Macbook Air SSD not detected motherboard repair
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- Опубликовано: 16 авг 2021
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I always enjoy the smile after a repair. Everything is awesome!
I know right!
Like him customer
Super sir
totalmente de acuerdo, la sonrisa al acabar las reparaciones es el resumen del trabajo duro bien hecho
Ja dem kann ich nur zustimmen. Immer perfekte Arbeit 👍 💪🏼
You needed that time off, you work hard and deserve it.
yip, he really deserves it
Facts
Family is so important. Ive been away with my fam now for almost 7 mos to work overseas. All our hardworks is for our family’s future
Hope you and you family had a great time.
Thank you for the very prompt delivery. I am in Long Island NY. And it was here like your just the next town over.
Thank you to your dad and uncle as well.
Hope you have a great time with your family! I wanted to say that I LOVE how you get happy when you repair boards. I do the same stuff on car ECU's and I always feel the same excitement when I repair things. Great to have you on youtube and as a fellow technician. Respect!
it always amazes me how adding or removing 1 resistor fixes almost all the problems
Nice work Alex. Showing these videos shows that there is more than meets the eye with component level repairs.
Welcome back! We glad you had a nice time with your Family.
We missed your videos, but you need to take time and relax!
We appreciate all the hard work and intuitive videos what makes changes in our life!
Alex, thank you for all your content, I have been following you for a while, a silent follower. I must thank you very much, iv learnt so much from you and have recently repaired things for customers I would previously never have dreamt of, micro soldering repairs such as flex cable trace repair, remote control fob repair. Your content is amazing and extremely useful to people like us. Thank you again and please keep it up.
It's always great to see a paperweight come back to life. Looking back I wonder how many things I threw away that needed a tiny little resistor put back in place.
Thanks for the content!
Welcome back. Coming back to work after a vacation is always hard but getting that first fix is always making the work worth it. I always feel good when I fix something that was quite daunting, but the relief and satisfaction of the success always move me forward
Glad you got to take the kids on a trip. Your a good dad.
This is the most extreme fix i've seen in your channel, how did you manage to know that adding this resistor would fix the problem!! I really enjoy this masterpiece of efforts 👌
One of the best repairs from you, I love how much knowledge you need to fix Macbooks.
Welcome back Alex! Glad to hear you had a great time with your family.
I’m happy to see your uploads again and would wish you the best of luck managing your time to work on all the new devices that were mailed in.
Nice to see that its not always the replacement of a faulty component but the addition of one that solves the problem.
Glad you enjoyed the getaway.
Haha, this is what repair is all about.
the troubleshooting part got me into repair.
I understand plenty were a bit disoriented by what's going on, rewatch the video and pause to understand the thought process of fault-finding.
now when it comes to the repair:
something is pulling down the 3.3V SSD_Enable rail to 0.5-0.2V
now Alex notices there is a second path for 3.3V SSD_Enable and opened the gate of this closed path by adding the 100K resistor
Im confused. Isn't it the same line. Current will follow the path with lower resistance anyway.
@@jaycircuits same source not same line.
The best way to understand what's going on is to download schematics and boardview software it's freely available on the internet
Good luck.
@@mohsentabouna6401 Thank you Sir. Looking forward to learn more.
@@mohsentabouna6401 hello, am fairly new on the channel and am having problems obtaining schematics and board diagrams for mostly apple laptops, can you pls help me with a link or website where I can get both. Thanks in advance.
part of me wishes I had a job like this. it seems very rewarding
I'm in the same field... It is both rewarding as well as a bad headache
When u pray for rain u also have to deal with the mud.
@@idreess007 nice one
@@idreess007 rightly said
@@idreess007 sure beats cold hard machine work IMO
I love seeing the delight on your face when you find a simple answer to what could potentially have been a complex problem for anyone else.
What a great way of troubleshooting the issue...no other repair shop will do such kind of troubleshooting...hats off to you
Alex I always enjoy you videos. I was able to for your logic to find the problem, however in this case is not clear why you had to add an extra 100K resistor to enable the SSD power. I understand what it does, but was the cause of the problem?. Surely the 100K resistor did not run away by its own!.Why did it stop working?
Thanks and keep doing what you do
''something'' is pulling down the 3.3V SSD_Enable rail to 0.5-0.2V
now Alex notices there is a second path for 3.3V SSD_Enable and opened the gate of this closed path by adding the 100K resistor.
no the 100k was never there before, and your confusion comes from the fact that alex didn't "Fix'' the problem ofthe first path he instead forced 3.3_enable signal onto an other path
I don't understand the problem or the solution. I guess he's saying that the resistor was damaged in some way but don't we EXPECT a voltage drop across a resistor? Additionally, was the added resistor placed in parallel or in series with the allegedly damaged one? I suppose knowing what voltage level to expect for a valid enable signal helps....
