Acer Nitro 5 charging circuit diagnose and how to disable a faulty GPU & VRAM

[@kepler104]

Going for a 20 min walk, Sorin uploads a 20 min video, perfect

[@winlose3073]

this is a moment to salute the laptop from the previous video that had a separate GPU board!!!

[@Timpano_Francesco_Repairs]

Hi Sorin, good job you save the laptop....is not a coplete fix , but OEM wont you can't be able to repair don't worry.... but customer can still use the laptop and this your win... bye Francesco Timpano from florence Italy and thank for the mouse curson modification, noe is a pleasure follow you🤗🤗

[@stefan7231]

You should really get into VRAM diagnosing, reballing and replacent :D The error that you got in the task manager doesn't mean that the GPU is dead but it can't be fully initialised and in most cases, it's just bad VRAM. I'm pretty sure that it can be repaired if the VRAM is replaced.

[@TheXlen]

I mean the error itself doesn't mean anytime is faulty, corrupted VBIOS can cause this issue quite a lot not to mention other scenarios, but here I'm inclined to agree with Sorin, GPU throwing errors here is a very bad sign

[@stefan7231]

@@TheXlen I've done my fair share of GPU repairs and by my experience, this is just a dead VRAM issue. If the data lines didn't receive any voltage, the core is probably good. Worth a try for someone who has RAM chip and can replace them.

[@TheXlen]

@@stefan7231 I mean sure, but I also understand Sorin, it's a big risk and most likely not big return job.

[@Dohcoms]

Excellent work, Very educational video, Thanks!

[@retrocomputinggrotto]

Its a real shame manufacturers stopped putting GPUs on a removable board. They'd much rather you purchase a whole new laptop I guess.

[@saijyo8549]

Because 80% customer wanna slim laptop with rtx 4090 full power that why. I prefer thick laptop, with upgrade CPU and GPU.

[@shai1985]

Hi Sorin, great work! But im not confident the VRAM is dead. I think right approach is to replace the mosfet and check.

[@giulianoyula]

Thanks, learning a lot , congrats from argentina

[@soumyaranjanmoharana4804]

Can you try replacing the removed mosfet? Maybe the yellow triangle is due to absence of adequate power for ram?

[@Tribes11]

How could manufacturers prevent the mosfet failure to deliver 19V to the GPU/VRAM Power rails? Using Zener Diode to ground would solve this issue? I'm asking because I'm thinking what kind of modifications I could do after the mosfets to prevent the high voltage to be delivered straight into the GPU/VRAM chips.

[@rfr653]

Good job mate 👍

[@supermetaltastic]

At 9:40 is the probe connected to a power supply or a multimeter? Where is the other end of the probe touching? I want to see how many amps and volts my battery is getting from the mother board.

[@gyoerdy7832]

Power supply, the black probe goes into ground

[@supermetaltastic]

I got it. The black lead is plugged into the charger port and back to the power supply. I was confused because I thought that was the actual charger that goes into the wall.

[@supermetaltastic]

Okay so I just need a DC power supply that can output 20 v and 11.5 amps and an adapter to plug into the back of the computer.

[@BootedTech]

4:34 - Sorin, why you not test after removing the vram dr-mos? They can be short to ground, not always to 19v, meaning the vram got grounded, not burned..

[@electronicsrepairschool]

I did but forgot to include in the video, there was same 7ohms even without mosfet/s

[@darcyke]

Great Job thank you

[@sullah1986.]

Hi, Sorin what is youre method for remove black epoxy glue that is under the lenovo apu ?

[@SamiTM]

Can you put a current sensor on these laptops so if they get shorted to protect the v-ram and gpu? Also for CPU?

[@unknowndimensions7387]

Love your work

[@stellataylor9326]

Interesting comparison cause you cannot find a brand new unused kidney either 😅 All you can find are taken out from donor bodies. But yeah, probably finding a good kidney is easier than finding a working, good Nvidia chip 🙃

[@g4z-kb7ct]

in the dark side, with the right person and the right amount of money one can obtain anything ;-)

[@uttamx2016]

@@g4z-kb7ct If we pay money ,anything can be obtained but not new kidneys

[@davutozturk3348]

Thanks good job.

