Chosen Solution
I recently had my screen replaced and a few days later, the lcd froze and looked like it was fading black from top to bottom going towards the middle. I’ve never seen this before. I’ve tried restarting the phone, checked the connections and tried a new screen on it and all its giving me is that the back light works but the lcd isn’t. Can anyone help me with this?
Sounds like a faulty display to me. Bring it back to/request a replacement from where you got it
As long as you’re getting full backlight but no image check chestnut ic. This provide voltages to touch and display. It is most likely not gpu related. I would still inspect coil for cracks/damage as it might not be putting enough voltage through to give full backlight to image. If you tilt the board and look under chestnut (u1501) you might be able to see under ic for cracked solder balls. I normally don’t recommend reflowing but you could put some flux on the ic and heat for about 20 seconds at 355 if balls underneath look cracked. Also check voltages out from u1501.
