Origineel bericht door: jamesqb2001 ,
U1502 backlight IC was the culprit. Went through five of them from AliExpress which were all faulty, so beware. Bought one from a UK repair centre on eBay that uses the supplied ICs in their own repairs and it fixed the backlight. However, the phone now loops on the Apple logo continuously. I have no idea why. I’ve just changed Tristar but it’s still looping.