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Only backlight on the screen...

Hi.

I have an iPhone 6 in for a screen replacement. I had two screen left, but i´ve had an issue with both.

First I tried the screens without reassembling the small parts (camera, LCD shield plate ect), and it worked fine.

When i reassembled the small parts it just have backlight. Works fine if I connect the old screen

Also: the phone will not turn on when the new screen connected. But if the phone is powered on and I connect it, I get the backlight..

This happend to both.. Can´t see any damage on the flex cables.

I´ve done alot of iPhone repairs, so I´m not a newbie :p

Hope someone can help me understand what happened/what went wrong :p

- Alex

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Puan 5

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When you say you get backlight you see a white background or black background?

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It´s black..

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So if I understand your question correctly you are asking what's wrong with the screens because the phone works with the old screen correct?

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Yes.. And that the new screen worked fine when I tested it without the LCD shield plate ect..

So i'm asking what might have gone wrong

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Is it recognized by iTunes?

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The iPhone 6 screen connector is bigger and easy to bend. However if you have checked the connectors and they are not damaged or bent then I'd say you got defective parts. In cheaper parts the flex joint is not attached correctly and it is easy to damage it.

I'm assuming you tried the following:

- test screen without small parts to see if that worked

- if you don't unplug battery during repair you did a soft reset with new screen

It'd be interesting to see if those screens behave the same way on another phone :)

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Tried it on another phone, and it´s the same...

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It's just a bad flex on those screens IMO

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Hey Israel, I didn't know you were on here too. LOL

I have a 6S with backlight and no image. I've changed the U4020 & U4000 and stumped.

Nevermind, I found out it was the connector! It was bowed open a bit. Otherwise it looks good. I just clamped it inwards with tweezers.

You are a genius Israel, thank you !

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This is inaccurate for my issue. I tried several different screens and all had the same outcome.

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Haha thanks T1T! I just saw your comment! - Tyler, can you see backlight or image on your screen? is it a 6 plus? More info would help!

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After connecting new screen try for hard reset.

Reset the iPhone by holding the sleep/wake button at the top right of the device and the home button at the bottom center of the face at the same time.

Hold them both until you see the screen go black.

Wait until the white Apple logo appears.

When this happens, you can let go.

The device will reboot.

If this is not working you to replace with geniue display.

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I'm having the same problem with an iphone 6. When I first got the phone and assembled it, it worked fine. Someone had it apart and didn't replace the flex cable shield. I ordered one, put it on, and now all I get is a backlight. I've tried hard resetting it and all that. Itunes is reading the phone too and it also makes all the startup sounds and the iPhone lady will talk to me when I tap the home button. Is the new screen bad somehow possibly?

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Unfortunatelly it is a hardware issue. You need to replace fuse on the motherboard.

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I have exactly the same problem with an iphone 6 plus. Replaced a working cracked screen with a new one (used my camera, homebutton and backplate. When I switched it on the new one had a backlight but nothing on the screen except a bit of light. Put the old screen back on and it works ok. Returned the screen and bought another one from a different supplier with the camera and backplate already fitted and exactly the same issue! Is this coincidence I’ve had two defective screens with the same problem or is it something else?

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This is the exact problem I’m having with my phone.

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So the old screen works and the new screen doesn't?

What does this tell you lol

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Not what im asking for.. Know that it might be broken, but im asking what went wrong, since it worked before i reassebled the small parts..

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sorry, check backlight solder is good. and make sure the connection that the solder gets power from is good (can't remember on iphone 6)

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i was told by a professional that the logic board is most likely fried:(

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Heres a professional telling you its fixable. So your professional isn't so professional anymore.

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LOL bro 100%

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I have the exact same issue on my old iPhone 6 (dropped in water, cleaned with isoprop alcohol, got no sound issue but works properly) : I ordered 2 different screens from 2 different Aliexpress seller : the screen stays black if I connect it before turning the phone on. If I switch the screen after turning it on, the backlight turn on but there is no display.

I haven’t tested the two screens on another phone but they seem both deffective

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Hey guys,

I charged my iPhone 6 and removed at night, in the morning it doesn't turn on, i tried hard reset but it doesn't want to work, it had no display but the backlight is on, so i disconnected the battery adapter and reconnected it, and the problem was gone for About 2 months, but it decided to return, the iphone didn't fell or was damaged by water, and i tried my first solution about the battery adapter, but the apple logo appears for 4 seconds before fading away into darkness, can anybody tell me what's the problem ?

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