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

Question

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...

KRY5PIN · Answer

When replacing home, you have removed all the cheese from the motherboard?

max_gsm · Answer

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

KRY5PIN · Answer

It certainly won't move you. But above you write that now it does not run, right ??

max_gsm · Answer

So now it doesn't even fire on the iPhone 6 button at all, no reaction as if the one from 6s damaged something

KRY5PIN · Answer

Screws from the screen that covers the connectors uod lcd well wrapped, each in its place?

max_gsm · Answer

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?

RafalB · Answer

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.

max_gsm · Answer

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.

AleexMusic24 · Answer

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.

Dracov76 · Answer

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?

max_gsm · Answer

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.

RafalB · Answer

Although you got a sensible diagnosis?

hacker_ice · Answer

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.

Glemark1 · Answer

Check if any of the capacitors in the cable is short-circuited because it can cause heating of the coil.

RafalB · Answer

Maybe someone else will have problems verifying the damage of the TouchID scanner power supply, the following information will be useful

max_gsm · Answer

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.

Glemark1 · Answer

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.

hacker_ice · Answer

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.

RafalB · Answer

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.

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

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