Saving a HP ProBook from the Bin, No power, no charge

[@TallyTechandTroubleshooting]

Graham, This was a fantastic, detailed walkthrough, my brother! Hitting on key points and "extinguishing" the how come and why's". VERY well put together and thank you for taking the time to do this. Take care...

[@jorgeruiz7541]

Graham what a LOVELY video you made today. Highly precise and detailed explanation. Step by step elimination of every single question that someone can have starting this kind of repairs. The pace you had on every single explanation was proper of an eloquent master at his job. Like a well seasoned teacher in a class. It was so good that even a person without english as a native language can understand. Thank you for this video. As a long time viewer I really enjoy these highly detailed ones. Greetings from Chiapas, México.

[@DIYDaveOK]

This is one of your very best videos, Graham. Exceptionally methodical and well explained. Thanks!

[@harriscom9255]

Great video Graham, definitely one of the best. I'm 59 years old and feel like I've just come out of my favourite lab class in school.

[@ronaldwitteman2134]

If you put the component in a little container and then messure it ,The chances of flipping it to the 90th dimension is higly reduced.

[@markvvelsen]

Great explanation and repair Graham! Trying to do some boardrepair over here and you give me a lot of great info to try and learnt a lot over the last couple of years from your video's and have already repaired several laptops and desktops with your great info. Thank you for that!

[@chrisverhulst5476]

That man really deserves a lot more likes. Graham is a 100% honest person. You can tell this by everything he posts

[@Urawizardary]

The fan vents blowing dust and hot air thru the delicate lcd cables and back light components was a great apple design too!

[@johnm7723]

Thank you very much for taking the time to explain the process It was very useful.

[@carlojoselitochua2954]

Done watching, thank you very much for the informative repair video. I have learned significantly more troubleshooting & repair lessons in this tutorial video and to your other repair videos as well compared to my ENTIRE 4 YEARS OF COLLEGE due to the rotten & outdated standards of education here in the Philippines. I hope you will soon have a mini-series for Schematic & Boardview-free Voltage/Power Rail Tracing[12V/18-20V Main Voltage Rail, 5V, 3.3V, CPU/GPU Core Voltage Rail, DRAM Voltage Rail, IGPU Voltage Rail, System Agent/Northbridge Voltage Rail, PCH Voltage Rail, BIOS Voltage Rail, Battery Power Rail], Proper method of testing/checking of potentially faulty MOSFETs & ICs/Controller Chips, CPU/GPU/PCH Reballing and BIOS Bin File Editing.

[@andyboghi]

what a great lesson for tracing, seeking laptop motherboard, i also have a p2 pro with macrolens, didn't have opportunity to repair a laptop, p2 pro helped me on small repairs like tv tuner and smartphones, thank you again, if there are smartphone repairs with thermal seeking don't hesitate to show us too✌️

[@TheDefpom]

@1:30 that wifi connector body will be at 0V... so that could be shorting out stuff whilst it is sitting there... probably best to get it out of the way, or plug it in.

[@firzen0000]

You're literally the best teacher ever

[@SusanAmberBruce]

Great video, little things like the meter charging capacitors and affecting resistance reading are so worth hearing.

[@SC-fk6bb]

One of the best video you have ever made!!! I was able to follow all the steps, and sometimes I predicted the next one. That means only one thing for me: you are an AMAZING teacher

[@TheMieleVG]

14:30 right cap damaged

[@nelsonmendes5008]

it´s not, it was him with multimeter pointer...

[@TheMieleVG]

@@nelsonmendes5008 I recon later in video, but at first sight looks damaged

[@ssabykoops]

12:15 Graham scratches it

[@Nico_335i_DCT]

Very nice go-through, Graham.Thanks for sharing. Regards Nico.

[@gravedigga71]

super entertaining and educational. Thanks Graham.

[@keithsweat7513]

This board is a IMB8X95-871B-7RAJ “of course…. An absolute classic” so funny!! This was a great video Graham

[@coladict]

Graham: stab, stab, stab! Me: Engineer is spy!

