Dead phone Troubleshoot 💯 Dubble Power +Testing+Repair+Schematics Diagram knowledge Pm7150/7150L.

[@andualem-qn4xl]

I am watching your videos from Ethiopia. Thank you very much for your kindness, and I wish to get your premium videos. Really badly, 🙏🙏🙏

[@phoneschematicseducation]

Glad you like them!

[@stonnytonny]

watching from uganda perfect lecture

[@phoneschematicseducation]

😊

[@rizwanshaa]

Sir,u are best,one of the best deep knowledge i have seen in u tube.very clear. I didnt find a material like ur in whole u tube

[@phoneschematicseducation]

Thanks buddy 😊

[@technical5880]

am going to watch all your vids in the name of allah, good chip level repair courses. thanks.

[@phoneschematicseducation]

Glad you like them!

[@sunshineemagbor7549]

Great video sir. The reason why it will generate bulk and LDOs voltages when plug in charge but no voltages when power button is pressed, is because the vbus produces direct current while the battery will only produce direct current when the Dc-Dc ic and pm ic are okay.

[@phoneschematicseducation]

First Thanks for the Answer.But my question is that why power ic enable the secondry line after the charger plugin.I am not asking how circuit works..why circuit design like this.

[@greenteltestingtechsas]

Best of teacher ever I saw,sir you are always mobile master❤. From 🇱🇰

[@phoneschematicseducation]

@@greenteltestingtechsas Thanks buddy

[@pradeepsuranga5335]

❤❤great dear

[@chandraKusum-jv6tt]

Very informative tutorials. Learnt lots of things by watching your video series. To answer the question, there might be short in battery line means short between battery connector and charging ic or line disconnection between battery pin and charging ic or battery id line issue. fails to create divider circuit. Once the battery connect, battery id line should get 0.9v. If not getting the 0.9v CPU not detect the battery connected. So buck voltages will not generate. Once charger connects cc1 / cc2 lines will activate with charging ic, CPU reads the info through sdlc and sdac then vph generates through the vbus line,power ic enables the buck voltages.

[@danielnorman2350]

Hi sir thanks so much for this wonderful video am watching you from Ghana 🇬🇭

[@phoneschematicseducation]

Welcome!

[@albastuzjosee9485]

bro i have seen this issue in respect to answering your question, at times phones behave like it has freezed and no matter how you put the battery, it cant boot, you must insert charger or completery remove battery and insert again after sometime...am looking for the answer in the videos coz no one seems to be correct. youre the best

[@phoneschematicseducation]

Watch 2 part

[@kingtalib6447]

You are doing a wonderful job sir please keep it up

[@phoneschematicseducation]

Thank you, I will

[@fighterzone2337]

Bro i am from Bangladesh.... Keep your video in English. It follow international standard. Love from Bangladesh ❤

[@phoneschematicseducation]

💯 brother.keep watching.

[@matthewluzung122]

Thank you for new upload brother, please keep it up! I'm from Philippines!

[@phoneschematicseducation]

Thanks for watching!. brother

[@StoryFBMizostory]

To the question according to the bq ic tutorial. It's because of power good line, this line active only when charger is connected.

[@phoneschematicseducation]

Thanks for the Answer.But my question was why pm ic enable secondary line.why circuit design like this..you r also right circuit work like this.but why

[@StoryFBMizostory]

@@phoneschematicseducation thank you for reply, let me try again, i think it is because battery voltage is not specific sometime 4.2 sometime only 3.2, for safety reason the power ic dont release these ldo or boot voltage because insufficent power can cause damage to the component...

