How to repair Laptops using Schematics, HP 4540s no power repair

Рет қаралды 20,742

2 жыл бұрын

In this video, I show you how to fix a dead HP Probook 4540s motherboard using schematics diagrams, We trace onboard IC from the schematics measuring with a digital multimeter to find out the root cause.
This motherboard couldn't allow 19V to go through the first MOSFET because of a missing ADP_EN (Adapter enable) signal, we traced back and discovered a burnt diode that disconnected power from the standby chip which creates power for EC to release adapter enable signal.
Check out my first videos about laptop schematics repair to easily understand this video.

Пікірлер: 100

@dzabakwesi2213 10 ай бұрын

This guy is good. I don’t get tired watching his video. He really know what he is doing. Keep it up Sir Chaz

@alimoradi2323 2 жыл бұрын

One of the best repair videos I've seen lately. Well done man. 👍

@platinumphonesandcomputers 2 жыл бұрын

Thanks you for appreciating🤗!

@015diesel Жыл бұрын

This is by far the best laptop repair video I have ever seen and believe me when I say I've seen a lot!! Thank you very much for this, God bless...

@platinumphonesandcomputers Жыл бұрын

Wow, thanks!

@isahizhenfahm6576 Жыл бұрын

Amazing. Just amazing. I swear I'm wowed I won't have ever thought of using this method of repair. I'm glad I learnt something new today. Pls be consistent in your upload. We still have a lot to learn from you.

@platinumphonesandcomputers Жыл бұрын

Thank you, I will try my best

@joziphstu Жыл бұрын

This is one of the best laptop repair videos out here on KZfaq Subbed to your channel

@platinumphonesandcomputers Жыл бұрын

Thank you buddy

@theevidenttruth.5361 5 ай бұрын

I was like, this video is so boring, but I just had to watch it till the end and well, it got quite impressive and and informative. Nice detailed video bro. Keep up the good works.

@platinumphonesandcomputers 5 ай бұрын

Haha thank you

@theevidenttruth.5361 5 ай бұрын

Make more videos like that one.

@florentinoaguilarjr3364 2 жыл бұрын

Thank you for this video sir, at first I struggling on how to use the schematics but with this you make it easy to understand

@platinumphonesandcomputers 2 жыл бұрын

You are welcome

@Martin-ot7xj 2 жыл бұрын

Hi there, please upload more videos like this. it was awesome and easy to understand. keep it up. thnx

@ricks3754 11 ай бұрын

thanks man u encourage me to learn how to read schematics

@joelemons8587 4 ай бұрын

That was brilliant, well done.

@CHRISMEKADO 11 ай бұрын

You are good teacher, God bless you.

@funkyboyz1344 Жыл бұрын

This is one of the best laptop repair video! Great explanation thank

@platinumphonesandcomputers Жыл бұрын

You're welcome!

@happymatekenya394 Жыл бұрын

This is just the video I have always wanted thank you sir for your knowledge. I am 100% confident to work on my laptop now even though I dont have hot air station😂😂😂. All in all I am thankful

@morto360 2 жыл бұрын

Really good video!! I would love to see another video where you go a little bit more into how to figure out where lines are coming from. Basically what you did now with the tracing the power path, but maybe with a bit more explaination. I am often confused on where a line is coming from or where its going, especially when looking at apple schematics.

@platinumphonesandcomputers 2 жыл бұрын

Oh I get what you are saying, actually a simple way to know the direction of power flow in schematics is from left to right, on top of that you can also the arrows at the end on the line, plus trace for words like "in" and "out"

@erisco2011 6 ай бұрын

wow, that was a good one. thanks for sharing brother.

@etg9080 Жыл бұрын

Great job, continue working with schematic diagram. We will make our laptop soon or later.

