MacBook Pro A1989 - no power, logic board repair. How a hard to be found fault looks like

[@repairstudio4940]

There is nothing that Sorin can't fix! He can fix all! 🎉❤

[@Timpano_Francesco_Repairs]

Very hard to find fault...good job Sorin thanks to learne a new one..

[@Alchemetica]

Most Interesting. I like the way you "think" out loud when diagnosing the problem. I realise if one is going to work on smc then a microscope is definitely required, at least at my age.

[@mihaiacer4395]

electronic God is alwais behing you. if it was me already start to diagnose a dead cpu. You make me love electronic mr Sorin, nice repair

[@wayne975]

😂Only Sorin, Jump starting a laptop. Thank you for sharing with us.

[@retrocomputinggrotto]

I watched a video the other day of someone repairing a laptop that had had a repair attempted by someone else who rushed the repair due to not wanting to charge the customer the correct amount so they tried to cut corners and do things quickly which back fired!! Less Speed More Haste as the saying goes 😎 As always, another great repair and good use of fault-finding skills 😊

[@DrTeddyMMM]

Awesome Job! ... The beauty through complication... Sorin, your skills at diagnosis are amazing. Thank you!

[@venerandarain3]

doesnt matter with your soldering job sir, You found the faulty Mosfet right there. thats the important thing.

[@8500gtNvidia]

Good job master! Nice hard job!

[@SatsaSatsa-fv4kp]

Greetings to you, my beloved teacher from Morocco

[@mahmoudsaid153]

Wow that was amazing sir

[@dreamspec1662]

Nice fix :)

[@christoffer6527]

Nice repair as always! 🎉

[@lucataszarek8782]

Hello🤝nice fix 👍👍👍👍👏👏👏👏👋👋👋👋👋

[@rahulmechatronics]

Master Sorin 👍👍👍

[@JayJay-ki4mi]

Excellent work! Ps. Metal tweezers by the battery connector is a recipe for disaster. I once slightly touched metal tweezers to an iPhone battery connecter to remove it and caused a short. Seen a puff of smoke. Thankfully it still worked.

[@warrenjagels5646]

Hi, nice work. I have the same problem. But I want to check how did you put power to the board to first start it up.. 9min into your video. Please explain in detail where u put your prong to inject the power..

[@behzadsaboonchi]

very Nice repair ❤👍👍👍👍👍

[@rudyschurmann6211]

it seems to be necessary to solder it very well in place. no? or maybe two solders are running through each other. or is this not possible?

[@Patecabraltica]

At 18:30, what's the name of the golden plastic film Sorin tapes over the board? Thanks for the video, BTW, very instructive.

[@Gonzi-ze1sk]

Kapton tape

[@Gonzi-ze1sk]

Kapton tape

[@jalalyn]

You are the best

[@HaTwingo]

good job 👍👍💕

[@ngwanindialphonse8447]

You are great.

[@johnmaloma7623]

Hi Sorin what is your fixed price for repair whether managed to fix or not?cos is prices are challenging as you said you may find a fault and we don't know after is going to work or not

[@rasclew3937]

wish you were in the US, id love for you to repair my HP Omen

[@pierrotlebatisseur9308]

What is the yellow plastic called and what is it called, also adding flux on the mosfet using same method would be cleaner? Also, when you check for short circuit to ground, are you using Ohm testing on the multimeter? Laslty, thank you for simply the best, most eloquent and least blabbering tutorials Sorin, 🎉❤

[@fonzothebeast]

DAS CRAZZZYYYY

[@lmwlmw4468]

Nice.

[@jamesbrowntown6800]

Sorin, did you have to pay for those schematics/models or can anyone find these somewhere online? Love your videos, keep up the good work!

[@electronicsrepairschool]

I got it for free searching on google, i believe it was on a forum, can't pay for the schematic, i'm loosing one day of my life every time i'm buying a schematic

[@warrenjagels5646]

​@@electronicsrepairschool I love your sense of humour.

[@emmanuelvalmas5648]

Hi Sorin. May I ask what do you mean when you say High Side MOSFET and Low Side MOSFET, how is it defined

[@ralphj4012]

Generally (not always) called high side when the mosfet is connecting a positive rail to something, called low side when the mosfet is connecting the something to 0V common or to something lower than the positive rail.

[@emmanuelvalmas5648]

@@ralphj4012 Thank you Ralph, it does make sense, what a great community to learn

[@ATAG-yn5pd]

I wonder what the thermal camera would have shown

[@kalmadolang3583]

Here in philippines is always price first before repair.. We talk first the contract before doing the job😮

[@laufey_fan9877]

Hi, My Lg gram 15z90Q is dead. I replaced battery and charger Stll not work can you give me a hint??

[@HikerBiker0]

if a customer ask for the price before fixing, always give a price for attempt repair which will be fixed all the time, then u will add other things

[@rogamingz206]

sorin you are my idol, can i work as an aprentice? hahahaha

[@CanukArgento]

charge a diagnostic fee than charge accordingly and if theres extras let the customer know ....