[@phoneschematicseducation]

@@StoryFBMizostory nope

[@faiyazchishti2444]

Very good information

[@phoneschematicseducation]

Thanks

[@samsonmanda3203]

You the best❤

[@kapildas8620]

Deep knowledge sir

[@rajeshraju1392]

Sir good knowledge ❤❤good teaching

[@phoneschematicseducation]

Thanks and welcome

[@jaswinderSingh-yt5bf]

When charger connect with phone then dm, dp lines sense cpu and charging ic also switching the voltage through we know from boot cap and vph from coil and charging section active in power ic, so buck voltage produce power ic when charger connected and without battery no charging section active in power ic only vph line is active and goes to power ic when we press power button then voltage ground and powee ic active then produce buck voltage that i know but you are master of this line i am not and i am 57yrs old and you are master and genius person of this line from my side God bless you 🙏

[@phoneschematicseducation]

Thanks for Answering sir..u almost there but..My questions was why the circuit design like this.why PM ic enable secondary line..how the circuit works I am not asking this....You Teach m new lesson sir.. Learning is important.Age is just a number... Thankyou so much sir You Motivate me

[@gangadasuresh-dn2ok]

@@phoneschematicseducationsir but dp dm line missing also mobile just showing logo.

[@albastuzjosee9485]

@@gangadasuresh-dn2ok i think you are wrong because even without dp an dm, according to question asked, the phone with only charger will still boot and show display.

[@jaswinderSingh-yt5bf]

You are genius and keep it up 👍

[@phoneschematicseducation]

I am not genius sir..But try to learn something new..

[@vodongtrieu]

How can I received more videos useful like this teacher ?

[@phoneschematicseducation]

@@vodongtrieu Already uploaded

[@humphreysmphoka6448]

This is a deep knowledge,, sometimes VBAT cannot activate Bulk and LDO because it is protected by divider circuit but Vbus is direct... VBAT requires power ON

[@phoneschematicseducation]

Watch the video again.

[@ikegodwin1554]

My answer is that when the charger is connected the PMIC through the DC to DC charger IC sends signal to the CPU through the SYS line and inversely it will turn on the PMIC using the BUCK volt.

[@phoneschematicseducation]

Watch lesson 2 for answer

[@sakthistudio3408]

Sir realy i dont know the answer for that question...... I am very interest for know this amswer.... And one more request.... Dont speak fastly..... I cant not understand sir.... Just speaak slowly.... Thank u sir.... Congrats for ur work.... U are a mentor....❤

[@phoneschematicseducation]

Thanks

[@MustafadeSimba]

Because when charger connected in charging port Dm and Dp lines make short together and this lines connected to Cpu and PM Ic, so when charger connected make CPU to sense and send signal to Power ic and to be on action to generate secondary lines

[@Sherifone78]

Answer, because charging will activate CPU

[@phoneschematicseducation]

@@Sherifone78 yes

[@sebisbelera8846]

B/ce when we plug in charger vph is produced .if vph power is produce seconder line is produced...

[@alexfahad1139]

when connect charger DC to DC ic make vph voltage then power ic make buck and ldo voltage

[@TechnologiesSysteme]

Because the charger VBus enters the DC TO DC, the PMID confirms that the 5V of the VBUS are really present, the DC TO DC activates the VPH from the bistrack. The HPV enters the PMIC and the DC TO DC also sends the VSYS OK which allows the PMIC to create the Buck Voltage and LDO Voltage. If the phone is dead the DC TO DC cannot create the HPV and the VSYS OK, for this lesson it is the Fault N which allows the second PMIC to create the buck and the LDO

[@phoneschematicseducation]

U tell me the process but my question is why pm generate secondary lines

[@MaheshIndunil-zt6js]

Hi good stuff. I believe when the battry connects, there will be an issue on the battry id line. Once power button press that's why it does not generate the buck voltages. Once connect the charger vbus line will activate and power ic generates the buck voltages. Once usb connects the charging symbol has to show on display. So phone has to do some work I mean for example power shoud go to display, cpu has to do some calculation to show precentage, ram should founction, for that reson every componets should recive the voltages that is why when connect charger buck voltages will generate.