@platinumphonesandcomputers Жыл бұрын

Exactly, that's the mission

@fredtembo1591 Жыл бұрын

You are the best buddy, keep it up

@tionmuasa3830 7 ай бұрын

Doing a great job man, well done 👍👍

@platinumphonesandcomputers 6 ай бұрын

Thanks 👍

@generalndlovu3639 2 жыл бұрын

OOOh my brother you're the best i've subscribed to your channel keep it up may god bless you

@platinumphonesandcomputers 2 жыл бұрын

Thanks brother and welcome

@philemonkipkoech3764 2 жыл бұрын

Wonderful, really enjoy thumps up Boss

@platinumphonesandcomputers 2 жыл бұрын

Thank you

@Skarz289 2 жыл бұрын

simply amazing video and amazing repair

@platinumphonesandcomputers 2 жыл бұрын

Thank you! Cheers!

@cristian-dduminica5462 2 жыл бұрын

You are very good. Thank you!

@platinumphonesandcomputers 2 жыл бұрын

You are welcome

@meherhjb7170 2 жыл бұрын

Great explanation thankx man

@platinumphonesandcomputers 2 жыл бұрын

Your welcome

@ashoksamal7894 2 жыл бұрын

Thanks bro, the best explained video.

@platinumphonesandcomputers 2 жыл бұрын

You're welcome

@ewoukemngnia2568 2 жыл бұрын

Thanks bro, amazing video ..

@platinumphonesandcomputers 2 жыл бұрын

My pleasure

@DOC-COMPUTERS 2 жыл бұрын

this guy is a genius 👌

@platinumphonesandcomputers 2 жыл бұрын

Thank you

@tobiasmpicha1244 7 ай бұрын

your a genius good work mr

@platinumphonesandcomputers 7 ай бұрын

Thank you

@konrad0308 2 жыл бұрын

Very good video man

@platinumphonesandcomputers 2 жыл бұрын

Thanks man

@onurolce 6 ай бұрын

Perfect !

@danielmuregi9088 2 жыл бұрын

Great work bruh

@platinumphonesandcomputers 2 жыл бұрын

Thanks 🔥

@johnmaina8122 Жыл бұрын

Your work is perfect, can you do a video of hp 8440 that lights then go off immediately. Kindly

@Martin-ot7xj 2 жыл бұрын

Hi there , your explanation is very good ,please make a tutorial video about how we can read Schematics for beginners . thnx

@platinumphonesandcomputers 2 жыл бұрын

I created them, check them out here. kzfaq.info/get/bejne/ftqSdqWdstGtaWQ.html

@Martin-ot7xj 2 жыл бұрын

@@platinumphonesandcomputers yes i saw them and it was perfect but im waiting for part 4, you didn't make it yet. Please make it as soon as possible. As i said you're explination is very good especially for beginners. Please make tutorial video part 4 for us. Thnx

@harrydavid1964 10 ай бұрын

Thank you very much

@platinumphonesandcomputers 10 ай бұрын

You are welcome

@edmondkwame847 2 жыл бұрын

I like the way you teach you make things clear to understand thank you more videos. Do you have telegraph where i can down some of your schematic

@platinumphonesandcomputers 2 жыл бұрын

Thank you, Telegram not yet

@udohcedar870 2 жыл бұрын

thanks sir you are the best

@udohcedar870 2 жыл бұрын

i really need your whatsapp contact sir

@platinumphonesandcomputers 2 жыл бұрын

Most welcome

@platinumphonesandcomputers 2 жыл бұрын

check my website

@opposites-369 2 жыл бұрын

Old type of Mosfet for older laptop type 🤔, please when you open schematic zoom so I can clear see from my Android phone 👍🏻

@alexandragroza2611 Жыл бұрын

So in my case, on that mosfet, from ground to drain i have close to zero volts and between gate and drain or gate and ground i have just 0.6V But i have no schematics and obviously not enough knowledge. Is it possible to be just the mosfet? I know, they don't usually die alone, but it would be a personal achievement to repair this laptop, if you could give me a hint

@rodneylonihoresi9169 Жыл бұрын

Thanks for watching

@tabujoe1 7 ай бұрын

Bro I have 3 laptops same series with the same problem of no power starting the laptop. I think this is good.

