E980 Bricked or Maybe not

I bought a E980 that the seller CLAIMED needed a new screen. When I got it I powered it up and the screen would be grey for a few seconds then black. I have another e980 so I stuck my good working board on this "thought to be" bad LCD. Well the screen is fine since it worked fine with my board. So I put the BAD phone back together. I noticed there were no start up chimes or anything when started and the home button lights didnt seem right. So I followed one of the tuts on here on flashing back to stock with tot method. Well it boots up with start up sounds but still just get the quick grey glow then its black but its powered on and I heard the start up chimes and can here response when I touch the screen. I have tried just about everything I can think of and have tried several different things on this board and not making any progress. Anyone have any idea? TIA