logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

iPhone 6: Non-operational Post Home Button Replacement - iTunes Safe Mode Detection

max_gsm 7731 19
Best answers

Dlaczego iPhone 6 przestaje się uruchamiać po podłączeniu wymienionej taśmy/przycisku Home i jest widoczny tylko w iTunes w trybie odzyskiwania?

Sama podmiana przycisku Home z iPhone’a 6s nie powinna unieruchamiać iPhone’a 6, bo elementy Home/Touch ID z 6s, 6 i 6 Plus pasują fizycznie i funkcjonalnie, jeśli są sprawne [#16799935] Jeśli telefon startuje bez taśmy, a po jej podłączeniu gaśnie, trzeba szukać zwarcia albo uszkodzenia na tej gałęzi lub na płycie, a nie zakładać od razu winy samego modelu przycisku [#16799935][#17006567] W podobnym przypadku zwrócono uwagę na mocno grzejącą się cewkę L1216; jej wymiana i wymiana U1202 nie pomogły, co wskazywało na poważniejszą usterkę [#17001027] Warto sprawdzić, czy w taśmie nie ma zwartego kondensatora, bo może on powodować grzanie cewki [#17003599] Diagnostykę najlepiej zacząć od zasilacza laboratoryjnego, pomiaru poboru prądu i sprawdzania toru multimetrem, bo bez tego trudno namierzyć usterkę [#17006567]
Generated by the language model.
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
Report a violation of the law
Reply | New topic
  • #1 16796849
    max_gsm
    Level 18  
    Posts: 429
    Rate: 42
    Colleagues a problem with the iPhone 6, hit the glitch with the home button not working.
    After unscrewing, it turned out that the tape is cracked just from this button, i.e. to replace the entire element. The customer never used a fingerprint reader, so he didn't care about it, it was just about a mechanical button that worked.
    After installing the button from the second phone, the phone at start-up only displayed the apple logo and turned off. After disconnecting the tape from the button, the phone turned on again, but when you reconnected the tape turned off again and did not turn on again. No reaction under the computer and under the charger, whether with or without the home button. The only reaction is detected by iTunes in safe mode, but when I try to play it, when I wait for the iPhone, nothing happens, it hangs for so long. Please help.
  • ADVERTISEMENT
  • #2 16797185
    KRY5PIN
    Level 37  
    Posts: 3010
    Help: 312
    Rate: 463
    When replacing home, you have removed all the cheese from the motherboard?
  • ADVERTISEMENT
  • #3 16797211
    max_gsm
    Level 18  
    Posts: 429
    Rate: 42
    yes I was unpinning the whole thing, but on a detached battery. There is one more thing because as I look now it turns out that I installed a home from iPhone 6s, maybe this is the reason, because I had two dismantled and wrong buttons because they are identical even in assembly
  • #4 16797234
    KRY5PIN
    Level 37  
    Posts: 3010
    Help: 312
    Rate: 463
    It certainly won't move you. But above you write that now it does not run, right ??
  • #5 16797252
    max_gsm
    Level 18  
    Posts: 429
    Rate: 42
    So now it doesn't even fire on the iPhone 6 button at all, no reaction as if the one from 6s damaged something
  • #6 16797281
    KRY5PIN
    Level 37  
    Posts: 3010
    Help: 312
    Rate: 463
    Screws from the screen that covers the connectors uod lcd well wrapped, each in its place?
  • ADVERTISEMENT
  • #7 16797297
    max_gsm
    Level 18  
    Posts: 429
    Rate: 42
    I haven't even screwed them on at all because I always check everything is oki before turning, which is not a problem. the question whether home since 6s could damage something or rather a problem in something else?
  • #8 16799935
    RafalB

