. My thinkpad died no power light no charging. Using your video as guide, I was able to solve the issue. Basically 19 volt power rail was shorted and mosfet near power jack was overheating. But the actual culprit was a shorted cap far away from the power jack which was detected by checking for overheating. Diagnosis wasn't too bad, the most frustrating part for amateur like me was microscopic cap flicking away from tweezer and lost never to be seen again.

interesting, informative and knowledgeable.. keep it up dude!

This is sooo awesome! First video I watch of yours, I don't know how many you've got, but I'm going to watch them all this weekend 😎. (Can't right now, got to go tell my friend the bad news about her HP Envy 13... 😕)

Thank you sir ❤️ huge love and respect from India. I also work on the same field. Your videos are full of courage, knowledge and motivation. Keep up your hard work ❤️. Greetings 🙏

Hi there , just i wanted to say thankyou for your tutorial video , your explanation was very easy and understanding , please upload more like this video . it absolutely for beginners . your explanation was amazing . keep it up . thnx

Love your work bro

Thanks 😊😁 once again ❤️

Great job! I usually start pulling out caps and see if it doesn't beep anymore but this might be a quicker way to find the short

I like this method, going to give it a shot. I'm not reading much of a short from the charge port, but definitely a lot of smd caps straight to ground on both sides in the same area. Just having a hard time finding correct pads to inject from!

Oh DEFINITELY show more failed repair vids - it encourages people to actually do board repairs since it shows what can go wrong :D

Brilliant video! I'm still miles away from attempting this myself, but each time I watch you work, I pick up one or two little things. I suppose it's simply a culmination of knowledge. I still think you could've been a dentist lol. Thanks for uploading.

next time i am flying over the UK, I will ask the pilot to avoid going over your workshop, just in case there is this teeny-weeny interference :D

Very Good, Keep the Videos coming, thank you

Congrats on another successful repair. I always enjoy watching your videos. I repair radios, and always enjoy a change of pace. You may want to reconsider your philosophy on not replacing bypass capacitors (especially very close to MOSFETS used in switching voltage converters). These circuits create a HUGE amount of high frequency switching noise that is very rich in harmonic content. Although you are fixing the primary problem of the computer not powering, you may very well be creating more obscure issues with freezes, reboots, memory errors, etc. by allowing the very dirty power to continue on the trace to the next circuit. Forget interference with external devices...you should be concerned about interference with the device you have repaired. Since these tiny SMD capacitors are only pennies each, I would suggest having them in stock and replacing them when they fail. Would suck to have your customers saying...."that guy did a great job repairing my computer, but the computer hasn't seemed quite right since he worked on it". If you find time, you may want to watch this video: kzfaq.info/get/bejne/b6uRh8eUl9PWY2g.html Good Job!

excellent video on power injection

This came really really helpful

Gracias Doc .!!!

About injecting power for diag purpose. Ive watched almost all of Sorin's videos at "Electronic Repair School" channel. He goes to "injecting power" as a default method of finding short circuits. That being said, he has received a lot of complaints through his channel of people not being experienced enough using the same method and frying their motherboards. He's talked about this subject many times. It would be nice if someone would do a vid or series of vids on how to power inject without damage. I watch your videos now because it got very distracting with Sorin who get distracted a lot and doesnt edit his videos. He leaves you hanging while he talks on the phone or with co-workers. Great channel, btw.

thankyou for that idea sir, Godbless🙏

Thanks for sharing

bravoo..great videos, go on...

you have a very good and sincere manner of explaining ... i ve been following your channel for quite some time now .. thank you just a side note though ... you mention "voltage injection" as the method you employ to find the short .. by heating of the component thats shorting ... however ... should it not be "current injection" actually ... the voltage is irrelevant ... as it will fall depending on the powersupply and the current drawn by the short ... however it is the current that is being injected ... to find the component that gets warm/hot actually it doesnt matter what we call it 😊 only that every time i hear it i correct it in my mind

thanks, i repaired mine now.

your very good teacher

Thank you.

