Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do not buy this unit, you get nothing but aggravations

I have had this unit for 4 months now. It works erratically. Lately it has been getting into a hang state where you can do anything with it, can't power it off or on, can't change channels,not from the remote, not from the buttons on the unit itself. Sometimes it gets OK after I physically unplug the unit. Other times even this doesn't help. This is a product that should have never seen the light of day.