The backlight on my iPhone 6s is not lighting up
My backlight is not lighting up. The screen is black but will accept touch input. I have tried reconnecting the screen, cleaning cables, and wiping down the back of the screen with a DRY rag. This problem surfaced after I attempted to add a Glowing led apple logo. The funny thing is: it worked for about 15-30 min and then stopped. I removed the LED logo but the screen is still is not functioning. When I press the home button for the first time after turning off and on the screen, it flickers on then turns off. Any suggestions?