What's the problem po, Sir? Wala po talagang issue yan sir as far we are concerned. We inform you that the item is second hand unit and even invited you to check the item personally. But in good faith, we sell the item, and you said to video the item that it is working before you buy it. The handler also video called you for demo. Since we are not expert on technical issues, we inform you especially gadgets we just sell as photocopier as we are told ng nagturn over po sa amin ng item.