Graham, Thx for your excellent instructional videos. I admire your ability to communicate the troubleshooting process so well in addition to your superior technical knowledge.

Beautiful bit of soldering on those caps - nice to see them all line up on their own.

Good job. I wish I understood more about micro-electronics. My Dad taught me about electricity when transistors were the size of my little fingernail. They had heat sensing characteristics back then and I won a science fair with the device that he helped me build. Thanks Dad. I love you.

Great repair today, loved the extra information and explanations. Keep up the good work.

Well done Graham! I love and admire the way you teach. I watch other board repair techies, but non are as calm and meticulous as you are. And most importantly, explaining in detail what is happening and what you are doing. Your focus in your videos is to teach more than just to make money! And I respect that!

Love that you take on such old devices still. Somehow those are always the most satisfying to me. Something about making something so old work again and extending it's life.

Absolutely love your videos, it works as a tutorial for me and nice story to watch which relax. Keep it going Adam well done you.

Wow! What a great job troubleshooting and explaining.👏

Thanks for taking the time to explain your trouble shooting. Caps soldering better than factory!

i don't know what you're talking about half the time but love to watch you repair and explain as you go along.

Awsome job bud,well done,i loved the fault finding ,superb

Thanks for uploading this video. Good methodology used for diagnosing the fault. I am definitely considering on getting my hands on a thermal camera....looking forward to more videos.

Watching you reassemble without testing introduced tension… those power cycles heightened that tension… but when the screen lit up, the release was sublime, well played 👍

Thoroughly enjoy it and thank you. Great knowledge inputs guy and well presented.

Well done and very informative. Thank you for sharing.

Great lecture to learn from. Thanks!

Love the way those Caps flowed into place - Very satisfying!!

thanks for the "nostalgic" trip on this "Let's fix..." 👏 good to see another "oldschool style" DELL fix...thanks Sir! Very good job!

8:58 - as we all know, "via" is indeed the Latin for "through". Interesting that in this setting Graham like all computer buffs uses the *correct* pronunciation of the Latin "i", but in normal speech we say the "i" as in "higher".

Damn, now that's what I called a soothing commentary, great work sir. 👌

BIOS battery woes! Dealt with a older Acer 4420, every indication pointed to a shorted cap somewhere. Spent a few minutes and no short present. ???. Remember one of your discussions about the bios battery. Why not said I. Checked the battery, needless to say the laptop has to be just short of being tore apart to gain access. Brilliant engineering! New battery and the old lady came to life instantly. Moral of the story, if I need to open up any computer either laptop or desk model, just replace the battery. Thanks for a great video.

Nice video!! Great work with the hot air! That dream never happened to me yet :)

I only started doing board repair and this is very helpful

this is great. you've done an amazing job explaining. much apricated...

It's so nice you caught them jumping into place on camera. GREAT REPAIR..

I love the way you show us on a multimeter It is really helpful for beginners ❤❤

Very Nice. Thanks, man!

Great video!! Thanks!!

Brilliant thanks Great work and technique

Nice work! Great teacher!

Very nicely done!

excellent work well done

Nice work as always

Great video. Looking forward to a future void injection video as well as voltage injection 😂 @22.00

Excellent work 👍

great video really enjoyed the testing process although was kinda hoping for a scrambled bios still waiting for you to use the 3d printed programmer case lol.

Thanks for sharing your skills.

I've never soldered a thing in my life - most I've done is renew thermal paste on a CPU and upgrade the heatsink & fan, lol - but find these vids fascinating!

Betting that errant jumping cap is in the beard. Great solder work keep up the stream's.

thank you , nice video 😊

Graham i will have to give you great credit you would be a great Tech teacher.

Thank you very much, you're the best

no worries ... display on the meter is very well visable !

Naughty capacitor department🤣🤣nice one.

As Alex would have put it that capacitor thing flew into the 9TH Dimension!😆 I must say that soldering job was spectacular even Alex would be proud!😁

As can be seen by the proximity of that "secondary power supply" to the battery connector, the voltage, that rail is running at, is the battery voltage. So that "secondary power supply" is also the battery charger. As in (basically) all MacBooks, the whole systems runs on the battery voltage ("PPBUS_G3H"). When there is no battery installed, that rail is simply set to the end-of-charge voltage of the battery.