He "stole" the 3.3v needed to activate the chip that send 3.3v to the ssd, I'm not sure about it maybe someone expert can explain that better
@@antbuch8699 the other 100k resistor was not damaged: he measured an was within tolerance
It was a nice logical chase for the problem, but indeed, if the resistor was good it seems to me it would still not work, maybe a trace problem... Anyway, it worked, and the valuable information here is the logical thinking.
Welcome back Alex.
Why the output of 2nd resistor is not being pulled down by the primary fault?
seems like both paths to 3.3v on ssd are not same
as I mentioned before,
same source voltage (3.3v), not the same line ( different states ).
The best way to understand what's going on is to download schematics and board view software it's freely available on the internet
Good luck.
It is because these two resistors (actually one resistor and other is a placeholder) use different 3.3 V to power SSD drive. You can find the schematics easily, just type 820-00165. Originally, on the motherboard was only R1696, and it used 3V3_S3 (3.3V in S3 state) to power SSD. R1620, which was omitted is supposed to use 3V3_S0 (3.3 V from S0 state). When Alex soldered R1620 on the board, this resistor provided 3.3V to power SSD but from S0 (working state of the laptop). So, the primary fault was not "large enough" to catch the source PP3V3_S0 (or better, this fault didn't prevent laptop to enter S0 state).
@@asv5769 but will it continue to deteriorate and cause a second failure?
@@tschupbach most likely not. If S0 fails, the laptop would not boot anymore.
Great to see you back on the job Alex. Hope you all had a great vacation. Thank you for another great video.
I’ve been trying to stay more positive like you always do. I gotta tell you, I am feeling better every day.
So happy to see you back and glad you took some time off to enjoy time with your family 👌 incredible video, this is by far one of my favorites. Keep up the good work 👏
Hope you had a nice time with the family. And its good to see you back can not wait to see more from you.
Welcome back Alex, you deserved that time with your family. Awesome work as always!
Welcome back! I've just seen this new video when i was starting to serving the first's *mates* (argentinian/south american infusion), the perfect time to watch to you in my free time!.
Greetings from Argentina!
In those videos worth for me only 1 thing to see Your smile and happiness once the job is done, I always wait for this moment......Makes me so happy!
This one was tricky. The way you narrowed down the issue was just pleasant to watch. Can't even imagine diagnosing this without a schematic. All the love from Turkey.
Welcome back , Thank you so much for your videos. You have a great talent and you are able to walk us through your repair process. Keep up the GREAT work !
Wow ... how important it is to have the product layout. How much easier your job is. I can't get enough of forgetting what you post ...... I wish you good health from Romania.
Glad to see you back even happier to hear that you and your family had great time
Welcome back Alex! Glad to hear that you had a great time with the family. Awesome video thanks for lesson.
I was about to call the store today to make sure you were ok lol. I know I don't know you, but your videos have been a huge inspiration for me. For that, I thank you kindly.
i love how youre so happy that you fix things , shows you really love fixing things
Family time is always important in life and in a relationship and good health. glad to see you back Alex, hope you and the family had a blast and good memories that will never forget. ;) wish you all the best to the next vacation to come in due time.
Great to have you back! Glad you got the time with your family.
Welcome back to the daily grind. Glad you and the family got some well deserved time off together.
Wonderful diagnostic with full energy after the holiday.
A well deserved welcome back Alex, let's get back to the good old lesson's.
I always like your videos before I even watch because I know I'm going to learn something new, your a legend at what you do.
Welcome Back Alex, its good to take time off with Family . am sure you came back re-energized ,great video!!!
Welcome back. Hope you enjoyed your holiday. We all need a break now and then when we work for our selves.
Welcome back.
hope you have rewarded yourself well and enjoyed time with family, you deserve a lot after a long work and sharing your knowledge with us.
Great to have you back Alex, I was having withdrawal symptoms, which is not good
Glad to have you back
nose to the grind stone straight away and their are always people that either won’t listen or think just because they are paying you that you cannot have time off
Great video 👍👍👍👍
Wow, the power of the schematic, well done.
I do hope Right To Repair catches on!
And welcome back
Nice work Alex, straight back into the saddle and knocking them units out for fun, keep smiling
Glad you and your family had a great time and also, great to have you back. :) Enjoyed the video
This one leaved my head scratching but after some comments I think that I understand better know. Great job as always
Glad you had fun, good to see you back!
Hope you and the family enjoyed your holiday. Videos as always better than factory.
Awesome to see you back. I hope the family enjoyed the vacation.
Happy to see at the end smiling after a fix.
