Macbook Pro 4v on PPBUS G3H how to repair common logic board failure
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- čas přidán 19. 10. 2020
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Everyone has one of those days. I hope you are able to work through whatever it is that has got you down! Stay safe!
The only man who never makes any mistakes is the man that never tried in the first place!! 😇
@@anngenthe6287 I'm glad you're testifying,I'm about upgrading my deal with him.
You're one of the few people I know that are so good at what they do that I'm scared to approach the subject at all around them
Louis you are an inspiration to millions. So true about the grieving process. Thanks for always powering through. 💪Thanks for always teaching us. This is invaluable.
Hey Loius, random old dude from somewhere else here. Not in the tech industry, but I learn from you every time you post a vid.
I don't know you, but I can sympathize with your current mood. Hang in there, you will get through it.
Your dedication to persevere is an inspiration to us all, hope you and your business keep thriving. Thanks for making these videos. Enjoy watching and learning in the process
I hope you feel fine bruh , I actually appreciate every single second you care to share with us about your work , I forced myself to keep learning from your 2015's videos , its enough to make anyone understand logic board very easy
I really appreciate your efforts that you do for other people who cares about repair .. thank you louis
Louis, you influenced me to start my first non-freelance business and not back out on it, like I have so many ideas. I'm a creative person, so I tend to have many ideas and never actually follow through with them to their max potential because they get replaced by newer, "better" ideas. But your videos have helped me focus efforts and actually focus fire on a single idea and put something out in the world. Thank you
I love watching you work. I used to do board-level repair believe it or not on IBM compatibles XT, AT, starting in about early 90s then I have prices came down I just went to board swapping and selling new computers
Miss your board repair videos....Hope you can get back to doing more sometime soon!
Hey man I feel that. Had that happen on my first test in college. Was a real slap in the face. all I can do now is learn from that mistake and make it a learning experience
Think most of us have been there Louis. Pick yourself up brush yourself down and carry on my friend. 👍
We've all been there mate. Sometimes you just don't see what's right in front of you. Not seeing the woods for the trees. Happens to us all. Keep the head up. 👍
Welcome to the club. It happens to everyone, and more than once. If it’s any consolation, think of your office family and/or internet family. Most of us are here for you. That’s a lot people!
hope better days are ahead. thank you for your video today.
“This too will pass”
I hope you have a better day tomorrow. Thank you for posting video for us in spite of feeling like crap. Take care brother
Lol, I fixed one this morning, and now Louis do a video... Anyway thanks for everything
My favourite word FAIL !
F First
A attempt
I in
L learning . 👌
Respect to you Louis. I admire your wonderfulle work. Electronic is more logic and deduction than hand working. I wish to be able to think as quick as you do but at least i do understand your logic because i'm a technician too. I fix amplifiers, ps3, ps4, all kinds of electronic boards, laptop and more. I can't be as fast as you thinking cause i'm 62 now but i use to be when i was your age. For me you're more than a good technician. You are very competent and yes, you are a good guy but take my advise: Don't be too good with people cause i've learn a lot about people and they will take advantage of you...........most of them. Keep up your good work. Excuise my english. It's my second language. Take care men.
Hey! I'm not "some random person"! I'm on meds for that!
Haven't owned a crapple product in years and I also almost NEVER subscribed. But you, my good sir, are doing God's work!
It's cool how you use the surface tension of the solder to sort of self-align the chip resistors and even the power controller QFN...
Louis, we all make mistakes. How you deal with it will be up to you. I have no doubt that there are those around that you can trust and confide in. Blue Skies makes a magnificent point below: You are an inspiration to MILLIONS. We have your back, and we will send any and all prayers (and karma) your way. Take care of yourself, trust those who know you best. Most of all, please, don't give up. You'll make it. God Bless.
excellent video as usual thank you
PPBUS G3Hot is Louis' favorite!
