So i get this iPhone 7 on my desk, with water damage, very light corrosion here and there, cleaned and replaced the caps who seemed damaged, now the phone charges normaly (~1A on a 1A charger).

The iPhone turns on and after ~5 second resets itself, so i thought i might be the iOS that is the problem, so i restored with iTunes to latest version, all went well no errors the screen was lit the entire time with the Apple logo and the progress bar. After the restore finished, the iPhone went down and turned back on, but still the boot loop after ~5 seconds.

I repalaced/rebaled the Tristar and Audio IC’s also measured all the relevant main voltages. Also tried to turn on the phone without all the flexes… still boot loop.

Any hints?

⟐ Answer accepted декабря 15, 2019 at 11:51 GMT-7

Any help is apreciated!

Here is the link to the Video:

https://cdn.discordapp.com/attachments/2...

⟐ Commented декабря 14, 2019 at 13:23 GMT-7

⟐ Answer accepted декабря 04, 2019 at 19:44 GMT-7

⟐ Commented декабря 04, 2019 at 6:38 GMT-7

I had an iphone with audio ic problem. Jumped C12 and tried starting it with a power supply. It told me it was short and I found a capacitor that was loose on VCC main. It was on the other side of the main board so it should not have been me who knocked it “loose”

Now when i plug in the battery or power supply the phone starts automatically. I have not seen this happen. When I switch off the phone it also reboots

Removed the audio IC to check if something is shorted but it looks clean and audio recording also work.

removed all the “glue” around the “power on button“ jack and dock connector jack and everything looks clean. Measured their values and those are all also correct according to ZXW.

EDIT: Swapped a board for the customer. I will send his board to China for repair. Labor isn’t worth the time/money.

⟐ Answer accepted ноября 26, 2019 at 3:28 GMT-7

⟐ Answer accepted ноября 25, 2019 at 5:29 GMT-7

Can %100 alcohol damage or effect any electrical components?

⟐ Answer accepted ноября 22, 2019 at 14:44 GMT-7

⟐ Answer accepted ноября 22, 2019 at 5:43 GMT-7

What are my chances? if they refuse, can i appeal?

⟐ Answer accepted ноября 20, 2019 at 4:55 GMT-7

any other reasons this could be doing this?

⟐ Answered ноября 19, 2019 at 10:58 GMT-7

recently i received iPhone 7 with bootloop issue and touch issue. So i placed C12 audio jumper and i found, than touch does not work. So i tried:

reball HOMER 

replaced M2800

replaced U4805 because touch ID had damaged resistor (open line - infinity resistance) on I2C_MESA_TURTLE_SCL_CONN line.

Touch connector resistance OK

LCD connector resistance OK

Where can be problem?

When i rehot M2800 touch works for a few minutes.

⟐ Answer accepted ноября 19, 2019 at 5:38 GMT-7

So I have a water damaged iPhone 7 that I'm trying to recover back to working condition. This is my first time working on a water damaged phone. I have the iPhone mostly dissassembled, Logic board soaking in 91% ISO (planning to brush connections with soft brush, although there isn't much corosion on them), old battery is out and am holding off on putting new one in, there isn't much corrosion on the connections from what I can tell, but there is quite a bit on the left inside part of the phone near volume rockers and a little on the backside of the display shield.

What else can I soak and or wash with ISO? Or what futher steps should I take before reassembling the iPhone. Thank you in advance for the help!

⟐ Answer accepted ноября 12, 2019 at 5:28 GMT-7

When i charge my phone or use snapchat and the phone get hot it reboots and the wifi is grayed without a mac adress. But when i hit the back with medium force and reset it it works.

I changed the ic but the problem remains the same.

So please if anyone knows what the problem is I’ll be happy to hear it.

Thank you.

⟐ Answer accepted ноября 03, 2019 at 6:43 GMT-7

⟐ Answer accepted ноября 01, 2019 at 18:37 GMT-7

⟐ Answered октября 30, 2019 at 10:31 GMT-7

Tested speaker phone and voice memo. Mic was working, as was the speaker. Diagnosed a faulty earpiece speaker.

Replaced the earpiece. Re-attached the LCD and camera flexes. Put battery + LCD shield back on, same with camera shield. Closed up and secured bottim screws.

4 minute job. All screws in correct place. Didn’t touch home button.

Booted phone. Tested calls. All work fine, issue resolved.

But… TOUCH ID not working, and unresponsive Home button. WTF??!!

Any ideas?

⟐ Answer accepted октября 28, 2019 at 15:52 GMT-7

link to photos of broken parts: https://imgur.com/a/NN2OF

⟐ Answer accepted октября 25, 2019 at 16:55 GMT-7

When I connected the old cracked one back touch id wouldn’t work anymore.

First it reacted like I was double tapping. Inspected every cable and pin, but can’t find any breaks. I also did an DFU reinstall, but touch id still won’t work.

When I try to add a fingerprint it doesn’t register anything.

The home button works fine besides touch id.

What could the fault be?, could the screen I test fitted have caused damage?.

When I removed the old screen I didn’t touch home button flex cable, but could damage to the other three flex cables that connects to the logic board result in symptoms like the ones I have?

⟐ Answer accepted октября 24, 2019 at 6:30 GMT-7

Vacuum Time: 30 Seconds

Laminating Time: 30 Seconds

De-bubble time: 15 Minutes

Temp: 45c

I`ve searched the internet for days but I can`t find any answers, hope somebody can help.

Kind Regards

⟐ Comment deleted октября 22, 2019 at 6:28 GMT-7

Any help would be very much appreciated. Thank You!

⟐ Commented октября 16, 2019 at 18:31 GMT-7