iPad pro 12.9 No Power Tricky Repair - Finding Short Circuit by Voltage Injection & thermal camera
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- Опубліковано 2 жов 2024
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I'm guessing the reason why injecting voltage before or after the coil makes it difference is because the coil can take the load. Very informative video Thank you so much.
A coil is basically a very thin wire, and the part that gets hot is always the component with the highest resistance. So if the short on the capacitor is really low resistance, the coil might be higher resistance and thus taking most of the power that is being injected. Injecting after the coil means the coil is no longer part of the circuit and the component with highest resistance is now the shorted cap
Yes, I believe it too because the short is not so "strong" so the coil resistance would absorb the heat.
Science people increase the volume 😎
@@baghdadiabdellatif1581 What?
Only an expert like you Alex,can repair such complicated problem.Very well done.
One of the trickiest things for me in those repairs is to know where to inject voltage. That's why you need experience. The thermal camera is a K9 but you need and one trained officer to complete the job. Well done!
visual inspection is one of the key to success
The knowledge you share is priceless! Thanks for the videos!
Good job Alex. Always learn something new. Thank you, and keep up the good work
Me: Mechanical engineer working in IT sector and watching electronic circuitry videos, interesting
Never mind. I've been graduated as a Civil Engineer 29 years ago and I'm watching these repair videos everyday.
I really enjoy watching your videos and it inspires me. I've been doing easy repairs since I was 12 years old but now that I'm 18 I was looking for something challenging and came across this channel. I went to your first video and have now seen all your videos which has inspired me to be able to do this too. so I'm now waiting for my stuff to be delivered so I can practice it too. I guess I'm not the only one and want to thank you for that.
Sincerely, Bjorn Schelfhorst
(sorry, but my english is not my best)
Awesome learned a lot. Thank you.
awesome work . thank you for sharing
The knowledge you share is priceless! Thanks
amazing experiment
My wife asks me why I watch your videos when I'm never going to do electronics repairs (I'm in IT, BTW). I just find your videos very interesting.
Haha, same here 😂
احسنت بارك الله فيك
Superman saves the world and Alex saves electronics with Superman T-shirt
Another successful repair story, bravo Alex, thanks for sharing.👏🌹
Great repair man!
Alex = Encyclopedia of Electronic Repairs... 👍👍👍👍
I really enjoy the insight and methodology you use to find the exact component to replace. :)
Thank you so much I received my items very fast and quick at least I have a voltage injection now let go and get the tiger 🐅
I have a question. Is it okay to let the capacitor unreplaced with a new one? I mean, there's no caps there after removing it, but does everything works fine even without it?
It's gonna work fine. There is optional capacitors to that can take over the functions of the removed one. Redundancy. If one fails then another one can take over
bypass caps, it's okay if you remove one, there's plenty on board
No. It's not. While I agree with others on the bypass redundancy part where the absense of one cap will not cause the device to stop working, you have to understand that the capacitor at that location is there for some purpose. If it's presense or absense doesn't make a difference, manufacturer would have done without it.
@@Wingedmechanic They are very important as they acts as a kind of energy reservoir. If the input voltage drops, then a capacitor will be able to provide enough power to an IC to keep the voltage stable. Otherwise, the IC could end up in the unstable state.
Great work!
When it comes to ipads and iphones I rarely ever see you not finding the fault! Awesome job
Did you replace back the capacitor ?
Woah! Nicely done.
Super Alex! He's wearing a superman shirt. 💗
Another great lesson using voltage injection and a thermal cam. Thank you showing the how, what & why. Always learning. Grateful for you sharing your experience.
ما بعرف ليش حاسس انك عربي وانك فلسطيني كمان but anyways i like your work u did great work all the time work better than factory
awesome!!! finding a short is very hard but you find it very easy with the right tools hope i have the right tools for my job. thank you for sharing sir.
Awesome ✌🏻✌🏻✌🏻
When will you fix your thermal camera stand🤔🤔🤔
Does FLIR phone can pinpoint exactly like your thermal cam does?
“Don’t test boards when they’re hot” got it! Can’t believe that actually makes a difference and causes a short wow lol
I need help about old "Early 2009 24 A1225 Imac" Display! Can i replace a LM240WU2(SL)(B4) with another LM240WU2(SL)(B2) Display? Could someone help me please?
Would this be the same with a samsung note 9 a problem on the board , because the battery is not connected and it's getting 0.02 then 0.05 on the amp meter or could this be a charging port problem
Good job!! but this time you did not SAVE THE WORLD FROM COMPLAINTS by also replacing the cap LOL
You fixed it just by removing the cap ?
Yes
you should use rosin smoke.
are you testing display card on motherboard? or you have specific device for testing.
Can you explain why you are using 1.1 volts for testing. Why not 1.5 volts for example?
Alex You're seeing 0.1 Amp consumption due to the white meter. It's not the tab consuming 0.1 Amp itsrgp
you fixed my tablet thanks
Good luck for you
Very interesting and informative video. So usefull. You are the best alex.