[@dontrotter1099]

so i have a 2015 macbook air that my grand daughter locked the harddrive with a password. shes 9. if i remove the soldered hardrive and replace it, will it reset the pw? i dont do macs, so i am totally lost. would really appreciate some help. thanks.

[@Aneesh.Asokan]

Most likely a yes, but it's a mac that's made by a company with an intention to make it difficult to repair by any one including apple!😢

[@johnstone5310]

Yes you can reset the password Boot into internet recovery Open cmd and reset the password or simple just wipe the drive

[@dontrotter1099]

@@johnstone5310 i need the hardisk pw to do anything. how do i boot into internet recovery? thanks

[@amritlohia8240]

@@dontrotter1099 Indeed, recovery mode isn't available when you have a disk password. Replacing the drive with a new one should allow you to get into the system.

[@4KPieEater]

Was the gate connected to ground through the coil, L8102 ?

[@electronicsrepairschool]

No, that it will show 54 ohms, the coil resistance to ground

[@mreaper2265]

@@electronicsrepairschool Must be that the low side mosfet was shorted drain to source and the high mfet was shorted source to gate but not source to drain.

[@stevejones4618]

Just tell them "less than a new Macbook" ;-)

[@abdelhakkerroumi]

I have a MSI KATANA GF66 11UG RTX3070 laptop. My problem is that the graphics card is limited to 45 watts and does not exceed that, which causes a lack of frames while playing.

[@vincentvalentine5900]

To disconnect the battery power of the macbbok, you just need to disconnect the battery flex cable not the big flat screw.

[@KremenariKatund]

Repair price?

[@vex9060]

Flat price for diagnostics if the customer refuses the repair. This is the solution.

[@1t729]

The customer is right, I'm Romanian and I've had the same problems with the prices and costs of a laptop repair. There are a lot of scammers here who charge a simple defect even ten times more than they should. Moreover, they use cheap Chinese chips for which you wait more than 3 weeks, while you can find the same components in Europe at slightly higher prices and the waiting and transport time is 2...5 days. This is for a much bigger profit. I was asked for 160 euros for a display cable that I bought from France for 100 euros with fast shipping, a 17.3 inch LCD display they asked for 200 euros and I bought it for 120 euros and so on ... In my case, they (3 local repair shops) ask for successive problems, one after the other, a lot of money compared to the price of a new laptop. This shows a lot of stupidity and greed on their part

[@leerzeichen1910]

ok, inteleg si punctul tau de vedere, dar trebuie si tu sa intelegi ca acele trei service-uri (si impreuna daca le-ai lua) nu le poti compara cu Sorin. de aceea, cand apelezi la cineva ca el sti din start ca mergi pe drumul bun. chiar si asa, a zis si el ca are pret fix pentru fiecare reparatie, deci ai fi stiut de la inceput; in plus, daca observi, dupa ce a diagnosticat problema, a luat legatura cu "clientul" - pt ai spune ce schimbari au intervenit, probabil, in privinta pretului. deci nu e ca "nu am stiut pana nu am dat banul..."

[@1t729]

@@leerzeichen1910 Ai inteles gresit .... Eu m-am referit strict la clientul din RO , il stiu pe Sorin , este PRO si s-a adaptat cerintelor si eticii vestice in schimb mentalitatea balcanica de a fura si insela il face pe roman sa sufle si in iaurt !!! Despre asta era vorba ! Mai este unul pe aici ( USA) care practica preturi imense si repara la norma doar ce poate si apoi posteaza cum si-a cumparat el casa de 1,2...1,4 mil de dolari Este imoral si stupid din partea unora .

[@orange11squares]

you think those repair services work for free, they have to pay rent, the workers, the bills, taxes, etc.... you can't repair something and ask 10 euro....or 20.... time is money and it's not only the money you pay for the part but also for searching the part, mounting the part, etc....

[@1t729]

@@orange11squares Read my post again ... I'm referring strictly to those scammers who try anything to rip off people trust them and they don't know anything about electronics . Between 4 repair shops only one deal with all repairs in a correct , proper mode with any client

[@leerzeichen1910]

@@orange11squares if you are good, then you can ask for your money -i'm fine with that-, but if you are "beginner" then i'm sorry, i can not pay your rent, workers and so on...and my device isn't fix at all

[@bibbidi_bobbidi_bacons]

👏🏻👏🏻☃️

[@airgeorge]

the Poirot of laptops 

[@TheBoooro]

You need to rest a lil bit big bear!

[@f1lab535]

LOL you use 1km of capton tape

[@gile849]

unnecessary waste of tape. :)

[@ralphj4012]

Which doesn't actually stop or reduce heat transfer.

[@Dohcoms]

Wow, Exceptional faultfinding, 0.1V difference at resisitor, floating gate, LOL

[@weerobot]

MacBooks look Fun..lol

[@SidneyCritic]

Apple guys are always going to ask for a price because they've been to Apple and got a $2K quote - lol -.

[@jaym5938]

Still makes no sense having 'great hardware' that cannot be repaired. Nice job showing the world how sad Apple is for not being able to repair their own products.

[@chasingcapsaicin]

rohs strikes again

[@Electricworld-1]

I🎉

[@c1q3]

google repairs !

[@Pihmusik-PiCh-Expert]