I love to see the ultrasonic cleaning process 🙌🙌🙌
I had a no green light yesterday it was the smc all power rails were here 3,42 /ppbus /rtc / not every time one wire :)
One thing i've learnt from this channel is when you fuck up you own it then find a way to make it right!
9:51 .. rack 'em and stack 'em. Well played, sir!
I hope you have someone close that you can share your problem with bud, you need to let it out whatever it is. Lighten the load man.
I'm sorry for whatever may be troubling you, hope it works out well in the end.
Oh, I remember this problem from one of your videos :D
They could have fixed the problem of destroying the chip by using bigger resistors than 10 ohm (eg 1k) :/
These 2 resistors are supposed to protect the input of driver XD
Of course by using bigger resistor the filter capacitor between the resistors needs to be lowered or the current protection response will be 100x slower (in case of 10-1k resistor chamge).
We love u louis
yep this is my week too.
Never knew, now I do.
8:00 ... it's called a "buck" converter.. in is generally higher than out.
Hey, I hope you don’t kind me asking, but you seem real smart with Apple tech, is there a way to fix my phone? It is disabled for 43 years (about)
Which software do you use to view the schematic parts on the motherboard?
Whats the percentage of boards one cant repair because of cpu or gpu killed by high voltage from dead switching regulator ?
Don't worry, we're all idiots in the end ;)
Hi Louis and guys, I'm not sure if i can post about this here but I have an issue with my Mid 2012 Macbook Pro (A1286) that i cannot seem to fix.
The Macbook does not power on from the power button with the charger or without, however when i disconnect the battery and then plug in the charger, the Macbook starts automatically without the power button.
I have tried disconnecting all hardware besides the DC board and the fans from the motherboard to see if its a hardware or cable issue but the problem persists.
This is my daily work laptop so i cannot afford for it to sit at a technician for days.
Is there any solution to this problem i could do myself ?
ُُElegant job
No Light on charger/No power A1398 Mid 2012 - Early 2013 15" Macbook Pro Retina 820-3332
PP_3V42 = 3.42V
PPBUS_G3HOT = 4.00V
Visual inspection shows current sense resistors R7021/R7022 have burnt out.
U7000 (Part # ISL6259) the charge controller chip has failed, and is shorted to ground. This is why R7021/7022 burnt out.
Replace U7000/R7021/R7022
Measure current sense resistors, now 20 ohms as it should be.
Power up.
Measure 18V on CHGR_IN, on components C7005 and R7005
Measure PPBUS_G3H, now 18.59V. This is good and means the SMC is on and working. If PPBUS_G3H was 18.23V that means the SMC is not on.
Re-examine the one wire circuit.
Measure ADAPTER_SENSE on pin 5 of U6900, measures 0.735V, if DCIN board is good this should be 3V.
Measure SYS_ONEWIRE on pin 4 of U6900, measures 0.787V, if DCIN board is good this should be ~3V.
Replace DCIN board.
Both ADAPTER_SENSE and SYS_ONEWIRE measure correctly now, DCIN board was bad.
Machine is now fixed.
ALL of this damage was cause by a bad charger!
Because this is a Mid 2012 - Early 2013 machine, reflow U8900 so it doesn't come back in a week crashing.
Ah, the legend, the myth, the PPBUS G3H!
Don’t feel like an idiot, everyone has bad days, especially whenever your nonstop repairing and getting stressed.
"Realizing that your an Idiot is just something you have to Grieve"! AMEN TO THAT BROTHER! lol . Today I was just that. and I call myself a professional. SAD!
Dude, I've said it before, I will say it again. I learn more about troubleshooting from watching your videos that I ever learned in school. The fact that you know you made a stupid decision means you aren't stupid. Stupid people don't know they are stupid, hence why they never seem to learn. It's the Dunning-Kreuger effect.
Louis please hack the iMac into external monitor.
Louis, why not let your employees like Paul and Steve make some streams? It's been a while!
Oh man you sound so sad, from the very first seconds of the video... Hope you are ok, fingers crossed!
