iPhone 6s lcd goes black after somekind of short,

Any fix on lcd black screen? it happens when I remove the LCD, but when I connected it back. I forgot to remove the battery, then I heard a sound, then the screen turn black. It won’t turn back on. But, I can see the phone is on, when I connected it to iTUNES. iTunes detected the iphone 6s in my pc.

Do I need to replace the LCD alone or should I consider to a repair shop for repair? Or is this more than just a LCD problem that needs only replacing?