[@phoneschematicseducation]

Nope..watch the 2 Lesson of this topic

[@MaheshIndunil-zt6js]

Thank you, got the points from lesson 2

[@akhileshgupta3518]

Sir ji mai ek batt bolu aapko bura na lage ....mai bahut garib or. Mai mobile repering sikhna chahta ..aapki video achhi lagi par mujhe esme englush aap bataya mujhe hava bhi nahi....hindi koi eska upyay❤

[@phoneschematicseducation]

Kuch wait kare

[@neerajkumaryadav1145]

Sir aapke video veri deep me hote hai thanks sir

[@phoneschematicseducation]

Thanks

[@vijaychari6042]

When a charger is connected we get always 5v . And the pcb is designed always on for charging section, vph + system ok generated so pm gets activated, but when battery inserted, 1st condition it must be charged to certain level to activate vph, then dctodc ic should detect or sense battery through thermal and id lines, if the voltage level is ok then it produces vph ,power on voltage generated and when pressed sy ok sent, then pm gets activated and secondary voltages generated

[@phoneschematicseducation]

U almost there brother bt why circuit design like this.why pm enable secondary line after charger plugin

[@vijaychari6042]

​@@phoneschematicseducationnow this next question is beyond my syllabus,whatever available on KZbin I am grasping, now eagerly waiting to know from you sir, thank you for your good initiative.

[@vijaychari6042]

May be to load software it is designed by manufacturer in all ready to connect position

[@pnoechie21]

I guess, the cpu memory rtc battery needs a always supply voltage. So when the charger plugs in, it gives a secondary voltages 😊

[@vijaychari6042]

When a charger is inserted in battery drowned set ,to show that it is now charging,or not charging, or to indicate any message it should come in to action for that all functions of the set should work so for that pm activates cpu ,emmc,by powering them, otherwise customer will think it is dead.

[@brainboxtech5059]

Great content. Please my Borneo schematic v7 13 patch compatible search is not working. What do i do boss? Any guideline will be much appreciated

[@phoneschematicseducation]

Restart pc Check Date&Time Means clock setting Install again Contact Borneo customer care.

[@farshardmohamed8519]

One of Faults there is disconnection to battery line to charging IC so when battery is installed charging ic dont have input voltage to generate vph so when connect to charger its works correct me if im wrong great content keep up

[@phoneschematicseducation]

Nope

[@RazmiInshafOfficial]

might've there is a line disconnected between charging ic and battery pin or there is a problem with b thermal line or battery id line which is divider circuit 😊

[@phoneschematicseducation]

Watch the next part

[@christiansangwa-hp5jn]

excellent video, I have a question in we have two integrated circuits Hi6422 and Hi 6555 the Hi6422 gives the vph which is correct, the pwron is at 1.9 V but all the coils do not output any voltage and the two integrated circuits do not heat up not. Could the problem be related to the computer program?

[@phoneschematicseducation]

Tell me the Model name

[@christiansangwa-hp5jn]

@@phoneschematicseducation The model is honor 10i

[@Glitchinfo]

Maybe EDL point shorting that why pm ic get some voltage through to the vph line? 🤔🤔

[@phoneschematicseducation]

Nope

[@Glitchinfo]

@@phoneschematicseducation then right answer?

[@Glitchinfo]

@@phoneschematicseducation then right answer is?

[@phoneschematicseducation]

Watch the 2nd lesson 2 Power ic topic . Answer ±More knowledge

[@KhanKhan-cf9gj]

Sir maybe vbat miss from dc to dc that's why if you plug charger you get Secendery supply if you connect battery 🔋 and press power maybe vbat miss or power botton problem

[@ahmedmobilerepairingcenter6026]

Very good

[@phoneschematicseducation]

Thanks

[@Savedoff-qo5ei]

I’m watching the video through a translator and perhaps I misunderstood the question, if you asked why the phone won’t turn on when the battery is low, but if you connect the charging cable it will work, I think that to turn on the power ic you need a voltage of 3.7-4.2 and if the battery is low it won’t work, and when we connect the charging cable, the inductor on the vph line, through the generation of a PWM signal from the charging chip, will grow from 3.7 to 4.2 and then the power ic will be able to turn on additional lines if I wrote it wrong, tell me

[@phoneschematicseducation]

My question is why pm generate secondary lines buck or l.d.o section.. read the other comments u will better understand.what was my question

[@Savedoff-qo5ei]

when we connect charging, pm creates voltage for the central processor and other components associated with charging, so that the processor turns on charging the battery and everything connected with it, fast charging or normal, and displays it on the display If I didn't understand the question correctly, forgive me

[@saved0ff]

I'm writing through a translator so something might be wrong

[@phoneschematicseducation]

@@saved0ff buddy someone already give this answer.now 2nd thing u said pwm signal on charging chip something in previous comment.can u tell pmw line work.according to.how this line disable the secondary line or not activated pm

[@Savedoff-qo5ei]

@@phoneschematicseducation I don't know the answer to this

[@selvamkumar656]

Sir can install and rejecter boreneo schematic in tablet.