[@marwanFX483]

At what temperature did you desolder and solder the charging IC? and the airflow speed

[@electronicsrepairschool]

480C -50%

[@Pihmusik-PiCh-Expert]

Dobra robota kolego!!!!

[@lucataszarek8782]

Hello🤝good job 👍👍👍👍👍👏👏👏👏👏👋👋👋👋👋👋👋

[@Seanjones1990]

if you add more wattage to a laptop but you ensure the components are cooler (thermal putty replacement ect) is there any real risks(75/80c max temps) 125w max to 175. (g14 4080 vbios replacment)

[@joakoc.6235]

If you buy an used GPU + VRAMS you are gonna expend over $350, for $500 you can buy a working motherboard tested, so there is no point on replacing the chips with the work it will take if for only $150 more you can get a full working motherboard. A few months ago I bought the motherboard for my Nitro 5 that had a dead CPU and is working perfectly again, I also upgraded from an i5 to an i7 because it was only $30 more.

[@Dr4g0n2006]

Sorin, what about external GPU hooked to the laptop . Yeah you need adapters and another PSU but its a great compromise compared to gaiming on an integrated graphics card 😂

[@SOveMihai]

If a single ram chip is bad the gpu will not produce image but the nvidia chip is detected. Exist tests to find what memory chip is bad and you can replace it. The nvidia chip is not damaged only the memory is

[@Customer22374rt]

both damaged been there done that . VRAM power circuit also powers memory controller inside GPU chip

[@TheXlen]

The thing is that you never know before you replace the VRAM chip that's faulty and best case scenario you replace the whole set to avoid stability issues

[@TheXlen]

The thing is that you never know before you replace the VRAM chip that's faulty and best case scenario you replace the whole set to avoid stability issues

[@pcbugs8007]

hello Sorin I have never tried disabling GPU is it the same logic in all nvdia chipsets? what about amd discreet GPU?

[@electronicsrepairschool]

Sure, can be disabled in this way any dedicated gpu chip

[@aliemlek]

👌👌👍👍

[@blandon93]

BQ send too much current to VRAM? Or just random death?

[@g4z-kb7ct]

it's been proven on this channel many times, gaming laptops are junk designed to fail. Gaming laptops are made to separate large sums of money from suckers who have too much money. Better to buy a real PC for gaming if you must and use built in gfx for a laptop, less heat, less likelyhood of catastrophic failure. I'm still using i7 6th gen Toshiba Portege top-of-the-line all-options Z30T-C laptop from 2016 that I picked up in 2019 for $300. Works very well and boots W11 in 4 seconds.

[@helinghaus]

was it the gpu or the vram? or does the intel uhd use the vram? i was just windering if the vram was replaced it would work. As i am pretty sure the sone will be gutted his laptop won't work as before, but of course it at least it works he'll just have to lower his specs on his gameplay

[@1738Creations]

Because why would the manufacturer sell you a GPU when they can sell you a new laptop. So long as people keep buying this garbage they'll keep making it. That's why the master race don't take anyone seriously who says they have a gaming laptop. We have more respect for console gamers.

[@payusavisit3482]

Can you ignore the error messages and keep those mosfet? Is it possible

[@matmar4758]

dar de ce s-a dus acel mosfet ? putem preveni asa ceva daca avem acelasi laptop ?

[@venerandarain3]

For All viewers, Never Use Gaming Laptop to Play Heavy game, it just wasting all your money. 😅😅 you better spend that money to build A better Desktop PC. 🥂

[@tubejoust]

can you not get a motherboard with a shorted CPU and get the GPU and vram from that???

[@mihaioleniuc1642]

Nice! 😎

[@findthatvin3817]

bahot hucha kam

[@chumatez]

Nice one

[@yonnathanchacon645]

Can you repair the cpu for Acer nitro 5?

[@vkp111]

How you konw that cpu has a built in gpu?

[@MattyEngland]

Me: But Sorin I order proper calibrated human kidney, not horse kidney Sorin: Well if horse quack like a duck....

[@OMARENGG22]

Its very sad to see a decent gaming laptop go flat like normal one 😢

[@Kiburici]

You need the other mosfet at vram for gpu be enabled :(...