    Level 28  
    Posts: 1108
    Help: 91
    Rate: 221
    TouchID fits physically and functionally between 6s / 6 / 6plus, of course, then acts as the / Home button. He shouldn't make problems, provided he is in working order.
    Company Account:
    iFixThis
    Łowmiańskiego 18, Poznań, 60-685 | Tel.: 516XXXXXX (Show) | Company Website: https://www.instagram.com/ifixthis.pl/
  • #9 16800202
    max_gsm
    Level 18  
    Posts: 429
    Rate: 42
    It's very interesting what you write, because I thought it was the mistake of the buttons from 6s to 6 that was a problem, and if they actually fit, I have no idea what happened, because the button was 100% functional because I was checking in 6s.
    Somewhere on a foreign forum I found the same problem that after connecting the home from 6s to 6 the phone did not start, but it was enough to disconnect it and everything was back to normal and unfortunately not for me.
  • #10 16838990
    AleexMusic24
    Level 7  
    Posts: 15
    Rate: 1
    A strange problem, I have never encountered such a thing. I would bet on path damage, but since you write that you didn't screw in, I have no idea. You need to make measurements and look for the problem. Start with an ammeter and see if something is happening.
  • ADVERTISEMENT
  • #11 16999624
    Dracov76
    Level 9  
    Posts: 26
    Rate: 6
    I have the same problem, if you already know what the problem is or if you find out then let me know
    Question from me, maybe the iPhone did not have time to turn off and you have already signed the new button?
  • #12 17001027
    max_gsm
    Level 18  
    Posts: 429
    Rate: 42
    Unfortunately, the CD will probably go to parts because it has already been sent to two other websites and they have not managed it either. For "Dracov76" check if the L1216 coil gets hot on your plate because it was very hot in my case, but its replacement or replacement of the U1202 also did nothing, also a serious fault.
  • #13 17001141
    RafalB

    Level 28  
    Posts: 1108
    Help: 91
    Rate: 221
    max_gsm wrote:
    Unfortunately, the CD will probably go to parts because it has already been sent to two other websites


    Although you got a sensible diagnosis?
    Company Account:
    iFixThis
    Łowmiańskiego 18, Poznań, 60-685 | Tel.: 516XXXXXX (Show) | Company Website: https://www.instagram.com/ifixthis.pl/
  • #14 17001408
    hacker_ice

    Level 24  
    Posts: 871
    Help: 36
    Rate: 101
    Right, share the diagnosis. I had it in the iPhone 6S when substituting the 6G button restarted after seeing the apple. It is possible that a good button or some Chinese replacement did something to the Mesa, the system got down and maybe it closes the communication with the CPU, so the phone has not stood up. Let me know what the diagnosis is, until I'm curious.
    Company Account:
    Apple Surgery
    Śląska, Bargły, 42-262 | Company Website: https://applesurgery.com.pl
  • #15 17003599
    Glemark1
    GSM specialist  
    Posts: 1204
    Help: 190
    Rate: 111
    max_gsm wrote:
    Unfortunately, the CD will probably go to parts because it has already been sent to two other websites and they have not managed it either. For "Dracov76" check if the L1216 coil gets hot on your plate because it was very hot in my case, but its replacement or replacement of the U1202 also did nothing, also a serious fault.


    Check if any of the capacitors in the cable is short-circuited because it can cause heating of the coil.
  • #16 17004611
    RafalB

    Level 28  
    Posts: 1108
    Help: 91
    Rate: 221
    Maybe someone else will have problems verifying the damage of the TouchID scanner power supply, the following information will be useful :)

    iPhone 6: Non-operational Post Home Button Replacement - iTunes Safe Mode Detection

    iPhone 6: Non-operational Post Home Button Replacement - iTunes Safe Mode Detection

    iPhone 6: Non-operational Post Home Button Replacement - iTunes Safe Mode Detection

    iPhone 6: Non-operational Post Home Button Replacement - iTunes Safe Mode Detection

    iPhone 6: Non-operational Post Home Button Replacement - iTunes Safe Mode Detection

