iPhone 13 Pro Max No Power after Back Glass Repair. How To Repair Cracked BBPMU!
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- Опубликовано: 7 апр 2024
- This iPhone came into my shop after another repair shop completed a back glass repair. The phone came into their shop fully functional, but just had a cracked back glass. The other shop used a glass breaking tool to make the glass removal easier. Sadly, this resulted with a VDD MAIN Short within BBPMU, which caused it not to turn on anymore.
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This video walks through the process of diagnosing the fault using a DC Power Supply to check current draw before prompt to boot. We found we had a 2.5A draw before prompt to boot.
I also show how to inject voltage into VDD MAIN using multimeter probes.
As well as how to measure for shorts using Diode Mode.
Once we found the issue, we used a heating platform to separate the 2 layer motherboard sandwich to find the Baseband PMU was cracked. This is fairly common on iPhone 12 and newer.
Using a grinding pen, I show how to grind away some of the underfilled IC chip, so it can easier to remove without disturbing the surrounding components.
Then we replace the BBPMU and now the phone boots up… but No Service/Baseband issue.
After I finished filming the video, I continued to work on this case & was able to fully fix the cellular issue & the customer got back a fully working iPhone 13 Pro Max with 5G full bars & everything functional.
Here are more pics of the final results of this phone in working condition: vccboardrepairs.locals.com/po...
Let me know what you learned in the comments below!!
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After you watch the video, read about how I fixed it here: vccboardrepairs.locals.com/post/5489011/iphone-13-pro-max-no-power-after-back-glass-repair-final-results
I love long videos, it will help me learn more.
Love all the details and the time you take to explain everything. My shops been around since 2010❤
Wow, thank you!
thank you jesse for your kindness sharing knowledge you are generous
My pleasure!
Amazing, it's incredible your ability to explain and i the mean time repair the circuit
🙏🙏
shiny solder balls - You already know short form is better for clicks, long form is better for us techs to watch everything. 3-zone VDD_Main, shorted BB PMU, grinding off instead of trying to heat it off. Its a long video but so much more informative. Thank you for teaching us
Love it! Someone is paying attention 💡
We are watching of course
I watched the full video thanks buddy
Thank you! Appreciate the support!
Bonjour de France merci pour la vidéo bonne journée
Merci d'avoir regardé ma vidéo
Had too many bad experiences with the laser, before i got it i did housing for like 3-4 years. I dont regret the experience because now i do 98% housing and its so much better. Laser is so messy and so much risk. Not to mention the phone isnt as water resistant i think its even more prone to water
Housing swaps definitely seem like a better option
Hi..can i ask where did you buy your power cable with power button and amperes?thanks
The DT880 is no longer available
Hour and 15 min in the video 🙏🏽 i also run my own business from home for 5 years now. Although one day i want to learn soldering for sure. I can relate to alot of what you said. Im wondering if it would be possible to be able to get some training from you maybe video chat or personally fly out ?
I'm actually the lead soldering coach in the Profixerr Course. it's a 30 day mentorship program where we teach you how to solder and diagnose logic boards and help you implement it into your shop as a profitable service.
You can sign up here: www.vccboardrepairs.com/solder-course
1…….great watch as well.
can i know where to Buy that DT880 Mini DC Power Supply bro? Thanks
Not available anymore
Nice video sir,what is the temperature of preheater when removing bbpmu??
I show in the video sir
Ooh Thanks Sir
What can I do I have an iPhone 8 of a client has pentlobe screw is stiped what can I do
I don't know? Drill it out or something
Shiny solder balls
Full video are useful but for marketing short video are good but I like full video it has way more value to it
Awesome! Thanks @themagamer7289
What function NAND in iPhone 12 and 13
It stores data
Thanks but what data
Jesse you could also grind the top layer of the bbpmu just a little bit then come in with a soldering iron max temp a bit of solder blob and wick then pull it out with a hooked blade
Yea of course. I just show the technique i prefer, but you can modify the technique if you'd like
Boss I can fine that power supply DT880 can I buy from your side so you can send to me in nigeria by DHL
No, it's not available
1..
The problem for me is to diagnose when the short is not in vcc main
Watch more of my videos. I cover all different scenarios
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Appreciate it! Thank you so much
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1
By the way I used your method on Android CPU it works great for me
Glad to hear that!
shiny solder balls 😅
Awesome! Thanks @vitostrong1976
👌👌🤝🤝🤝
Thank you! Appreciate the support!
1
1
Thank you! Appreciate the support!