Hey Alex, I owe you a thank you. My profession is in no way related to electronics. Still I enjoy watching your videos because I find them very informative and interesting. All the hours watching your videos paid off unexpectedly last night. I bought a train set for my toddler son. I reached home and to my dismay I found that it was not working. I opened the train up and discovered that a wire and another component was disconnected. I got a brand new soldering iron and fixed it entirely thanks to you. From your videos I learnt what a solder wick was and what flux was. I learnt how to solder from watching you. I used that knowledge to fix my son's train and the joy on his face was the best part of my day. He wouldn't let me turn the train off for hours after that. Thank you so much. You touch lives in more ways than you realise.

We bought some flux from you Alex. I work for a major theme park in Florida, we’ll leave it at that. Point of comment? That stuff really is the best, thank you Alex

Hi, I’m french and I repair too. Your videos are awesome for me because you give us many explications during your interventions about generalities from électronic theme. A big THANK from France 🇫🇷 👍✌️

ALEX I love 💕💕💕 watching your channel, I owe a repair shop in Ghana, thanks an God bless you for all the videos you have been posting

hi alex, sorry my english, you are really smart, both as a man and as a repairman. I admire you very much, you are very knowledgeable on the subject.

Thanks for sharing your knowledge Alex.

You really doing a nice job keep it up

Today I get to see big boss he always work behind scene...nice catch big boss atleast Alexs work was alot easier thanks to you.👏👏

High fan speed most probably related to BIOS especially hardware changes or incorrect setting. Perhaps solvable by resetting the BIOS or check BIOS setting again

Excellent. I have been scammed SOOO many times on ebay and Amazon with knock-off Amtech Flux. Glad to see you are direct.

For sure you know, but just in case: many laptops that are always used with an external monitor and keyboard have the internal keyboard disabled in the bios. I don't know why IT people set it up like that, but it is my observation. Maybe check the keyboard in the bios itself and ask the customer.

Alex + Big boss Thank you for your experience sharing!

This is a good lesson for today how to repair a short. (THANKS)

12:50 That keyboard connector is very finicky. Have to get it EXACTLY straight into the connector, if it is slightly angled then it doesn't get detected because the pins don't go to the right places. At exactly 12:50 you can see it is still a little crooked when he flips the connector closed. And its hard to lift the keyboard up and get it straight because when you lift the keyboard up it tugs the cable to make it angled. So you have to do it half blind peering in from the side with the keyboard right above the connector when you plug it in to get it straight. My Inspiron 15 inch is exactly like this too and it took me a couple of hours to get it in right.

Good job mate.

Good job done......BIG BOSS..

Thanks, will check it out if I can purchase those booklets from my country, here there are a lot of customs issues so I have to check it first.

Really amazing. Perfect work. Maybe the keyboard isn't working from the beginning. Great job

Awesome🌹Greetings to Big Boss⭐️🌹🌹

Great fix

Have a good day, sir :D

great video sir very very informative

Based on your videos I always wonder whom do you call (scientists from complaining) today I saw them in comments section ! Lots of scientists are there.😄😄😄

Big Boss with the Eagle Eyes this time.

Big boss, moving on up'

Very nice sir ✌😃

0:50 A slight discoloration on cheap motherboards is good indication that somewhere in this specific area the temperature of components are rapidly changing . This is normal if one side has good heatsink and the heat has way to being took. Other side doesn't have to. Copper when is heated it expands. Soldermask (green color on motherboard) do not expand. Thats why it makes discoloration of expanding and shrinking copper plate.

A single cap saves the device, amazing!

I did try different amtech fluxes from ebay aliexpress but non of them are as good as yours to be honest. Same thing with the desoldering braid wick.. yours is the best

How do you detect the polarity of a capacitor or it just works direct anyway you place it just like a resistor??

Did you ever win against the Big Boss? Great work. Keep it up. I am reading the art of electronics 3e. Someday, I wish to be like you.

I am not sure that a faulty keyboard would make the fan spin at full speed. Dell laptops are very picky with anything. You could reflash the BIOS. I had a similar issue in the past, the got fixed with BIOS reflashing. No user would want to use the laptop with fans at full speed all the time.

Big Boss has great skills.

Awesome

Awesome ✌🏻✌🏻✌🏻

I hope u do more macbook repairs especially the recent ones dont know why but there are almost no macbook reapair guide videos in youtube

A bad keyboard rarely makes all the keys unresponsive. I think the issue is most likely on the motherboard

Hi mate which camera you Using thank you

Nice 👍🏾

I've powered on my 7559 with no keyboard connected before, and that does not make the fan spin faster.

Why do capacitors not have a written value on them like resistors?

Good

nice Vedio ☮️👍

why dont u attach keboard tester to know for sure?

7:40 "Do not inject yourself with flux. It's not good." LMAO. Nice one xD

hello do you have video how test faulty components on motherboard and how use multimeter if not, can you make short video how use .

Good morning 🌞 eng.

عمل موفق باذن الله استمر يا مبدع والى الامام وكل عام وانتم بالف خير

Do you have a t-shirt with "Do not inject yourself with flux" 😂

Dell Inspiron 15 7586 2-IN-1 15.6" Laptop This laptop will not turn on, it has no power at all. No indicator light when charger is plugged in. Please kindly guide me on how to fix,what could be the issues please?

👍👍

Do you ship to Lebanon Please ?

Fan speed, cant it be the BIOS setup?