    iPhone 6: Non-operational Post Home Button Replacement - iTunes Safe Mode Detection
    Company Account:
    iFixThis
    Łowmiańskiego 18, Poznań, 60-685 | Tel.: 516XXXXXX (Show) | Company Website: https://www.instagram.com/ifixthis.pl/
  • #17 17006386
    max_gsm
    Level 18  
    Posts: 429
    Rate: 42
    Regarding the diagnosis that I heard, unfortunately nothing sensible, because after the service
    spreads his hands and can not repair the phone, I just heard that the processor fell, which in my opinion is nonsense because as I wrote earlier that the coil marked as L1216 gets very hot, after removing this coil nothing heats up, the capacitors checked and everything looks ok The home button was mounted 100% original not Chinese, so it is strange that it just ended this way. Generally a difficult case with this fault, and today I received another Iphone 6 but this time after flooding and also a heavy topic because there is a short to ground in the entire PP VCC MAIN line, i.e. all capacitors on this line are shorted to ground and the line is quite large and it is also unknown where to start, because nothing heats up, several capacitors have already been desoldered but without results.
  • #18 17006479
    Glemark1
    GSM specialist  
    Posts: 1204
    Help: 190
    Rate: 111
    In this case, I use a thermal imaging camera and I do not have to desolder anything in the dark. Very simplifies finding damage. You can try using a milling machine can help find a short circuit.
  • #19 17006483
    hacker_ice

    Level 24  
    Posts: 871
    Help: 36
    Rate: 101
    As for the phone what the VCC_Main line is compact, check the capacitor near WiFi, then chestnut, mesa, backlight, audio amp, what the systems look like and whether there was water. Get connected to vcc_main, not the batteries, and write the current consumption.
    Company Account:
    Apple Surgery
    Śląska, Bargły, 42-262 | Company Website: https://applesurgery.com.pl
  • #20 17006567
    RafalB

    Level 28  
    Posts: 1108
    Help: 91
    Rate: 221
    max_gsm wrote:
    Regarding the diagnosis that I heard, unfortunately nothing sensible, because after the service
    spreads his hands and can't repair the phone, that's what I heard the processor is down


    Unfortunately, there are many websites, few specialists.

    As for the subject of diagnosis, the subject is not easy or simple, basic knowledge and tools are required (freezers, rosin, thermo papers / receipts, gel fluxes or ipa are cheap things) or specifics of thermal imaging cameras.
    However, even all this equipment for nothing when there is no experience and familiarity, he finds out about it every day, especially when servicing someone, a short circuit on many balls of the main line to gnd will not show any camera.
    Here I need an X-ray ... it starts to get in my head :)
    Flying through the pattern given by hacker_ice is a good way and it's certainly worth starting with, power supply, microscope and multimer your best friend.
    Company Account:
    iFixThis
    Łowmiańskiego 18, Poznań, 60-685 | Tel.: 516XXXXXX (Show) | Company Website: https://www.instagram.com/ifixthis.pl/
Reply | New topic
Report a violation of the law

Topic summary

✨ The discussion revolves around an iPhone 6 that became non-operational after a home button replacement. The user initially replaced the broken home button with one from an iPhone 6s, which led to the device only displaying the Apple logo before shutting down. Disconnecting the home button allowed the phone to power on, but reconnecting it caused the device to turn off again. The phone shows no response to charging or computer connections, except for being detected by iTunes in safe mode. Various suggestions were made, including checking for damage to the motherboard, ensuring proper connections, and verifying the functionality of the home button. Some participants noted that the home button from the 6s should not cause issues if it is functional. However, the user reported that the device was sent to multiple repair services without resolution, and there were concerns about potential damage to the motherboard or other components.
Generated by the language model.

FAQ

TL;DR: After a home-button swap on iPhone 6, 2 repair shops failed to revive it; “the L1216 coil gets very hot.” [Elektroda, max_gsm, post #17001027]

Why it matters: This FAQ helps phone technicians diagnose iPhone 6/6s home-button induced no‑boot and Touch ID rail faults quickly.

Quick Facts

Why won’t my iPhone 6 power on after replacing the Home button?

A short or fault in the Touch ID/Home power path can hold the phone down. One tell is the L1216 coil running hot. Replacing L1216 or even U1202 may not resolve if the underlying short remains. Start with current‑draw checks and thermal probing to localize the fault. [Elektroda, max_gsm, post #17001027]

Can I use an iPhone 6s Home/TouchID button in an iPhone 6?