[@electronicsrepairschool]

No, should work fine only with one, even in long-term

[@Kiburici]

@@electronicsrepairschool one its powering half of them !!

[@electronicsrepairschool]

no, please check the schematics, both power supplies are in parallel mode

[@Hefaistos95]

You didn't have to look for a replacement chip... you could find a replacement motherboard that has the chips in order and just replace it with the one that's there now and the problem would be solved

[@MrRvdbeek]

Sorin, You have so much faulty nitro 5 Boards last half year. And not all gpu. But dead . Can the customer send it to you for spares. So you can make the world a better place recycling a little. and maybe you fix one .

[@martyn9098]

does anyone know how to disable rtx graphics on a ryzen board?

[@niksbrotha]

Ryzen doesn't have a built in GPU, if you disable the rtx graphics then you basically have no image. I may be mistaken but I don't believe I am. Remove the GPU Driver Mosfets and remove the GPU power mosfets to disable it.

[@martyn9098]

@@niksbrotha The Ryzen 5 5600H processor has Radeon RX Vega 7 integrated graphics processor according to the specs online.

[@Takashita_Sukakoki]

What are the chances that only Vram chip(s) died and the gpu lived in this case?

[@Bruuhhhhhh]

I wonder what is it exactly that Acer did so wrong for so long with the Nitro lineup that they're so bad.. The amount of faulty nitro 5 i see everywhere is astonishing, even older models with gtx 1050 all the way to rtx 3060 they all have common issues like this.. It's crazy to think about it because their predator lineup even though it doesnt have the best reputation for being reliable, they dont seem to fail as often or as bad as the nitro laptops

[@uttamx2016]

Govt must force to such companies who do not want send such IC in market and this will create lot of e wastes in environments

[@jhoanzus3578]

why does all nitro 5 fails within the first 2 years? (mine did)

[@brucewalker1908]

I get so confused. Every Laptop is different. Identifying what is what and where there located.

[@DIYRepairHour]

Uh, 7ohms on VMEM rail is bad. The only way to check if Nvidia chip is good is to remove either the chip or all memory chips and check for FBVDD resistance. But most of the time all are shorted.

[@tameratmekonnen1192]

it doesn't feel complete that you send that laptop without replacing the mosfet and test the gpu.

[@pcka12]

If you are going to buy a gaming laptop you really need to buy the insurance with it because of all those highly stressed components in a tiny space!

[@gabrielshaw4729]

That laptop has been abused...Tell that gamer to stop taking his losses out on his computer....It's not the computer that caused him to lose!!

[@worroSfOretsevraH]

GPU was detected, it definitely worth trying to change RAM's first.

[@S_G-]

VRAM power circuit also powers memory controller inside GPU chip. Its also damaged.

[@boogerhead0]

TI still sells those BQ24780 battery charger chips, so you don't have to use pulls. Mouser and Digikey both have them. Ha, Nvidia... I tried, they laughed. No way, won't sell to punks like us.

[@davianceable]

after all of these ı am asking myself why bother buyig a gaming laptop ,it is so pathetic design that burn a well gpu for a nothing.

[@sharedhardware]

ㅤ

[@tinkmarshino]

Find a kidney.!. your to much sometimes Sorin!

[@Lightinthedarkness1977]

Sorin..i don't understand this kind of people..why you are buying this kind a laptop for gaming??....to burnout???why??.....it's very expensive laptop and never may comapre with a desktop gaming computer...NEVER....why people buying this kind of laptop??...you will play games on the tree??...on the airplane??...on the train??...why??...what they think'in??...sorry for them...i'm a not gaming player..but my daughter it is...in fact it work in the graphic workstation pc...a desktop one for shure...i never buying this kind of laptops...never..for shure i will buying for my daughter a laptop for faculty but for now it is in the X class(10 class ending),but when her has to end this cycle os school (high school) i will buy one laptop for work-office...and for shure another desktop PC workstation.....sorry for my worse gramatical writing english ...have a nice day dear Sorin...

[@jurgenkruger3932]

Kidney 😅 Nvidia 🤮

[@Pihmusik-PiCh-Expert]