iphone 6 long screw no image.

Hi everyone
I am getting these days a lot of iphone 6 with long screw damage. It is under the left screw holder of the metal shield. I carefully remove the first layer(ground). There are a lot of traces under the screw. There are 3 or 4 bold traces and 6 very thin traces. If they are damaged screen, power key proxy sensor etc are not working. I solder these traces together but screen still not work. I am sure i make them properly i check contuniuity. They are all proper. But screen is not working. Have u ever manage to get it work again after such a damage? or is it not reparable. I measured one of the bold lines is pp5v0 lcm connection. Is it possible that display pmu burns because this line has shorted to ground? I would appreciate if someone share his exoerience. I want to know if it is possible to ne repared. I wasted a lot of time on this. Thanks