Horrible screeching sound - why?

Horrible screeching sound - why?

Hi, it’s a Bose Wave radio/cd player I have, but the model didn’t come up, so I had to choose this category. It has some scratchy sounds emanating from the rhs speaker, then it’ll play cd or radio for about 10/15 seconds, then it starts a dreadful screeching sound that curdles the blood and I have to pull the plug out quickly. Does this sound repairable and if so, is it a beginner’s job and what parts would be needed please? Thanks for any advice.

ANSWERS: