Apple logo shows shortly the backlight fails
I got an iPhone 6 into my shop today. The phone has had a screen replacement (and the battery removed, and slightly pierced). 2 months later the phone only boots to the apple logo for a split-second, and the the backlight fails.
I have noticed that if I hold the powerbutton pressed, the logo will show 5-6 seconds, and the the same.
Could this be long screw damage?
Have tried a new battery, and a new screen
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