[@phoneschematicseducation]

Borneo schematics is windows based software.

[@gangadasuresh-dn2ok]

charger I'd line detected cpu active power button line(1.8v) tracking was missing or power ic to charging ic ka tracking missing...check battery connector gr value missing or battery strip cutting or power button cutting.. check

[@phoneschematicseducation]

No..watch the video again

[@phalaw4915]

When charger connect power ic switch Bucks and ldo volts through power good signal from charging ic or Bq ic

[@phoneschematicseducation]

Thanks for the answer.you r right bt..I am not asking this.My questions was why pm ic enable the secondry line after charger plugin.why circuit design like this

[@sakthistudio3408]

Dp dm line in fix in cc connector..... Its go to cpu... Cpu sense or check (power ic out put lines ) Vbat line la not fix dp and dm

[@phoneschematicseducation]

Nope

[@Godunjoify]

Probably battery is blocked for safety to not get drained.

[@phoneschematicseducation]

Nope

[@kingtalib6447]

I think it because there's problem in the vbat line or the vbat line is shorting.

[@phoneschematicseducation]

No.. watch the video again

[@sakthistudio3408]

Power ic generated secondary lines because all the ldo sections are control by power ic....

[@phoneschematicseducation]

Right bt why pm generate secondary lines,ldo.or buck section

[@chonggogaming5182]

Sensei

[@soulfreeuchendu]

Vbus makes vph and the vbat doesn't because the vbat side of the dc2dc ic is faulty (faulty dc2dc ic)

[@phoneschematicseducation]

No

[@kareemjamiu6600]

Because charger produces 5v and battery produces 3.7v

[@MusaKanu-x4f]

No idea sir

[@phoneschematicseducation]

Watch 2nd lesson

[@Vedhasriyadav]

Acok line

[@phoneschematicseducation]

Oky

[@Vedhasriyadav]

@@phoneschematicseducation DC MACHINE Redings video pls I HAVE MOBILE SHOP 📱

[@AshwaniKumar-zk3ml]

Power key circuit faulty

[@phoneschematicseducation]

No. watch again videos

[@AhmedEdris-w3c]

I don.t the answer

[@phoneschematicseducation]

Alright.thanks for the reply

[@christiansangwa-hp5jn]

excellent video, I have a question in we have two integrated circuits Hi6422 and Hi 6555 the Hi6422 gives the vph which is correct, the pwron is at 1.9 V but all the coils do not output any voltage and the two integrated circuits do not heat up not. Could the problem be related to the computer program?

[@phoneschematicseducation]

@@christiansangwa-hp5jn I will give ur Answer but for this I started A questions Answers series.so you can Ask me question in recording foam.with your details name. country name.experince in this field.what u feel about this channel.60 to 90 section video.& Send me on my gmail.after I will explain ur answer in video+ edit with your question video.so everybody can understand+ some thing interesting content create.i hope u will understand.So record ur question video with detail.send me on [e-mail]

[@christiansangwa-hp5jn]

@@phoneschematicseducation OK I will send you to your email

[@TechnologiesSysteme]

Because the charger VBus enters the DC TO DC, the PMID confirms that the 5V of the VBUS are really present, the DC TO DC activates the VPH from the bistrack. The HPV enters the PMIC and the DC TO DC also sends the VSYS OK which allows the PMIC to create the Buck Voltage and LDO Voltage. If the phone is dead the DC TO DC cannot create the HPV and the VSYS OK, for this lesson it is the Fault N which allows the second PMIC to create the buck and the LDO

[@phoneschematicseducation]

Watch the video again.why pm enable secondary line not how