I dont understand why youtube need couple of years just to directs me to your channel.

Awesome! :D

+1 sub, good job

Nice video

Thanks alot.

I’ve got a pile of dead boards next to me because I’ve been trying to figure this all out - but I’m making progress!

It is interesting, how that tiny SMD messes up things 😁

bdw super informative videos

So a good way to start finding faults is to check the resistance on the power jack and if its less than 40 kΩ then there's something wrong in the board?

Nice video.

We need more and much more..thanks

Brilliant video. What device did you use to inject voltage?

Nicely explained. Thx!

My lenova ThinkPad red power on and no display but the cpu makes some clicking noise when battery in and charger and no noise when battery out

Basic question: as the short was on a secondary rail and all the mosfets were good, I wonder why you can still see lower resistance on the DC jack input. I would have thought that the mosfets would have prevented the short from travelling back ( even though with a weaker short reading than on the fully blown rail).

Just fix an HP laptop with your video thank you!!!!

Hey do you have a video for Legion y530 ich ? I have a similar problem for my laptop. No power and no charge light

i have been trying to see what type of cameras system you use to examine the equipment you repair?

Hello sir please i need your help, i have hp pavilion dv6 no power no charging light and if i put the power cable in the jack then it touches

If you have a dead short on a mobo, The quickest way to find it is let it have as many amps as it wants, Then put some lighter fuel on any Suspect areas. The excess heat from the hot shorted area will quickly evaporate on any hot suspect components.

sir i am also using envy 15 360 but i have a problem of caps lock blinking two times and screen is blank .any resolve for it?

do you have a back up EC Firmware fil bro? thanks anyway

Sounds like you could really use a thermal imaging camera to find any faults on a board like this. Inject power, point the camera at it and you can find the faulty component straight away.

Where you started all of this ? I want to learn too

I can understand dual phase voltage supply on AC, but how does it work in DC? 5v is 5v is 5v. I don't see how a steady, smooth DC would benefit from layering another steady smooth DC over the top of it.

At the 5:50 you are checking the ground. I have an ultrasound device and it's not detecting the probe. When I check the ground it's not connected. Is it SC in somewhere or what? Any idea?

I found an hp pavilion x360 with 180 ohms on the input jack and it cuts out the charger, could it be the CPU? I measured 4 coils near the cpu, 2 of which had 0.6 ohms and one has 4 ohms and one has 10

Hi bro I have issue with my hp pro book 6550 b laptop The charging LED was blinking 8 time When I press power button Mother board is not turn on Hp probook 6550b laptop I did RAM cleaning Additionally components disconnection Charger was good And mother board voltage is 19.45v Help me

Hi, we have an old HPEnvy x360 13 ay000na. It won't turn on and no charge light. Considering copying your methods as the computer hasn't been used for a few years, so feel we have nothing to lose but not your its for amateurs like us. Any opinions please.

Why not use a thermal camera to see the hot component when injecting voltage?

Great video. My HP Envy 17-ae101 laptop has just died on me and I think it's a short circuit on the motherboard, and it looks like it will have to be replaced. It's a £1500 machine and I've had trouble with it from day one. One thing is certain though - I'll definitely never buy anything from HP again!

Yes i still get confused when he goes on different bits of the board, i mean i think i got from this video is supposedly one of the elements was collecting the heat or elc and not moving it on to the next bit. Then he fixed a element then the moving of heat or elc became the correct circuit again so the battery and charger worked again.

Thank you sir❤

Thanks for this. its really good. I have a Sony vgn-aw11m that's heats a lot near the Hard DISK. On the other side of the board there is an intel chip. Wondering the Problem and a Sony vgn-aw11z that powers on with no display. Diagnose for me please. Thanx for you work

there is a stupid question always in my mind > where to solder the (+) for voltage bruit-forcing ?

