Hello , my name is Jack Perhaps I can help you with this problem but first i would have a few questions;
Is that line horizontal or vertical ?
Is it somewhat transparent or does it cover what is behind it ?
it is a vertical line and it covers what is behind it
it has no affect on it
O.k then I can see that this is not your first tv repair with us , so I won`t ask if you want to look into this yourself :)
Do you have the back cover removed ?
it is removed
O.k then can you locate the t-con at the back of the panel , in the upper center ?
Picture at the link below;
You can see 2 connectors at the top and one at the bottom , you may have to remove a shield that covers it and re-install the screws that hold the board in order to have access to the top connectors.
Try to push on the connectors at the top while the tv is working or pull out those cables and re-insert them while the tv is off to see what it does.
I`ll be in standby
there was no affect when i unpluged the cables or when i pressed them
O.k then although it is often caused by bad connections , in this case it would look like your t-con is the culprit.
Does your t-con looks exactly like the one in the link above or the one in the link below;
yes it does
If you mean the link below then you can buy it directly there but if it is the link above then they do not have it in stock and I could see where you can get it.