07:12 what will happen to empty syringe? , recycle or what

Brazil! 😃😃😃

I'm trying to find those chip on the website but I don't know if I'm just overlooking it or I can't find it. Edit: Found it! I had a filter on, oops!

tell big boss to snap the back cover back on, he doesn't have to screw it in and see if that tames the fan....i haven't done it with that model specifically but on certain latitude models without the cover on the fan ramps up like that....if that doesn't work reseting bios to factory might

Did you also used oscilloscope in your repairs?

super io arızalı. Klavye değil. Termal protokol de düzgün veri işlemediği için yüksek fana sahip olabilir. Bu bir tahmin.

The thermal paste needs to be reapplied probably dried out my old hp laptop fan sounded like a jet plane I cleaned old thermal paste reapplied and is now quiet

Mw firmware and bios update will fix spin issue.

My role model and my teacher can you explain please about resistance mode and how to know capacitors not shorted to ground beeping because of other think is shorting the capacitor. Please share us those like me loving you loosing their rest time watching you .

This is why I hate laptops. Fix problem and find another issue. Sent one out to a repair place. Took about 3 months. Had to order a part. Fixed it and found another issue. Had to wait for that part. Oh, and this is years and years of trying different repair places that was a bust. At least we finally found one that seems to do good work for a great price and a reasonable turn around time. Really didn't have a choice. Most stuff is only from China now or $$$$ or both. So that place we use is $250.00 + s/h both ways. If they cannot fix it. You just pay s/h. They also don't work on just boards or machines that have been opened up and put back together. Though, we are exempt for that part. Don't ask me how.

Ein defekter Cent Artikel und der Laptot ist tot. Nur Alex repariert so etwas - unbezahlbar !

Can these capacitors have 10uF value? Do you mean 10nF? (uF microfarad) (nF nanoFarad)

Maybe south bridge is faulty. whole keyboard rarely dies like that without being drown.

Thanks for sharing this video👍, I also have Dell Inspiron 15 7559 laptop with same issue. I have given it to dell authorized service center. I am from Pune India. Do you have any advice to me? Laptop got wet and caused this issue.

High fan speed and non-working keyboard implies that the Embedded Controller is not doing its job right. Could be its power, bad controller part, in need of reflash, or (usually) just in need of reset to default values (see system specific steps for how to do that).

when I had that laptop I had a 3rd party software to blast the fans at 80% all the time otherwise the cpu cooks itself. pains me to say was probably connector damage during disassembly. should be an easy fix for somebody as skilled as you.

Why inject 1.2 volts to see short , why not 5 volt or 10 volt ??

Hello. you need to buy a laptop keyboard tester, connect the cable to the tester, press the keys and hear a beep from the tester confirming the operation of each key.

Should try a firmware update for the laptop

If the other caps are in parallel and are also shorting to ground why don't they heat up also

I couldn't help but notice that literally every SMD cap or resistor on this board had a solder blob on it. From the factory. It's just a matter of time until this board's dead again. But hey, you're getting a Dell!

I suspect the owner of swapping the keyboard to make another machine usable. But they forgot to tell you.

Hi Alex, I'm from Philippines. And I just want to ask something regarding my laptop. My laptop model is Lenovo Ideapad S145-14IGM. It started on July 7. I charged my laptop, not checking if it was charging or not cause it was just the usual. After 2 hours, I started using it thinking it was fully charged but when I saw the battery icon in the screen, it was only 39%. I was wondering why it was not fully charged but ignored it anyways. So as I was using it, I decided to charge it and was shocked because my laptop did not charge at all. I plugged it to another port and at first, it charged. I glanced over it again and now it was not charging. I wondered why. It never happened to me. I got back where I was usually charging it and plugged it again there. The same scenario happened. Puzzled and scared, I looked at the charging pole of my laptop and saw the orange light blinking when it was supposed to be steady. I can still turn my laptop on and off. The only problem is that it is not charging and the orange light is blinking. I can't check if the charger or the laptop is faulty as this is the only laptop and charger in the house. Can you tell me the problem please? I'm so sorry if I bothered you with this question. I asked the people I know who use laptop but they don't seem to know. I also tried searching but there was no case similar to mine.

Am from hoima Uganda can you send to me thermal camera

keyboard problem can be from keyboard controller or bios.Try bios update

Does anybody else realize the fans ramping up is a great self destruct feature for liquid damage? It’s sus AF.

dell bios has supportassist which will check every hardware for error,from keyboard to fan,ram to harddisk,power or cpu overheat or cmos battery and it has ability to go online and download required driver directly from dell

Pavilion 15 came for no power, fixed it easily the charging port connector cable was severed, replaced it with HP part, reassembly, keyboard isn't working, then customer ask for a new keyboard (palm rest assembly in that case) I say no, proceeds to trash laptop in my face and leave without paying. I got a donor board for free, too bad for that screen tho

You know this is an old notebook because it has an easily replaceable keyboard, not held by those hundred plastic rivets.

and it softs like a normal honest opinion. I get that so of you are joking, but could you please let it be. I

What's so special about this flux? (Serious question)

Missed a trick by not saying " injecting flux does not cure covid" hope that made you laugh, much love from England

How are u

You should read tNice tutorials for motivation!

My dream can get the thermal camera but i dont have money to buy 😢 please sponsor 😞

Can you gave me the job in your office

dont inject flux ... 😂😂

Aren't you sleepy.. I fixed a same laptop once.

Came in for no power.

V.

2nd

First☺️

i can hear the scientists crying over the lack of an absolute perfect capacitor. even though some have +-20% range stated