⟐ Commented gennaio 02, 2022 at 19:02 GMT-7

i tried that screen on a working phone and it worked fine.
I tried a known working screen on the phone and no display.
when i plug in the charging cord, i can feel the taptic buzz and the audible ding.
when i connected the phone to 3uTools I was able to see that the phone boots, even installed the latest IOS and activated it. so it’s pretty clear the motherboard works.
it appears that even the digitizer works took as i held the power button for 10 seconds then swiped right where the “slide to power off” button appears and 3uTools indicated that there was no longer a phone connected.

i realize this is not enough for a proper diagnosis, but what are your thoughts?
it doesn’t look like it’s anything in the display or display cables.
it seems to read the digitizer.
the connector looks to be in good shape, but that’s hard to say.
if it’s something on the motherboard, what are some of the things it could be? and what’s the difficulty of repairing?

Thanks

⟐ Commented gennaio 02, 2022 at 15:27 GMT-7

Thanks in advance

⟐ Answered dicembre 20, 2021 at 17:50 GMT-7

just wondering if anyone's seen this kind of random reboot weirdness? it's worked pretty much perfectly for well over a year, but rebooted at least 4 times in the last 24 hour.
it hasn't been opened since the battery was replaced.

thanks for any advice.

⟐ Answer accepted dicembre 13, 2021 at 0:32 GMT-7

⟐ Answer accepted novembre 28, 2021 at 5:37 GMT-7

However, my phone was not accepted because there is a small crack on the screen, the size of a grain of rice (which has been there since way before the problem showed up). Their excuse was that it could be “my fault” and is not legible for the repair program.

Of course I bought a new phone, but I still do want to repair this one (for: fun, experience and e-waste reasons). There are some video’s on YT of people doing this, but I would like to follow a manual of some kind.

Is there a place where I can find such manual? Or could someone tell me: what to look for, how to diagnose the problem (burnt chip/capacitor…) and how to replace this with what parts?

Many thanks in advance!

PS: The repair shop offered me a screen fix for €150, then I would be accepted in the repair program, which is ridiculous… ahahah

⟐ Answered novembre 22, 2021 at 16:12 GMT-7

⟐ Answered novembre 13, 2021 at 14:45 GMT-7

⟐ Answered novembre 11, 2021 at 0:18 GMT-7

I’ve seen this in various forums but no great answer to it. The home button is on the part of the phone that we did not touch significantly. All the cables look fine. We looked for small nicks and kinks and couldn’t find anything. Any other ideas?

⟐ Commented ottobre 23, 2021 at 8:02 GMT-7

⟐ Answer accepted ottobre 07, 2021 at 12:25 GMT-7

⟐ Commented ottobre 04, 2021 at 5:50 GMT-7

After changing the battery, the home button doesn’t work at all, including 3D touch and touch ID. Reading online, it said that the most likely issue was due to ripping the home button flex cable, therefore, I ordered a replacement home button to return the functions (apart from Touch ID).

After replacing the home button purchased from Amazon, no functions had returned and it was still unusable. This has got me thinking that the issue is not with the home button itself but a different connector within the phone?

I have put the original home button back in and my next step is to replace the LCD with the hope that I can use the original button.

What cable controls the home button functions? - I wanted to double-check, is it the LCD that should be replaced, or a different flex cable? What do you think?

Thanks in advance.

⟐ Answer accepted agosto 21, 2021 at 16:51 GMT-7

The problem is there is no audio, no mic input from the voice memo app and the volume buttons do nothing. Also there are no sw volume controls. I have also restored IOS twice.

I am thinking that something is screwing with the I2S bus and before I start replacing the other amps and Maggie (which I have never had to do before) I was wondering if there are any other suggestions? All other features of the device seem to be working fine. (Oh and I have tried a different housing as well, so the fault is on the logic board

⟐ Answer deleted agosto 14, 2021 at 14:10 GMT-7

I have an iPhone 7 thats stuck in a boot loop after replacing the lightning cable. The phone has had some problems before so I’ve done past repairs such as a screen replacement and battery replacement. At some point the home button stopped working so it was used with assistive touch and it still worked. Eventually it stopped charging, so I replace the lightning port, first time it doesn’t charge so I return it and order a new one and install it, finally it starts charging again but is immediately stuck in a boot loop. First thing I try is replacing the battery with the old original Apple one it used to have, that didn’t work so I ordered a new battery and tried it but it still didn’t fix it. Would the issue be caused by some malfunctioning component such as the no working home button (despite the phone booting fine while it didn’t work before)? Or is the board dead? Could it be the new lightning port that I installed thats causing the problem? Any ideas?

Thanks

⟐ Answer edited agosto 15, 2021 at 13:54 GMT-7

⟐ Answer accepted luglio 26, 2021 at 18:46 GMT-7

I bought a supposedly dead IPhone 7, after some investigation i found out that it works just fine, but there’s no backlight. So of course like an idiot I bought a new screen without checking if any of the screen connectors are shorted. After installing the new screen and feeling like a big dum dum for a few minutes I found out that this connector is shorted

and after checking where could lie the problem i found this component

on the other side of the board. Now I don’t have a clue where i could find a component matching this one and even if I had the access to a similar one I have no clue what to search for, is it a resistor or a capacitor or a chip of some sort i have no idea (don’t flood me with some technical terms I barely even started to learn all of it). To anyone offering assistance I would be very grateful.

Edit:

I think I found what it’s called

Edit v2:

So I think I found the issue.

This little guy FL3903 is shorted (both sides show an open line to TP0410 while only one side has to have an open line there, I think …). I think it can be caused by a bad U3701 chip or a bad FL3903 chip. I don’t know how to check which one it is but I’m betting on the U3701 chip because there’s a lot of tutorials on the internet for how to replace them.

⟐ Answer accepted luglio 25, 2021 at 18:16 GMT-7

1. Battery replacement
2. Rear camera glass (possibly and sensor)
3. Earpiece speaker

My budget is around 150 euros, with a 10-15% margin.

⟐ Answer edited luglio 14, 2021 at 10:33 GMT-7

⟐ Commented luglio 11, 2021 at 22:10 GMT-7

any help would be appreciated!

⟐ Answered luglio 06, 2021 at 10:55 GMT-7

⟐ Answered giugno 30, 2021 at 11:09 GMT-7