Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good for 3 years and then it broke.

I was very happy with the unit for several years, until the pivot where the TV comes down loosened up and eventually, detached.I took the unit down and opened it up an saw that the pivot mechanism attaches the screen to the unit with four little screws. If I would have tightened that screw in time , everything would have been fine. But when the screen detached, it must have put too much force on the wires and now there is sound but no picture.