The reason this fails is the feedback circuit and the lack of resistance on the pground pads. If the 1v feedback is missing then the smps5 output rises to Vdd main voltage . The ground jumper is to prevent the feedback loop from failing and bbpmu sending the output of >4v down a 1v0 line eventally blowing the modem.
Yes. That’s why I mention not every ground is useless and it’s a prevention. About the Pgnd u said I already cut it out due video I explain it too long. Nice quality comment. This comment will be pinned. 👍🏻
By the way, due of that flaw, the damage can be different. Sometimes it lead to us believe this is one of the reason why they started to take Intel Baseband only in certain models. XS 😂
Hi, I did a detailed write up on this a few years back on my blog illustrating the fault condition , solution and mitigation. Great videos btw, keep it up. Its refreshing to see methodology and working conditions being taught in your videos. Regards Dee
@@DeeGee Cool. Love to see someone helping the community especially Apple keep bullying 3rd party repair. Mind post ur blog link here? I'll check the spam comment box to approve it. Wish you stay healthy for this time being.
You are the only youtuber who explain things in a cohesive and efficient way very rare in this industry and I'm learning a lot from just watching you and explaining how things are done. 100/10 sir, greetings all the way from the Philippines 👏
What I realized in your presentation is a different solution. I have learned a lot from watching your videos. I have never seen anyone on youtube who offers a solution like you. Congratulations and stay with you From srilanka 🇱🇰🇱🇰
Pls lim i would love to undergo ur onlime trainning to understand ur SOPs how do i go abt it. U helped me solve a backlight issue following ur SOP. I did try based on my knowledege but afyer watching ur video i solves the problem. So pls whats it gonna cost and how do i go abt it.????
Thanks again lim for sharing actually I not understand why you but resistance 2.2 between capacitor it’s same voltage you are my master lim big van from Kuwait 🇰🇼
I think he did it for protection. -if the value of resistor is more close to zero then partial-short after that resistor can heat it too much and beak it or that source line where that resistor is connected can be pulled down with that partial short. So for protection he used high resistance, so even when the ic will do a full-dead-short then it will not affect the source line (on capacitor) because of that resistor and higher resistance.
im new to your channel, and exactly what my iPhone 6+ problem. no imei showing. because of your video i do understand whatis the problem of my phone. keep on sharing.
I didn't understand, in the video you show that even if there is a short you have 1V stable on the capacitor. Why spin on another power supply? If you do it is because the low impedance makes you sit pp_1v0_smps but in the video it remains stable. thanks for your videos
very well said sir ive learn a lot of things b watching ur videos u gave as hope for us newbie to explore things in easy way i love the way u delivered ur teaching its easy to understand u deserve a million subcribe
Thanks for your informations i have been looking for explanation for long time especially this case iphone 7 QCOM version thank you for this video you’re a genius 👍👍
Thank you so much for the information ill do it with this video when i have the same issue because my iphone 7 unable to activate was overheating so bad idk why but yeah i will try this info ❤
This is the first video I've watched on your channel, I'm amazed by your approach, very informative,but yet simple,where can I sign up to be a student,?senséí🙏!!
Do u offer online trainning/ i want to improve my troubleshooting skills and i have been following ur SOP for a while and ur technics are great. So do u offer training im in Nigeria and what the cost
Hai sir. Just asking.. how about the pp_0v95_LDO4 is short. 0.00 ohm. What is the solution? Can use yours or need to reball the cpubb. It was pleasure to have your answer sir. Thanks
Hi please have got a iPhone 7 Qualcomm,unable to activate this two lines is shorting BBPMU_TO_PMU_AMUX1 and PP_1V0_LD09 though I removed the BBPMU_RF and read again it’s still shorted any solution
Wow it's amazing, good job Mr. Thanks for the solutions 👍. I'm new subscriber, any friend suggest to watch your channel, so it's live to watching and then wow amazing tutorial. Thanks a lot again 👍
Hello, i have no signal issue on ip7, but it shows emai and modem firmware in settings, but nothing with *#06#... I've tried factory reset, flashing and still the same. What could be bad in baseband cpu?
Dear Engineer i try to do the jamper with 2.2 k oms resistance in many 7/7p QCOM and they all short in the same line but the problem for all of them same no baseband,no reading and No actives
Hi I’m from Philippines, I also have that same problem, i cant find any phone repair shop that can fix my iphone baseband problem but I’m not sure already because i tried to activate my iphone 7 using my WiFi but it doesn’t work and I didn’t tried to activate it using pc or mac, if ever that it won’t work, can you repair my iphone also? If ever, how can i contact you?
I think I should make one video abt it. Tools require is just one thing.. most importantly is do not buy the tool that not suitable. That’s why I think I’ll talk about power supply, multimeter...
What if instead of using jumper we had the short capacitor replaced with the exactly the dame capacitor that was causing problem and next time if user would flash again he could do so like normal phone does
The reason this fails is the feedback circuit and the lack of resistance on the pground pads. If the 1v feedback is missing then the smps5 output rises to Vdd main voltage . The ground jumper is to prevent the feedback loop from failing and bbpmu sending the output of >4v down a 1v0 line eventally blowing the modem.
