IF THERE ANY CONFUSION AND /OR LACK OF UNDERSTANDING HOW TO FIX TV. PLEASE CONSULT WITH OUR SERVICE. ALL BOARD are tested by certified Tech and guaranteed 100% to work. Please be sure that the Part Number and picture on your main board is EXACTLY. There are possibly several different boards for each model TV. Shop confidently with our 100% feedback. We accept 30 days return of order date. We understood sometime it difficult to diagnose the problem. Please message us with. The reason for return. Do not return without return authorize number #. For return, Please package well and return the original part. All parts have a unique mark and identifier on it.