Bro you really like to play video games with these computers intestines hahah

I think my envy 360 is having the same issue as thing. It gets no power no charging nothing at all. How much dose this repair cost?. I live in Portland Oregon area.

One question though, is there a good reason why you use a hot air gun to remove the dead caps as opposed to a soldering iron? I'd like to take my first attempt, but I don't have a hot air gun or I should say the only hot air gun I have is rather huge, it's for removing paint...

I please can I use capacitance PF15 for PF16?

Hi morning m laptops repair amateur and wanna buy simple and cheap soldering equipment any advices pls

Can you remember whether there looked to be room for another 2.5" drive in there? When I bought mine they all came with an SSD for the OS but there was an option for an additional 1TB 2.5" HDD which I didn't bother with at the time. I've got a spare one now and was thinking about opening mine up to see what I might need to add it in, but from your video I can't see where HP would have put it in!?

HD1 flex cable connector burnt, please please need the 12 pin pinout, I have identified on the board from left to right [1234567sata,{8?,9?},10,11,12 5v]. Pins 8,9 unknown? Please help thank you

How do you know that how much minimum resistance shold be in Inductor and also in between battry +ve connector and ground??

Hp boards have little balls of solder that work as power supply separators so u just get them off the board and all zones of the board get isolated, the finding the shorted zone is way more easy

It's easier to remove small smd capacitors like this with soldering iron with a blob of solder on the tip . Just hold 2 seconds and it will come of . :)

Hi am David from Ghana and my hp 15dw3033dx motherboard is dead. Can you do a video on that?

I pledge to ur teachings

Great work but maybe you should change the two capacitors the bad and the good one too by the same size and color

how much would you charge for a repair like this?

whaT alcohol do you use?

your very intell man like how you think and your option turn out at the end is very diffed and intell like how you do things far beyond my intell

32:18 How do you know which side of the capacitor should be shorted to ground?

what about intel chipset or intel pch ( Platform Controller Hub ), are they also shorted when off?

I have a problem. screen's lock. I forgot my mobile code Can you unlock iPhone X Max?

Graham, what is the reason you did not inject at the power supply using your salvaged power cord? As the power supply sees the short, it would be a lot faster than soldering in wiring at a specific point.

Hi, i got a envy x360 with similar problems. i have bought it with a cracked screen but the laptop itself was running great on an external screen. meaning to fix it i had to wait for the new lcd to come by mail. When it arrived i screwed it in , started the laptop and no power. Ledlight next to the chargeport would go orange. . after holding powerbutton for 30 seconds with battery removed and charger not connected the powerbutton led would light up, but still not starting up . also starting the bios recovery mode WINKEY + B does not make it start. so i ordered a new bios chip and soldered it in. Still no luck. Now i am at a point where i should give up, but i know there is something small with this laptop, because before it worked great. It stopped working after resting 2 weeks. What would the first thing be to concider if it was your laptop?

When you measure the resistance en the cord which values correspond to each failure? You say 100kohm would be normal. And 40 is a short but not on the main rail. So a short in the main rail how much would it be?

You are applying 1-3amps on Main Vin of this laptop but how much Voltages ?

Nice video. I have similar problem HP Envy, no power & no charge light. But when I measure resistance at the charger its open. I have checked the dc jack to see the voltage is coming to the motherboard. Appreciate any troubleshooting tips.

Good job, really smooth. Is there ANY other way to work without LAB Power Supply? I don't have it and don't think i can afford one.

Can you make a viseo for no display problems please sir

Man you always get the lucky one's LOL every single short i got is a dead cpu drives me nutz (or im nutz but i inject and the cpu gets warm nothing else) Do you get many of those on HP? i got a rework BGA station i remove CPU and short gone lol damn cpus cost more than a used board so stupid for me!!! I try to buy some of the AS IS boards but some them dead cpus to LOL