Chosen Solution

I replaced couple of T-con board and this is not resolving. is this Panel issue or main board issue ?

jagadeesh siva it is most likely the main board since you already changed the T-Con board. You want to go ahead and post some images like it was suggested. Panel errors usually do not manifest themselves with lines all over the screen. It is possible, just unlikely. Do check the interconnect cables. Check for tears and corrosion at the connectors.