You know you don't know till you try it. Sometimes it's not that but a connection.

But first, there are LETHAL DEADLY voltages in there. Any one that goes inside accepts all responsibility since it's not user serviceable.

I keep a video handy that is not specific to any model but I've found this to cause lines and discoloration. Only your new techs dismiss it. Watch the repair. No parts involve but a little cleaning and some material that is a staple of TV techs today. Video follows.