You need to talk to Nick Rekieta and talk to him about getting on his stream
Don’t be too hard on yourself Louis. We all make mistakes buying Apple products every once in a while.
damn you sound super bummed, hope everything works out
Why do I see Darth Vader's mask melting in the thumbnail?
Hindsight, good god if I had a dollar for every stupid thing I've done. As long as you learn something from past actions then even if they were detrimental it's part of the learning curve. 🙂
Were not stranger's here Louis..😆
I think the word you were looking for was tenacity.
join the club of life
I play with my PPBUS every night
Oh dear he really used the proper amount of flux... He's clearly in a bad situation... :(
Everyone has those "am I really this dumb?" Moments, I suppose it's not comparable because of your voice, but recently I found out the motherboard of my pc was faulty from factory, and I should have noticed that since day one, not a year in, now I can't use my desktop until the rma process is complete, also I found a failure in my monitor, and things like that, and I am really questioning my intelligence right now, I am an electronics engineer student, how I didn't noticed the evidence, the first thing i thought it was ram issues because one ram did work, but it was like, it worked once after putting it like 10 times, so it might be a problem with the connections of the motherboard to the ram.
We really are in recession! Louis is using the required amount of flux!
The dislikes are from Apple employees
Omg Louis you gave your credit card info to one of those inda tech support scammers didn't you? 🤦♂️🤦♂️
The right amount of flux is a metric fuk ton?
I always go for about a thousand micropauls.
Please tell me the dumb thing doesn’t involve that adorable GF of yours. Because you two are my favorite couple... for real.
You are full of love, you'll be more than alright soon..
Lewis...you sound really tired...you've done more than your share of teaching us and educating us about board repair..take time some off perhaps ...to fix that which has shorted out in your life.
Once again, no CC.
it sounds like you went to the dentist and had a tooth pulled and you're still kinda under the influence of the anesthesia. That of the microphone was a bit too close to your mouth, either way as always very informative. :)
Knowing that we are stupid is the first sign of intelligence. Hang in there...
i really hope it is not erica i like her and you
No cat videos?
Second .. for the first time YaaaY ! Keep up the good work 👏
This has been a tough year for most of the population. I like to remember that ubiquitous truth: "This too shall pass."
There is always some disappointment, some failure, some blindness and there is also always the return of the light.
Giving up is for nihilists. You are aware enough to NOT become one of them.
Hehe... pp bus... Hehe
Seriously what’s up with PPBUS. ITS ALWAYS PPBUS!!!!
Bro plz take some of this self esteem because I'm not using it and you seem like you could use it
Don’t worry Louis she was an Apple user it just wasn’t meant to be
Hmm... may be right to repair is wrong after all. What if my laptop is found in a repair shop in Delaware containing compromising e-mails that I forgot to delete? A very likely scenario, isn't it? Law should protect citizens against their own errors, therefore better not try to have laptops repaired. Especially in Delaware. Buy new ones instead.
Interesting that you think you're not intelligent Louis. I didn't get that vibe at all. You seem to have really strong philosophical / right brain / inductive reasoning type intelligence. Plus you're a master of board repair which seems quite logical / left brain / deductive reasoning. Seems like you're quite well rounded with your intelligence.
Maybe it took you longer to learn it than to teach it because you had to blaze the trail through trial and error. I imagine reverse engineering all this electrical engineering stuff without Apple's cooperation and without being an electrical engineer was not an easy process.
I was looking for eyes. You're not really a failure until you become a cosmic failure.
Never can be more idiot than those who ruin the life of The genious we can all thank for our computer world : "They formed a new utility company, abandoning Tesla's company and leaving the inventor penniless. Tesla even lost control of the patents he had generated, since he had assigned them to the company in exchange for stock. He had to work at various electrical repair jobs and as a ditch digger for $2 per day. "
Your lack of intelligence fills you with determination!
Did your girlfriend dump you or something
Just say you're sorry.