Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Ok until it wasn't.

I purchased the Coby boom box about four years ago. I liked the combination of CD, CDRW, CD-MP3 and USB capability. The radio manual tuning is way too touchy. When a USB drive is used the folder navigation is nearly impossible. An MP3 CD has pretty much the same problem. I liked the compact size and the sound quality was acceptable. We used it happily until the box quit reading CDs. End of story.