Red screen of death iPhone 6+ "please help me"

I have an iphone 6 plus (jailbroken) with a red screen of death. This happened after a screen repair... I have tried recovery mode and all that stuff. But it will not boot, when it tries to boot the red screen just pop up and it tries again. When i try to update or recover it, the thing flashes red and i get an error on iTunes. I have also tried disconnecting the camera cables. I also tried to send it in for service on a applestore and it just got returned to me when they found out the screen was not original. (Maybe try again with the original one?)

I don't see a way to fix this, i have tried for more than 7 hours (with no luck). I am considering selling the thing for parts and just use an old iphone 5 and then buy the iphone 7 when it drops.

This is the second time is ask this question, still no luck.

Please help me, i am begging for this phone to work. All suggestions are appreciated. :)