This board has been fully tested and proven working. Please make sure you are buying the correct part. The BN number on our board should match exactly with your original part. If you are unsure if this is the part you need, please contact us and we will try our best to advise you. Please do not buy this part to experiment with your TV as we will not accept returns. 
If you have any questions or queries, please contact prior to purchase as we do not accept returns 
Buyers are welcome to contact us via video call so that they can see the board working. Please remember that no returns will be accepted