@platinumphonesandcomputers 7 ай бұрын

Sure I think if you follow you can successfully fix them

@sfx94h 10 ай бұрын

Very excellent explanation... I have a question. I have the same laptop. One of the sot23 parts was damaged in it... and I do not know its value or number. Can you help me... I want to send you a picture of the damaged part. Do you have a way to contact you, my brother?

@platinumphonesandcomputers 10 ай бұрын

Do you have its schematics, you can get the chip number from the schematics.

@sfx94h 10 ай бұрын

@@platinumphonesandcomputers Thank you for your response... Unfortunately, I do not know how to read the chart... Thank you again for your response and I wish you success.

@FACTSWITHHELO Жыл бұрын

Hello sir I have a problem which is when I charge my laptop there is no light and no power can you tell me please

@adanetakele8875 11 ай бұрын

Am watching your videos it's really amazing but i when i read schmatics diagrams i am fighting with symbols and abbreviations can you help me with that? Thanks for your time

@platinumphonesandcomputers 10 ай бұрын

Actually I have a video about schematic signs and abbreviations on this channel

@user-wb4lf3in5c Жыл бұрын

Possible download link

@dzabakwesi2213 10 ай бұрын

Sir please is the gate voltage always half the main voltage or it is been determined by what it’s schematics say. Thanks

@platinumphonesandcomputers 10 ай бұрын

No, in laptop motherboards its usually between 3.3 to 6 volts

@dzabakwesi2213 10 ай бұрын

@@platinumphonesandcomputers thanks

@abkrinoegp Жыл бұрын

what I did I changed the dual channel mosfets I did not find any in the store what I did I took alook at the data sheet I soldered two normal mosfets gate on the gate from the data sheet and the drain on the drain from the data sheet I got back the 5 mtsc

@platinumphonesandcomputers 10 ай бұрын

Did the motherboard work well after?

@sir.simonthemagnificent9016 2 жыл бұрын

Your what's up no don't seem to work,is it still valid?

@platinumphonesandcomputers 2 жыл бұрын

Yes it's valid, put my country code +256 and I will be able to receive your message

@onlineunica5252 2 жыл бұрын

What is the program to show the schematic you used?

@platinumphonesandcomputers 2 жыл бұрын

Its Sumatra pdf reader

@onlineunica5252 2 жыл бұрын

@@platinumphonesandcomputers thank you, but can you share this schematic. I cant search on the internet

@jaychan9436 2 жыл бұрын

How u got the schmatics?

@platinumphonesandcomputers 2 жыл бұрын

kzfaq.info/get/bejne/lZtpo9qIst61qXU.html

@abkrinoegp Жыл бұрын

i need help I have a problem with a motherboard I bring the voltage back but all of the ic does not work volt 0 I thought the problem with ic but the problem with the cirucut it self got another working one the same result no voltage all of them there is vin no vout

@platinumphonesandcomputers 10 ай бұрын

Its really hard to help you without more context

@abkrinoegp 10 ай бұрын

@@platinumphonesandcomputers it worked i had to chosse either to fix short cirucut or to fix fix it with ohms this short cirucut is hard to find i had to take a look at the schematics you have to fix short near cpu first

@paulhounake1052 2 жыл бұрын

Pardon aide moi pour ça aussi looo merci pour la traduction de l'autre vidéo que le créateur vous bénisse

@platinumphonesandcomputers 2 жыл бұрын

Merci beaucoup

@shehanjayathissa-xv6gy Жыл бұрын

do you have board view file

@platinumphonesandcomputers Жыл бұрын

No I don't have it, but you can trace the components using their labels

@awengmacaraeg3293 2 жыл бұрын

Hello sir do you have Schematics diagram for HP 242 G2 motherboard code: 0605A2593401-mb-A02 please help because the mosfet transistor can find the marking code.because the component is bloated.thank you

@platinumphonesandcomputers 2 жыл бұрын

check for its board number on google