Yes. That’s why I mention not every ground is useless and it’s a prevention. About the Pgnd u said I already cut it out due video I explain it too long.
Nice quality comment. This comment will be pinned. 👍🏻
By the way, due of that flaw, the damage can be different.
Sometimes it lead to us believe this is one of the reason why they started to take Intel Baseband only in certain models. XS 😂
Hi, I did a detailed write up on this a few years back on my blog illustrating the fault condition , solution and mitigation. Great videos btw, keep it up.
Its refreshing to see methodology and working conditions being taught in your videos.
Regards Dee
@@DeeGee Cool. Love to see someone helping the community especially Apple keep bullying 3rd party repair.
Mind post ur blog link here? I'll check the spam comment box to approve it.
Wish you stay healthy for this time being.
@@DeeGee can i get link of your blog, please?
You are the only youtuber who explain things in a cohesive and efficient way very rare in this industry and I'm learning a lot from just watching you and explaining how things are done. 100/10 sir, greetings all the way from the Philippines 👏
My friend you have the ability to teach students because your very good with this job! Bravo
What I realized in your presentation is a different solution. I have learned a lot from watching your videos. I have never seen anyone on youtube who offers a solution like you. Congratulations and stay with you
From srilanka 🇱🇰🇱🇰
I like how easy you describe this. It comes with a lot of experience. Good job.
He is genius becoz mobile technician will understand
Nice job. Unfortunately in my experience this doesn’t always work, but can save some of them if not too completely shorted
I like the way you deliver speech and most amazing with lyrics and descriptions, thanks go on👍👍
Amazing as always... your SOP’s always help me alot... u r great Sir
Thanks for the sharing master Lim!
تم إضافة الترجمة العربية إلى الفيديو من قبلي
Pls lim i would love to undergo ur onlime trainning to understand ur SOPs how do i go abt it. U helped me solve a backlight issue following ur SOP. I did try based on my knowledege but afyer watching ur video i solves the problem. So pls whats it gonna cost and how do i go abt it.????
Hello from Philippines 🇵🇭 Lockdown.
Thanks again lim for sharing actually I not understand why you but resistance 2.2 between capacitor it’s same voltage you are my master lim big van from Kuwait 🇰🇼
I think he did it for protection. -if the value of resistor is more close to zero then partial-short after that resistor can heat it too much and beak it or that source line where that resistor is connected can be pulled down with that partial short. So for protection he used high resistance, so even when the ic will do a full-dead-short then it will not affect the source line (on capacitor) because of that resistor and higher resistance.
@@Radek__ why didnt he replace the short capcitor instead
outstanding explain and research about the problem ....mind blowing sir god bless you
obrigado por nos passar seu conhecimento ... voce esta de parabens from BRASIL
Basically what you did is bashing Rewa face. lol
Thank you. Love your channel
im new to your channel, and exactly what my iPhone 6+ problem. no imei showing. because of your video i do understand whatis the problem of my phone. keep on sharing.
I didn't understand, in the video you show that even if there is a short you have 1V stable on the capacitor. Why spin on another power supply? If you do it is because the low impedance makes you sit pp_1v0_smps but in the video it remains stable. thanks for your videos
very well said sir ive learn a lot of things b watching ur videos u gave as hope for us newbie to explore things in easy way i love the way u delivered ur teaching its easy to understand u deserve a million subcribe
Thanks for your informations i have been looking for explanation for long time especially this case iphone 7 QCOM version thank you for this video you’re a genius 👍👍
your Chanel is a gold mine!
Great job and diagnostic strategy
Best performance.Carry on bro.
This method sometime works, but most of the time, no. Usually the baseband CPU shorted beyond repair.
Thank you so much for the information ill do it with this video when i have the same issue because my iphone 7 unable to activate was overheating so bad idk why but yeah i will try this info ❤
Real Master! Love from Pakistan
Thank you so much for showing such detail repair.it really helps alot.👍👍👍👍
Excellent explanation.
Great video brother! Can help me pls, my iphone se 2020 keeps restarting every 3 minutes:(
ملك استاذنا الكبير الله ينور عليك
السلام عليكم
ممكن اكدر اتواصل مع هذا المدرب تحياتي لك.
you are best bro :) Hello From Turkiye
This is the first video I've watched on your channel, I'm amazed by your approach, very informative,but yet simple,where can I sign up to be a student,?senséí🙏!!
You teach me something and I m very proud of you..tq sir
Absolutely very good information 👌👌👌👌
Another great video to learn from master .... thank you
U r great m thankful to ur channel to see such informative stuff n learn a lot... love to see you
You make my day teacher ❤❤❤
Such a great video, and explanation.
what do u recommend i learn to understand in iphone repairs . pls answer me ur mode of teach is different
Nice bro. Thanks so much
This guy is genius ..Thanks For The Great info ..love it 😘
I think Apple engineers turn to him for tips.
