Black screen of death
So I got the "black screen of death" on my iPhone 7 128gb silver on iOS 10.3 while casually using my phone the other day. The screen faded to black slowly and wouldn't show again, I could feel the home button vibrate so I knew it was still on but the silent switch doesn't make the phone vibrate. so I tried soft reset- didn't work, tried letting it die then charging- didn't work, tried update- didn't work, finally tried restore in both Dfu and recovery mode didn't work, so after that I assumed maybe it was the LCD so I tried a new one that didn't work either.
Now I'm stuck with a paperweight iPhone 7 that is less than a month old, I would contact apple but I was told warranty won't cover it anymore since i opened it to try a new LCD. Is there anything you guys would recommend? Any and all help is appreciated, very little info about my problem online. Thank you for your time.