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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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Brightness issue with high copy screens

Hi.

Has anybody had any issues with using high copy screens for iPhone 6. We have had two IPhone 6 come in both in bad shape with nothing working. In both instances a new screen sorted the problem but a week or so later clients complained of the screen going dim and not brightening up. I have put a known good original screen back on and have changed the proxy sensor cable with no success. Has anybody encountered this before. These phones were both months apart (one screen was used on my personal 6 and is still working fine.) I'm wondering if it's the screen making this happen or if the phones may of been damaged during there falls.

Thanks

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This is a belated answer so hopefully it can be of use to folks who search for and find this question.

If the screens are dim and won't get any brighter even though the brightness scale is moved up, then that is usually caused by a damaged or loose coil in the backlight circuit (L1503). Now in your situation, it could be caused by the impacts the individual devices sustained over time or it could be caused by low quality screens drawing too much current and causing excessive heating of the coil, potentially damaging the coil.

Situations like these rarely happen in a vacuum though so it could be a below spec coil matched with below spec screen. Still, the odds of you getting two like that in a short time span seems remote unless the screens were really poor quality.

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Lee will be eternally grateful.
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