Welcome back sir, I hope you had a wonderful moment with the kids
Welcome back. Great step by step. You’re an amazing teacher
I didn't know why the absence but I was praying that all was well. Happy to hear that you were doing something more rewarding than fixing everything that comes your way.
All your videos are amazing and the way you work is amazing. I follow all your videos and learn every day.🇩🇿🇩🇿
I always watch your videos in my “Morning Routine”, which is around 3:00 PM here, and missed your videos last week. As I’m watching it on my Smart TV I can’t see or write comments so I was unaware about your holiday. Sounds like you had a great time with your family and you’ve deserved it. I even think your holiday should be longer for all your hard work, but that will only the workload and stress as the “Mail-inn’s” keep piling up.
Glad to have you back though though!
Great to see you uploading now. Thanks. Glad you had a great time.
Excellent thinking.
Welcome back Alex. It is good to be back after having wonderful off days. You should do that every 3 or 6 months.
Finally Alex is home. I was happy when i saw the notification. Great to see you again. Thank you and as always "better than factory" brother
Nice to see you back. I following you from Glasgow, Scotland. Though this is not my profession but I love fixing things.
Welcome back. This video is a lot different to the videos you mostly upload. I love it when we learn using schematic to diagnose because sometimes that's the only way we can fix and yet I am seeing dislikes. I wonder what people wanna see on these videos.
Guess you done this type of thing a million times, good to see it still makes you smile when you win. 😊
The manual solving many issues
Good job 👏
I missed you last week
I hope you and your family enjoyed your trip.
Nice and great job done. That's the advantage in having all the data about a device. Together with your knowledge and experience it's possible to do some magic.
Sir how r u place can lm hlpay me
Good to see you back after a well deserved break for you and family.
Welcome back. I hope you relaxed a little bit from all the hard work you do.
Hope you had a good family time! Thanks for the video, great work :D
Finaly i am glad you come back. What an amazing quick fix, when you do it you make it look like its too easy. I hope to see more vids. GOD bless
good to see you back after a well-deserved break for you and your family.
Good to see you back Alex, hope you enjoyed the holiday.
Hope you enjoyed your vacation with your family.Good to be back 👋🏻
Glad you had a good break Alex. I used to worry all the time about taking time off when starting my support business, was worried about every potential new customer I may have missed and they gone elsewhere. Now I don't worry, I actually have the next 2 weeks off, most customers are happy to wait until come back and understand. Only this week a customer bought a laptop to me and the next day he dropped down dead! It reminds me that my son is always number one over everything, I have food and a roof over our heads so while I enjoy work, it is not all there is to life. Enjoy time while you can
the feeling when you fix something and it works is good and i love it when i see the reaction on your face
glad you finally took a vacation. Welcome back Alex.
Welcome back Alex! Hope you had a good time
Most important thing in this world is family. We are lucky if we are spending some time with family in between hectic schedule. This is the video i was waiting for a long. Great work and very knowledgeable. Thanks
welcome back sensei Alex...... you were missed, glad you had a great time with the family. 👍🏼
Another great video showing how good board diagram is and how much knowledge you have 👍🏻
That was a great and interesting fix, Alex…great job and thank you for sharing knowledge!
it is nice you are back and you enjoyed your holiday. Fantastic work Alex , I didn't think you could add resistor and fixed that way. I would never come up wit this solution. Regards out belgium
Ohhh alex i am happy, you are back. Hope you and your family had a lot of fun and everybody is healthy. You needed this, time with kids and family, recharge your batteries, relax and enjoy….everybody needs a break from life. and now back to work. There so much to do…really nice that you are back. I missed your excellent work and your explainings. Thx for that video, it was a very good one.
Good to see you back. Hope you had tons of fun.... another amazing informative video...
I wish I had more understanding about electronic components. Keep up the good job
Welcome Back Alex, hope you had a nice vacation. Awaiting for more repair vids!
Welcome back and appreciated your efforts.
Enjoyed watching the logical step-by-step troubleshooting!
Hope you guys had fun and welcome back
Good to see you back my friend, great job after a vacation it is satisfying enough👌
Good to see you back Alex, short vacation better than nothing, now back to the battlefield. 😉👍
Searched your videos everyday. I didnt saw your msg. Great to see you again. Need videos every day😎
Happy your back and I'm glad you had a good time.
Welcome back bro,
I fixed my Seagate 2tb hdd board issue with ur help, thanks a lot.....
Welcome back. Enjoyed the video a lot!
Welcome back! You make it look easy. :)
Congratulation Alex, you are doing the job very delicately, very precisely, like an expert and always "Better than factory"... 😊
Nice to see you again! Hope you have getting amazing rest!