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Repair information and guides for the iPhone 6 that was released on September 19, 2014. Model Numbers: A1549, A1586, and A1589

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black screen and green vertical lines after lcd replacement

i have a problem after replacing lcd in iphone 6, it shows only black light and some of green vertical lines, digitzer dont work too. i dont know that my new lcd is working properly beacuse i bought it online and my cracked one is not working anymore. however backlight is working, so does vibration, so the phone is working itself, i can see the pattern of lines change when i press power button to power off device. any solves for this? should i try another lcd or i messed up something on logic board?(it was not my first repair, and all connectors look undamaged).

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Did you test the new screen before putting it on?

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I have seen this a couple times in our shop. So far my co-worker and I have figured out that it is some kind of short on the board, After market screens will show the greenish weird vertical lines. Choice screens show nothing, however the backlight is lit up. The 2 phones we have encountered with this problem were iPhone 6. Both customers used car chargers religiously. The black out issue only became a problem when the battery was disconnected, and reconnected after a screen replacement. We have tested fuses and found none faulty. iTunes recognizes the phone, screen is still black. Besides the 2 we have in the shop, I have encounter at least 3 more with this issue. Those 3 were fixed using Rec Boot, a tool to place a phone in and out of recovery mode. I put those phones into recovery mode, and when I kicked them out of recovery that fixed them and the screen came back to life. The other 2 we are still working on to find out answers. Have not replaced the backlight filter fuse yet. We will see...

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not rly, i was sure it works, however i got second one, but happened the same thing. im not 100% sure that new screens are working properly, i mean maybe the sold me broken, but thing is that second screen only shows only black light and green vertical lights

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kosa buena will be eternally grateful.
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