I purchased this box on eBay and found I had used the wrong part number. The previous owner of this box stated that the box “is used but in great working condition.” That being said I will accept a return and refund the full payment if the box does not work for you. When I did get the correct box the only thing I had to do was “pair” my remote to the replacement box. Basically you hold down the arrow and pause buttons on your remote for 5 to 10 seconds and you will see a message on the tv screen saying that the pairing is happening. Everything worked fine after that. Feel free to contact me if you have any questions.