Summary: It suddenly stopped working. On inspection, I saw the fuse was blown. In spite of replacing it with several kinds of 2A250V fuses, I could not get it to work. On searching the internet, I found out that there are many people with the same issue.
Summary: It's the worst system I've ever purchased. The speakers have different sound levels. Turn the control to increase volume and it reduces. Every time it is turned on it has to be reset. The normal volume level is only satisfactory when using earphones.