Yes, it fits physically and functions as a mechanical Home key only. Touch ID pairing will not carry over between devices. As one expert put it, “TouchID fits physically and functionally between 6s/6/6plus.” [Elektroda, RafalB, post #16799935]

My iPhone only shows the Apple logo when the 6s button is connected. What does that indicate?

That pattern suggests the attached Home/TouchID flex or its rail is upsetting boot. Detaching the flex allows the phone to start, confirming the fault is on that path. Inspect the flex, connector, and Touch ID supply components. [Elektroda, max_gsm, post #16800202]

What immediate checks should I do before blaming the CPU?

Measure current draw on a bench supply and watch for a hotspot. If L1216 overheats, you are on the right rail. CPU failure is less likely than a localized short. Document temperature and current for each step. [Elektroda, max_gsm, post #17001027]

Which tools help find shorts on iPhone power lines?

Use a lab power supply, multimeter, thermal camera, freezer spray, rosin, or thermal papers. Visualize heat while injecting power to a limited voltage. “Power supply, microscope and multimeter [are] your best friend.” [Elektroda, RafalB, post #17006567]

Could misplacing the LCD shield screws stop the phone from booting?

Yes. Mixing the lengths can damage traces near the display connector area. Always return each screw to its exact location to avoid hidden board damage. Verify before powering up after any screen or button work. [Elektroda, KRY5PIN, post #16797281]

What is PP_VCC_MAIN and why do I see a full short there?

PP_VCC_MAIN is a primary power rail feeding multiple subsystems. In one case, “the entire PP VCC MAIN line” read short, meaning all rail capacitors measured to ground. That’s a board‑level short to locate with thermal or injection methods. [Elektroda, max_gsm, post #17006386]

How do I troubleshoot an overheated L1216 in three steps?

  1. Remove power and check continuity to ground on the Touch ID rail.
  2. Inject low voltage/limited current; watch L1216 and nearby caps for heat.
  3. If still hot, isolate by lifting L1216 and test downstream for the short path. [Elektroda, max_gsm, post #17001027]

I swapped L1216 and U1202, but the fault persists. What does that mean?

That’s an edge case showing the short is elsewhere on the rail or under‑IC. Continue sectional isolation and inspect flex, connector, and downstream passives. Consider hidden damage along the Touch ID path. [Elektroda, max_gsm, post #17001027]

Should I pre‑screw the display shield before testing?

Test the device with the shield off, but track each screw’s original hole. Do not mix lengths after testing. This prevents latent mechanical damage when you finalize reassembly. [Elektroda, KRY5PIN, post #16797281]

What if the phone hangs in recovery and iTunes restore never progresses?

A hardware short can stall restores. If the device is only detected in recovery and never restores, return to hardware diagnostics on the Touch ID/Home rail and PP_VCC_MAIN. Resolve power faults before software recovery. [Elektroda, max_gsm, post #16796849]

What’s a practical workflow for PP_VCC_MAIN shorts on water‑damaged iPhone 6?

Use thermal imaging to spot the first heat bloom, then lift local capacitors instead of random removal. A milling machine or micro‑abrasion can help expose buried shorts carefully. Log current while you isolate zones. [Elektroda, Glemark1, post #17006479]

Where can I find reference points for Touch ID power verification?

Use the shared diagrams highlighting the Touch ID scanner power supply nodes and test pads. Probe those while injecting power and compare behavior before and after isolating L1216. [Elektroda, RafalB, post #17004611]

Does a foreign or aftermarket Home button risk damaging the Mesa line?

A bad or mismatched button/flex can upset the Mesa/Touch ID communication and stall boot. One tech noted restarts after mixing a 6G button with a 6s. Inspect or replace with a known‑good original flex first. [Elektroda, hacker_ice, post #17001408]

What’s the success rate when two shops already failed?

Escalation often needs board‑level skills and tools. In the cited case, two external services failed, indicating advanced fault isolation was required. Plan for component‑level work and extended diagnostics. [Elektroda, max_gsm, post #17001027]
Generated by the language model.
ADVERTISEMENT