A thermal camera is invaluable. It reduces very much the time of diagnosis. Nice video!

A good cap will show infinite DC resistance once it is charged, and a small capacitor will charge pretty fast (your DMM charges it).

The secondary power supply does not go to an arbitrary value but (at least with Apple) to the battery charging voltage. That is also the reason that it jumps up a little bit once the SMC is happy about things. In that way the battery is prevented from (over) charging before that time.

Never get tired watching others work :)

i like your way of dealing with short

Thank you prince

Nice, you would be a great teacher , really easy to follow. What camera do you use,its not a microscope but it gives great picture?

It's always the same...in that it's never quite the same. Nice fix.

hi sir. i have been watching your videos. i prefer your style. logical this easy for us to understand the flow of troubleshooting. my question, is this method applicable to mobile phone troubleshooting? thank you. much love from Malaysia

Not only I'd love to watch yours movies becouse of getting some knowlede but also that your accent helps me with learning better English :)

Nice job, Bro

These Dell Latitudes are great to take apart if you are doing anything other than motherboard removal, but yeah as I was fixing my E6430 with also a shorted cap, motherboard removal definitely meant you gotta flip this thing back and forth to remove a bunch of screws...

I have a laptop exactly like this one, simply love the model! Of course it has maxed out RAM and SSD's, but CPU is not that great. Running W11 22H2 btw!

I have the same thermal cam and it's very accurate..try trop down the temperature scale on the cam

Great job. What thermal camera are you using?

Excellent 👍

Another laptop made by Compal. They seem to make laptops for everyone! Great video as usual, thank you.

I had the same problem with my Dell laptop was still under warranty they came to my house installed a new motherboard at no cost to me.

if you just unplug the CMOS battery, then plug PSU in, then it should come on. If the bios settings are scrambled then won't POST. I had this issue on Latitude E7440 (Core-i7)

the kaiweets KM601 is good especially with the display for camera and not expensive

what thermal camera model do you use?

Watched this video about repairing a Dell Latitude E6440 from my Dell Latitude E6440 (Mine has a dedicated Radeon 8690M GPU though).

I have worked on many of these models of Dells. As well as older and newer models. For some reason Dells will do this strange thing of not going to post after repairs, upgrading or replacing parts. I use to get worried. But now I just keep powering on until it works. As a Dell repair technician. I can say that this is very common. But don't know why. All I can suggest is to relax and be patient. None of the other manufacturers seem to have this issue. I am a certified repair tech for HP, Lenovo (IBM), Toshiba, Dell, Sony, ASUS and ACER. In my experience. Only Dells do this. Sometimes it can take several power ups for Dells to seem to work after any repairs or upgrades. I have to get certified on all of these companies newest models every year. Yet Dell is the only one that consistently has this problem. Don't open it up again. Just power on until it works and it usually will work perfectly once it gets past this post issue. While a CMOS battery may need to be replaced. It is not the cause of the problem. I suspect basic firmware programming issues. As it will eventually post even with a dead CMOS battery. With that said. HP is the biggest pain in the technobutt when it comes to branding a new motherboard. Not relevant in this case. But I really hate the branding procedures of an HP motherboard. Dell has the easiest branding procedures. IMHO

What microscope are you using? The caps at 20:00 look so good.

HELP PLEASE!! Thankyou again Graham for sharing your knowledge and wisdom - very much appreciated 🙏. I hesitate to ask anything more of you man so I wonder if someone in the community may be able to help me a little further however. I located two blown caps on my Alienware 17 and identified them as 10uF in 0805 package. The schematic shows the following part number 10U_0805_25V6K so I assume they're 25Volt but I don't have any idea if the 6K at the end is important at all and further when I go to order them through Digikey there are Ceramic, Tantalum, Tantalum Polymer, and Niobium Oxide options available and I'm not sure which option to go with. If anyone could advise me please I'd much appreciate that as well. NB the blown ones are so utterly fried they look like they've been hit with an arc welder so I can't discern anything from them at all they are just a blob. Thankyou in advance 🙏🤞

Might be a silly question 32:43 in video what is ram training? - excellent stuff by the way 🙂

Where do you get extra caps?

love your videos 🤩, what books do you recommned for getting started i dont know anything about electronics

can you please help me to know what component is the inductor PL5 It is near the area where you connected the cables

How do you remember where all the screws go when you're reassembling?

