Instruct: Classify Amazon reviews into positive or negative sentiment
Query: power adapter fail

I have had this product for about 3 weeks and the cassette adapter still works (occasionally it takes a second try to make it load but not a real issue there). My big complaint is that the power adapter stopped working within the first week (the light still comes on but no power makes it to the cd player)! The main reason that I bought this kit is because it is the only one I saw that came with a power adapter so I would not have to burn through batteries just trying to listen to cds in my car. So now I am back to burning through batteries and am so disappointed that I will think twice before purchasing another Coby product.