Asus ROG G731G no power, overvoltage protection circuit diagnose & bypass
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- čas přidán 19. 05. 2024
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21:35 sorin be careful you can get a heart attack
lol, that startup sound scares you everytime.
Hahaha haha yes me too
21:35 priceless! You should make a short video of those few seconds of fear!
I prefer the "Say hello to my little friend!!!!" technique....😂
Lool your reaction to the sound is always fun to watch 😂
Sorin, how did you start removing capacitors, and now you have started surge protection circuits and transistors, I am very much looking forward to the video you will post where you remove the CPU and the laptop will work again. You really are a king..... 😀👍
Thank you for this video Sorin. you are such a good teacher. ❤😊
Great video, thanks
Greetings from Portugal 🇵🇹
Nice proper repair.
learnt alot on this video thnk you so much
This video was extremely helpful. Thanks so much!
ahahah asus 2 sorin 0. they got you 2 times with that sound.
Let’s be honest, his reaction to that sound made our day :))
Same with acer predators. Hahaha. Laptops 3 , sorin 0
😂
Thank God they make gaming laptop and electronics repair shops are doing good business
Yes, probably this is because nearly all components are putted to the maximum limits. Some datasheet states, to keep those components at the maximum levels for an extended periode of time, will effect the reliability of the component. So, to keep all parts within their recommended limits, would mean, here one capacitor more, there a little bit larger resistor, here one MOSFET more, and so on. This makes the product more expensive. So, probably comparing the costs with the amount of RMA repairs, is maybe cheaper at all...
Brilliant repair sorin good work mate
Excelent work!
I went to the shop and said can you help sorin needs a new thingy 🤣
Great repair Sorin
master of masters!!!
Newclesson new learning thank you master sorin😁😁
That's crazyyyyyy hahaha! Thanks for the show again Sorin
I enjoy watching your content I learn so much and you very inspirational. Thank you for the content 💪
Wow! What a lesson :)
This thingy goes 💥 boom 💥 🤣
Thanx Sorin
Hi Sorin, thank for this interesting video... good job bye Francesco Timpano from Florence Italy
great work and analizing every bit second. good job i like your style.. hoping you can guide me too.
That sound had me cringing to.. what a thing eh? Well your sharp my friend.. I really want to thank you for all of these video's you have done for us.. I have learned a lot and at 73 that is saying something.. Carry on!
loved this one, when you use schimatic i understand whats going on.
Nice one
Predator like situation. Hard job.
Nice! 😎
Impressive.
Sorin , take the speakers out next time please , im getting worried now 😅 Nice work, tank's
Love your videos on your style.
I was thinking to send you a laptop. Nothing wrong with the laptop, but I was thinking of making lighter by removing components 😂😂.
Hi Sorin, thanks for your videos, they teach us a lot about repairs. Any idea why the voltage on the gates of the input mosfets are so high? Usually a voltage of 10-12 volts is enough, there are also logic level mosfets that need less than 5V for the gates to open and to work fine. Thanks.
solid idol
Was that component you removed an optocoupler? Trigged by the transistor at the back of the board?
Sorin for president
Great process / diagnosis . All those little steps got to ' We have Picture ' ... nice one.
nice
That sound takes my soul always whenever it gets opened back automatically. It's creepy, thanks Asus.
Please please please change your mouse cursor to a black one so when you go to a schematic we can actually see where the cursor is on the schematic.
Sorin, would you solve the problem just shorting out the first Mosfet as usual?
Proper nice gaming laptop sure Sorin but desktop with same specs is no match
But it is same specs ?
21:36 mini heart block ❤😂
Great result - so much overkill in the design of the power supply.
I believe Sorin made the circuit more efficient 😅this signal is coming from a voltage divider between the mosfets gates and the driver pin of the BQ, by the look of things Sorin bypassed this circuit .That IC which is an opamp circuit, probably driving the transistor off when the power is present but the chip is clearly faulty and not doing it's job. I was going to say that maybe a pull up resistor might be needed instead of the transistor but no the resistors exist already
Could it be an opto isolator for some reason
That thing is maybe an opto? I’m thinking some logic through the BQ chip operates it in order to take 19v and spit out whatever the gate on the power mosfet needs to send voltage. 🤷♂️ I’m probably wrong though
👍
this asus are going to give you a heart attack one of this days
21:22 - Its working, without the overvolt detection thou?
