Electronics Repair Questions? Ask an Electronics Technician
Hello and sorry you're having problems. Issues which show up as a distinct difference between the left and right side of the picture (generally a double image, etc.) are generally caused by a faulty LCD timing controller (T-Con) board. This is on average a $200 repair on this set and you can use either of the following links to locate a shop in your area. Please keep in mind it does not need to be a certified "Samsung Service Center" as this fault is common among all brand and model and any certified repair shop can tackle this.
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