27:15 Very satisfying.

My old Lat C640 has this same issue....i dont have all the equipment as you do...should I just try to get a new DC jack and install it? it would be faster and cheaper in my opinion

Hi Graham. Nice work. I have the same isue with a laptop, but I don't have replacement capacitors. My question is will the laptop work without those capacitors ? Thank you for an answer.

Hi Graham, I replaced the charging port but has no ohm reading. Where do I go from that?

i have learned that if a laptop turns on without display when you plug in power, its low bios battery. Mostly on HP

Hi Adam, I have same issue with my dell latitude 3380. Please can you tell me where the power capacitor is located so I can change it 😢

HELLO ADAMENT! Am an avid Subscriber, you are my first 'Go to' when diagnosing PC issues! I recently built a new Computer in my old Tower with an MSI Z390-A PRO Motherboard with an Intel Pentium Gold Processor G5400 CPU @ 3.7GHz! Next added 64.0 GB DDR4 3200 Ram! Also a ZOTAC GAMING GeForce GTX 1 Video Card! Recently upgraded all my HHD's with an Intel 660p Series M.2 1 TB SSD Drive C and two WD I TB internal SSD's! My Computer now boots up completely for a cold start in 30 seconds!!!! (Once in a while when I turn it on, it Boots into the Bios Screen)!!!(But when I wont to boot into Bios, no matter what key combination I press it wont go into Bios on Command)! Windows will not display on my Digital Monitor but I can see the Bios Screen on another HDMI Output to my 32 inch TV! Am running XMP Mode and Gaming Mode on the MSI along with allocating 3/4 of my Ram to Process my Adobe Premiere 2022! My Question is: How do I get the computer to Boot into Windows EVERY TIME? And secondly, How do I get my computer to boot into Bios on command?

So, can this laptop be powered from 13.8V in the car? I mean directly without any DC2DC converters.

I need your help. I am working on a Lenovo thinkpad E580 and I came accross a shorted ( looks like an IC) the only writtings on it is (RFAHA). any idea what that is? and how can I get a new one so I continue with the repair. thanks

As Alex says from Northridge Fix KZfaq channel "better than factory". Flux is your friend, you should use more. Nice job!

Did you try to take a look at brymen multimeters? You could take a look at bm869s. I understood that they are almost as good as fluke but cheaper. I have bm867s but I'm a total noob on electronics, so I can't tell you if it's good or not. But it was recommended to me by an experienced guy. I hope it helps.

hi there! where can i look up on diagram on laptops? also parts where can i order? please help mi, inspiring technician 🙂

what is the chipset? how does it work?

Good job 😁

Obviously this is a great teaching tool, that being said for running a repair business would it just make more sense to replace the board? Here in the US you can find used board for as low as $25. Just thinking from a time and cost effectiveness stand point its just not worth while spending that amount of time on it.

I also wonder why laptop manufacturers don't use coin cell holders anymore. Instead they use wired batteries which are expensive.

Nice soldering work Graham. Better than factory? You’ll be giving @northridgefix a run for his money soon!

What battery screwdriver are you using?

were can i purchase the same TEST leads your using ADAM

How can I get in touch to ask you some questions about a 2020 MacBook Pro?

Like ya bought one :)

Wow!!!

The CMOS battery will not prevent a laptop of computer from POSTing. It will mean not settings will be retained if the battery is dead and ask each time on boot, to enter BIOS. The CMOS battery only has two wires for ground and power, no signal. The battery only kicks in when there is no mains power going to the motherboard to retain all BIOS settings. While power is running through to the Motherboard, the battery will not be used. Default settings will be used on the BIOS with flat batteries and thus ask you to enter BIOS to change the settings. Ok, it was still worth changing the battery, however, it wouldn't have stopped the laptop from booting up. Swapping the RAM may have and I have encountered that issue. It is noted that also the larger RAM stick should always go in DIMM slot 1/A1 if you were to use Single Channel and they are two different sizes as THAT can prevent POST and booting.

Campus world however what s going on time over and about it have fun looking interesting things ever again