OUVLO supervisor? ESD diode array?
I hope you put thermal pads as well... they are all gone when you took off the heatsink!!! VRMs and memory.
Sometimes they over design these laptops and fit protection circuits that cause more issues
than they prevent.
It is interesting to see how may repairs are due to shorted capacitors which then take out other
active components.
After all these years they still can't make reliable capacitors.
I have been replacing them since the late 60's.
The main reason capacitors in laptops break more often is due to being dropped soft and hard frequently. In contrast, desktop PC motherboards rarely have cracked capacitors because they remain stationary.
@@mart43 That might be one cause of failure, but i repair consumer electronics and modern surface mount
capacitors are a very common source of failure, even in items that are not portable.
Does it matter where you place your voltage injection probe
May I ask what's the theory of injecting 19 volts into the input? Isn't that suppose to be a very risky approach? Or because it's the main power rail at the very start of the input it does not matter
hello which video did you test laptops at 25v? i cant find it.
I did see it, but hard to find
genius...
17:48 we have 14.42 Volt and some time later 19:45 we have 1.075 on same ponit how 🤔?? Pls explain me.
I believe thats the 2nd time you got startled with that same sound LOL 😂. We always think somethings got blown up
😂😂😂😂 that sound Sorin will probably get you down one day
Perhaps it is a zener diode
All I can spot is a raging Volcano 🌋 🤣
Optocopulor it
I hope someone work on it l think soo😮😮
Hahaha, sorry but I could not avoid to replay the scaring scene five times. I know that sound is crazy, but funny hahahaha
Hello guys,I raised the cpu voltage from 0.7V to 1V from bios after it restarts only black screen nothing else.please need help
how can i contact you mr sorin
Asus ROG laptops and their boot sound have been terrorizing customers and technicians for many years now
Here's what I think.
I think Sorin's hot air works 10 time better than the hot tweezers
How u knew thats the one transistor you should remove at the end?
Gaming and laptop I would not use in the same sentence.
I have like this type laptop. Mine was G531G. The problem same, have no power. Was serviced twice. Then the chipset blown. After that im surrender then sold
What are common causes of black screen but the computer runs normally?
Looks like it it's coming to BIOS screen but nothing remains black
I THINK THE BLOWN UP CHIP IS AN OPTOCOUPLER
AND OF COURSE THANK YOU SO MUCH ALL THE TIME 😊❤
Hello🤝👍👍👍👍👍👏👏👏👏👋👋👋👋👋
well, goodbye overvoltage protection for this laptop...🤣🤣🤣
I don't understand something. at minute 17.50 there are 14 V on pin 4, then at minute 19.48 it is 1V.
Do you sell laptop?
Looks like opto coupler
Laptop risen from the dead going at Sorin... BOOOOO! Bu hu huuu 🤣
😂😂😂😂 Sorin Your reflex action was LoL haahha
That solder ball on the input mosfet was disturbing. I hope you removed it before closing up the laptop.
Scares you every time 😅
Dear Sorin I have two apple macbook not start if I can send to you one frist to fix then the other I live in Holland put no trouble I can send per post and pay per bank then u send back if its possible I will be very thankful
Francis
As Sorin said countless times he only accepts work from within the UK due to huge shipping and insurance costs sending stuff back outside of the UK
21:36 :DDDDDDDDDDDDD
Its the third time you got scared 😂😂
21:35 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
The removed device looks like an optocoupler.
What's better than faulty capacitor? No capacitor. What's better than faulty over voltage chip? No over voltage chip. What's better than a good transistor? No transistor. And we have picture.
It's a voltage regulator
We heard it 😹
I hope your electrician believes in fuses and your plumber in safety valves.
no capacitor no short :)
Yeh it works for now, but next time it overvolts, dead laptop
That’s why in spite of my admiration of his knowledge, I dislike his dodgyness
He explained that many times, including in this video, at 22:25. But overvolt how, the charger has overvoltage protection itself
@@satsumagt5284I think a lot of times, his knowledge is so deep he actually knows better than us what can be left out. A lot of people used to be furious he is not replacing the capacitors, now more and more understand why...
Wire where is Wire
This is emotional damage...
that sound is against Geneva Convention.
21:36 AAAAAHAHAHAHAHAAAA this is so fking funny aahahahahahaaaaa