Send us please some pics from the LCD connector it might have rust built in to it. It probably was unbuilt the first day and it started becoming a problem later. Can you put a flashlight on top of it? The backlight might be fried.
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=== Update (07/24/2019) ===
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Friend I have a confusion, this phone is exclusive to some carriers and the back is different from the others. Don’t know why but if you see the video it isn’t the same lemme find something else
Send us please some pics from the LCD connector it might have rust built in to it. It probably was unbuilt the first day and it started becoming a problem later. Can you put a flashlight on top of it? The backlight might be fried.