[@tobiasabt8398]

Very nice, detailed and instructional.

[@Roamor1]

Thank you, very clear explanations.

[@KrissBartlett]

Thank you Graham i can try doing that now i have a heat decting camera and power meter to

[@amannetsohmor6943]

Thanks for this detailed repair video. By the way, I am getting used more and more in using the power supply during diagnosis it seems easier faster and more helpfull. What do you say about that?

[@fredscratchet1355]

Very informative. Thank you.

[@shanesstuff1321]

what a great video, i loved it thankyou so much for explaining everything thanks again from Brisbane Queensland Australia

[@stephenkern6523]

BRO!!!! damn fine video my friend. you explain things very very well. keep it up mate.

[@favioquiros]

No question, this is a really good video, thank you very much

[@g4z-kb7ct]

Graham... there is a MUCH easier way to measure a loose smd cap. Just solder one end to the board somewhere (the same place where it was is fine) leaving the other end not connected. A simple 'rotate cap 90 degrees' is one way if there is space. Now it won't move and measuring it is easy. Do this on every repair for the rest of your life and see it works perfectly and saves your bacon every time you do it. You can thank me later ;-)

[@IfItAintBrokeStillFixIt]

Thanks for the video, very informative, what's the advise to get in laptop repair, have a strong interest most my life in electronics.

[@in2dodo744]

Thank you very much! Very interesting

[@williamrollinger3637]

Great video, Graham.

[@Fourty_7]

So much important informations in only one video ,Thanks

[@Arachnoid_of_the_underverse]

Great video thanks for the full talk through on the diagnostics it really helps.14:33 looks like a cracked capacitor or is it just a mark on it?

[@Adamant_IT]

That was the one I was measuring- I scratched it with the probe 👍

[@dontquestionjustbelieve5757]

Hey! ive got a question about a semi old ThinkPad laptop ive been trying to fix. Is it normal to have 2K Ohms across the 1V line and ground? particularly when measured from the pins of the mini PCI WIFI card port (without the card in) Thanks :)

[@fliporflop7119]

I always like your video before watching because i know i will get something super methodical and professional to view. Thanks.

[@KamilTestov-c5n]

I have replaced cmos battery in my hp elitebook causing it not to power on afterwards. Had to remove the cmos battery and notebook started as usual. Weirdest thing I have ever seen. CMOs battery is brand new and I tested it on AirTag, works fine there.

[@Aneesh.Asokan]

Did you measure the voltage? Testing on air tag is not a sure way for conclusions!😀

[@ronniewhite697]

Staring at the board works great when you younger the older you get it does not work that well anymore

[@oldschooldude8370]

Excellence as usual, sir.

[@MrHawasho]

Use hot tweezers for the capacitor removal it’s. A good tool

[@asv5769]

Great Video Graham. What kind of soldering station you used at 31:20?

[@Adamant_IT]

I use an Aixun T3b

[@waleed9128]

could you please give me the link where you bought your multimeter probes from? thanks.

[@Adamant_IT]

www.aliexpress.com/item/1005001557245171.html?spm=a2g0o.order_list.0.0.6cca1802Tr63C4

[@wthornton7346]

Came for the 420. Stayed for the electronics ;-)

[@noakeswalker]

I have often thought you could do with a milliohm meter at times - with proper 4-wire Kelvin clips an'all that, for locating shorts on a board, especially as it's very often due to one of many caps that are in parallel - but your tentative application of power down the rail and an IR camera seems to work fine :o) These vids are always interesting - I've been in electronics since about, er, mid 1960s, work and play, and I am still learning stuff from your vids - I am a laptop dunce really, though I got two 'dead' Macbook Pros working that I was given, thanks in part to watching how you diagnose these ! Ta Graham. (FYI - Macbook Pro deaths were a keyboard left hand shift key internal short causing all sorts of mayhem, and an apparently corrupted OS on a hard drive, oh, and a dead/swollen battery in each of them of course !)