Thank you for the video
you did it again !!! i'm not talking about fixing the problem ... i'm talking about not replacing that bad capacitor ... the world gonna end because of that hhhh :d
Can you make a more detailed video about how to inject voltage. I wanna know things like: how do I know where to inject and how to know how much voltage to inject.... Thx!
Third hand, I have heard this before. I am looking for one LOL. Pleasure to watch.
تشخيص جيد للمشكلة ، استمر ✔️
This is awesome video clip. I love it because I've learned from video how to diagnose. Thank you much for sharing.
wow it can work without the cap.... think of the amount of money Apple can save by removing all those caps that are not required.
And now its ofcourse better than factory because it was broken 😅😅
Good job 👍👍👍
Learnt Something new today . Dont measure capacitors while they are hot👍🏼
I like the happiness on face when you fix your job love from India..
You don’t have a third hand but given some of the repairs iv seen you do, you defiantly have a big third leg! Lol! Keep up the good work!
Super useful to show tracing the actual bad component versus the bait. I would have been focusing on the diode in error.
Do you exclusively recommend aluminum tape over capton tape? I ask because I notice you only carry aluminum tape in your store.
I laughed when you showed what the customer sent versus what they included in their comments. Ipads are not cheap devices so they haphazardly sent you two of them and a screen and didn't even mention it. If they care enough about them to want a repair, why didn't they explain what the hell they shipped? Makes no sense. I only sent one device (hoping we see it here someday) but I included a whole sheet of notes. I try to put myself in the shoes of someone who has just opened the box and has no idea what the device needs. Why not try to help? I might be wrong. But I can try.
I suggest you when when you inject voltage, do it in a way you inject higher voltage but less amperage.The high amperage is that one that can do damage so i sugesst you not go with amperage higher than 2 amp. And mostly mosfets and diodes open when they get more than 2 volts, 1 volt wont open them
good video alex, you would have tried rosin for technicians who do not have the budget to buy a thermal camera, to see if that type of tool really works, best regards and blessings
I want asking one question master, when we put alcohol to those capacitor. How to know that capacitor you remove is short to ground ?
Thanks for the video , very nice to share your experience with us ! God bless you 🕊
Great work my dude . Thank you it is amazing
Even his glove saus 👍. His thump just had to pop out for solving this puzzle.
Hi Sir I am from India
can you do one video like this without thermalcam please
Your t shirts should say better than factory on the back and consider it fixed on the front great video 👍👍👍
Still wonder how a little capacitor can make a whole tablet not to work... Crazy
I know for a fact that you change the caps after the video is done just to save the world from complaints 🤣
There is an awful lot of shorted surface mount capacitors on this channel. Are they even less reliable than electrolytics?
Hello always watching and support to your channel....
Great video, but I wonder if those are ebay refurb+stolen ipads to have them without screens and a broken one at that.
The question is why did you get the short just after the soldering? After cooling down there was no short.
That was a tough task , experience played a big role in fixing the tablet
why Alex you don't assume that battery is defected for some reason?
Lesson of the day : Never measure caps while it is hot.
Termal camera make life easygoing.😊👍👍👍
*awesome tip "don't test for shorting on heated board" thankyou sir for this tip*
Masta, what is the safe value of voltage and amp for injection?
it was interesting to see how you skipped false indication that diode is shorted and found shorted cap at different place of board, well done
No third hand ? why?? Great fix! Thank you for share.
Today's Lesson: never take measurements when the board is hot😌
i always use alcohol to detect short
because i have no thermal cam😁😂😂
They put so many caps in those so they can go bad and people have to buy another tablet…imagine that
Nice process to find the shorted component, thanks for teaching us
Customer sent you two iPads in case you fixed one and got bored?
U r like a teacher for me I Lorne so many things from Ur videos tnx
I didn't know that α coil couldn't get shorted
Hadn't you have a tripod for the thermal camera in one of your video ?
We learned when the board is hot we can't measure components.
Nice job we are learning to much with you think you 😉
You need microscope with thermal image option.
You forgot to save the world from complaints.
Really thanks for sharing your knowledge
UA-cam movies is playing “The Legend of Bruce Lee. 2 hours and minutes into the movie, they mention the Movie “Big Boss”.
I just wanted to let you know.
Greetings from New York
That's where the Big boss name came from. ua-cam.com/channels/LaXgfNlVxY149shiA1pykQ.htmlcommunity?lb=Ugwi2ApjAg6wLmi7F-t4AaABCQ
my favorite UA-cam channel
I would hate to try and fix anything apple 😅🍎
Good job, congratulations! ;-)
I start to think they make this cap in a special way to burn.
👍😀👍
Great video very skilled work 👏🙂
ok....so u took out cap and thats it left like that no replace? not cool still
What is the relation between heat and multimeter showing short
Super great video and thank you so much
E bravo ad alexuccio! Complimenti ! Bel lavoro