Chosen Solution
At first…here is a video I made to demonstrate the fault: https://youtu.be/m8bLkwm9hJc And I also want to say at first, that I already changed the Display and the battery but the following problem still exist: I have a problem with an IPhone 6. There is a 50/50 chance the display starts flickering or not when turning on the display. I think it’s the backlight. If it doesn’t start to flicker after turning on the display it’s all okay…but if it starts flickering after turning on the display, it will not stop until turning off the display. So it just starts in the moment when the display flashes on and never comes when the display is already on without flickering. So does anybody has an idea, what’s the problem here? What part can I check or which IC /Filter / ….. do I have to change? I hope someone can help me. Thanks :)
So this flickering occurs with both the original screen (is it an Apple original part) and the replacement screen? If so, then I would focus my efforts on the backlight circuit, including the physical connections. Double check the connector on the logic board and look for debris or broken/damaged pins. Failing that, I would verify the condition of the filters on the backlight line. Check the anode filter (FL2024) as well as the cathode filters (FL2025/FL2026). You will need to probe them for continuity (they should read as short on a multimeter). If that looks okay, you can check upstream to the driver circuit. If you don’t have the tools or skills, then you will need to find a repair shop that does micro-soldering repairs.
Try to change the brightness of the phone. If you dont see much variation then replacing back light coil should fix the problem.
Did you solve this? I have also the same problem. Display is flickering maybe 30 % of the cases when I light it up. If the flickering is not starting when it is lighted up it will not start until next time I light it up eventually, when it occours touch will respond bad or maybe totally stop respond. I have opened it and while it is flickering on the screen I can see between the metal shield and the display that it is constant light which is not flickering.
Near to me, replace it with a orgnal panel.. solved in my case..
hello every one … in my opinion this problem has related to the Auto Brightness sensor just behind the LCD just by the selfi camera …try to change camera/mic/light sensor/proximity FPCB (felexible printed circute board) and check it… it should work fine after changing that ribbon cable … please tell us if its work for you…