Kalau CPU iPhone 7plus rosak..masih bole repair lagi ke?sparepart iPhone 7plus masih ada lagi ke sekarang
hi sir, do you provide any repair clasess i can participate?
Very helpful video every content is vital ifornation.
Do u offer online trainning/ i want to improve my troubleshooting skills and i have been following ur SOP for a while and ur technics are great. So do u offer training im in Nigeria and what the cost
Great video Master. Thanks for sharing.
Hi iPhone Service Malaysia, I have a shorted PP_1V0_LDO9, can I do the same trick ?
Another really great video and something new to learn Thanks for the video . Jd from UK
100 % correct..success with me also...thanks bro
Why didnt he replace the short capcitor
Hai sir. Just asking.. how about the pp_0v95_LDO4 is short. 0.00 ohm. What is the solution? Can use yours or need to reball the cpubb. It was pleasure to have your answer sir. Thanks
I used this method on the short circuit BBPMU_TO_PMU_AMUX1 (short from BB_RF) line but it still didn't work. is there a solution.?
I’m have another problem after change modem PM ic the service com and go what I have to do
same case
bt not done this problem
What is the name of the second software?
From Where you can see the chips design.... alignments
You are just Genius man
Original gsm solution sir booss booss big thanks
rewa advices to replace the logic board if BB cpu is shorted
You ara a good teacher 👍🏼🫶🏼❤
excelente trabajo amigo. le deseamos mucho mas éxitos. saludos de México.
Saya dari Indonesia, apakah bisa repair cpu baseband short iPhone 11 pro ?
Hi please have got a iPhone 7 Qualcomm,unable to activate this two lines is shorting BBPMU_TO_PMU_AMUX1 and PP_1V0_LD09 though I removed the BBPMU_RF and read again it’s still shorted any solution
Wow it's amazing, good job Mr. Thanks for the solutions 👍. I'm new subscriber, any friend suggest to watch your channel, so it's live to watching and then wow amazing tutorial. Thanks a lot again 👍
Any vdo for iphone 5s for same problem?
amazing master
Hmmm. I think i know this guy. 😂
@@asyrafabas exactly the same guy haha
Very good
شغل رائع
Love your content
Is there any solution for PP_1V0_LDO line on i phone 7 baseband cpu?
you are the best
Really good info no one can check like this
Thank you so much for your video! i learned new things & you explained in detail. Kudos!
Thank you sir 👌👌👌👌👌👌
You are amazing,Nice trick
You are genius brother❤️
Can an iPhone or Android with Snapdragon boot if you remove the baseband chip? Or the GPS chip?
Hello, i have no signal issue on ip7, but it shows emai and modem firmware in settings, but nothing with *#06#... I've tried factory reset, flashing and still the same. What could be bad in baseband cpu?
Bro is Chuck Norris of iPhones. Apple kneels for him fopr advices when something goes bad at the R&D dep. :)
Dear Engineer i try to do the jamper with 2.2 k oms resistance in many 7/7p QCOM and they all short in the same line but the problem for all of them same no baseband,no reading and No actives
Why the 2.2k resistance?
Good question !
To protect the ram line .
How much to repair iphone 7 baseband ic bos.. mine also problem
Good job
Very nice sir
Can i send my iphone 11 pro max to you...apple diagnosis ckp tiade ape problem...but after reset..still fone terpadam sendiri...
Thank you sir you did a great job 👏 appreciated
good job man! u r the best! very cool organized video
Hi I’m from Philippines, I also have that same problem, i cant find any phone repair shop that can fix my iphone baseband problem but I’m not sure already because i tried to activate my iphone 7 using my WiFi but it doesn’t work and I didn’t tried to activate it using pc or mac, if ever that it won’t work, can you repair my iphone also? If ever, how can i contact you?
Hi. What the main cause of this issue. My iphone also have a sames issue
You are so great sir
amazing lot of thanks
Wowwww true master
So.. if cpu bb short, why device cant go to menu??? Just stuck trun off
What about if Amux1 line of bb cpu is shorted?
Hi Lim
I do the same. But doesn’t work
Exactly the same situation. Do you know whats the reason?
I really want to be teach how do I go about it do offer online lessons I want to know please
Love you bruhhhhh from pakistan 💕👍🏼
got iPhone 8 Qualcomm BBCPU, got short PP_0V8_SMPS1_E
Can borrow 0.8v from PP0V8_SOC_FIXED_S ?
Hi Lim, I was wondering if you have a page where the most common tools needed for doing board repairs can be found?
I think I should make one video abt it.
Tools require is just one thing.. most importantly is do not buy the tool that not suitable. That’s why I think I’ll talk about power supply, multimeter...
@@iPhoneServiceMalaysia I appreciate in advance about video on tools and recommendations. Thanks
GREAT SIR 👍
What if instead of using jumper we had the short capacitor replaced with the exactly the dame capacitor that was causing problem and next time if user would flash again he could do so like normal phone does
How much cost? I got same problem on my iphone 7 😢
Hello. I followed the step in detail, but the power baseband does not output any voltage. Can you help me?
In a scale of 1-10 u r f*cked😂…… even though it is 2 years later