[@nelsonmendes5008]

It looks like fan connector is not connected right...maybe you want to double check it! Besides that thank you for your explanations, i really liked it!

[@bulwinkle]

A nice bit of electron wrangling.Thanks.

[@gamlesleyyillom4244]

You’re such a golden medal repair guy. 😊

[@joebeeston1995]

Nice work. What thermal camera are you using? I have the Topdon TC001 / TC002 devices and wondering if they would be accurate enough for this type of work.

[@gadgetmind]

You don't need accuracy for this kind of work and I use my Topdon TC002 all the time for finding bad caps and checking hair straighteners etc, are at the right temperature. For building thermal surveys, and for calibrating heating devices, maybe you need something better with a calibration certificate.

[@joebeeston1995]

@@gadgetmind Nice one thanks. It was just because he had the macro lens on standby that prompted the question. Thanks for taking the time to respond 🙂

[@gadgetmind]

@@joebeeston1995 Ah, sorry, I thought you meant thermal accuracy. For positional accuracy, their resolution is good and moving a finger and then something like a cable tie into the field lets you find the culprit. If there are lots of caps close to each other, then fall back to the old school isopropyl alcohol and you'll see the bit that dries (and even bubbles) very quickly.

[@Adamant_IT]

I use an Infiray P2 Pro 👌

[@ugochukwunwamara4421]

How can I get that thermal camera you used in this video ?!

[@foxsquirrelgaming2463]

You really need a mini soldering pen

[@baghdadiabdellatif1581]

Great work 👌👍👏

[@ronniewhite697]

good job well done

[@_HazePlays_]

0:37 blur comes in too late can see what you trying to hide :))

[@oefzdegoeggl]

I'm not a fan of "taking another capacitor off to check for (possibly) same value". Whenever you put your iron on the board, you cause thermal stress. For what? Finding the cap value? Forget it. As long as this is not part of an RC for ... "programming" something (like you have it on some PWM controllers), put in anything that matches the physical size. Or go all-in and do it Sorin style though keep in mind that he knows when you can leave it off and when not 😄

[@Nele_BiH]

Less is more meanwhile Sorin injects,goes nuclear and says there you go it is fixed we found a capacitor🤣.

[@JustInspiredKent]

We have picture!

[@Nele_BiH]

@@JustInspiredKent Exactly🤣

[@bunnylove273]

Hey bud great video ❤

[@57door]

We like your videos :)

[@peterjackson8406]

Nice job finding that fault, many a good device has been disposed of because of a 20 cent part.

[@coladict]

Hey, I also got my hair cut since your last video! Did it on sunday, so you've probably recorded this before then.

[@VictorTope]

You are doing well

[@mancavehobbies6213]

Graham is "THE GOAT" for fixing computers

[@rickoneill4343]

Something tells me that title hashtag might invite some new viewers 😂

[@Michael-B41]

just come in with low current use a thermal cam or you could use alcohol under microscope see which one burns it off quickly

[@Michael-B41]

oh you know that lol first time watching you

[@Michael-B41]

no capacitor no shorted capacitor lol there is times on my own stuff i didnt replace it. i still have an hp with 3 removed still works great 4 years later

[@simonlauer9379]

I am a software engineer, but I so want to get my first iron

[@WTFShelley]

@0:44 your showing some womans name and number on the back of the case.

[@wayneg296]

👍👍😎✌️🤟🇬🇧🇬🇧🇬🇧🇬🇧🇬🇧👏👏👏

[@jonathanyang6230]

drug number funny

[@HisMadness_]

Wafflelicious !

[@weaselbox6746]

[@PAB-Elektronik]

Learn to clean your tip m8 its always so dirty

[@Adamant_IT]

This is actually mostly lighting. The 'blade' of my tip is shiny silver, and I do clean it, but angle of the microscope seems to never ever catch the light on the tip, so it looks dull. That being said, I was also using my old iron in this video, and the tip on that one _is_ pretty shagged.

[@PAB-Elektronik]

@@Adamant_IT Ohh im sorry m8 it looks dirty my bad :-)