Sam Wants to Sell His Stereo System Because One Side

Essay

Sam wants to sell his stereo system because one side of his amplifier occasionally doesn't work properly and the cost of repair is so high that Sam wants to get a new stereo.Otherwise,it works well,and the sound quality is very good.Sam places an advertisement in the newspaper and Bob comes to look at it.Bob tries it out and likes what he hears.Then the following takes place:
Bob: How does it work?
Sam: Listen for yourself.Isn't that sound great?
Bob: Yes it is.Have you ever had to have it repaired?
Sam: It's never been repaired; it's just as it came from the factory.Try the CD,the cassette tape and the tuner.You'll see they all work.
Bob: Playing this cassette tape,all of a sudden it doesn't sound right.I know a lot about stereos and that just doesn't sound the way it should.
Sam: Try the CD and I'll get another tape.
Bob plays the CD,then tries a different cassette,and then Sam is relieved that the problem does not recur.Bob spends an hour or so playing and testing the stereo system,and then they reach a deal.Bob discovers the problem after he gets home.What remedies does he have?