On Jul 19, 10:09 pm, "John" wrote:
I have a Sony music centre (Mini - radio, twin cassette / CD. Quite good
but maybe 15 years old). The CD seemed to have stopped working - it
displayed "No Disc" and made a clicking noise.

If you are able to remove the cover to get to see the lens, look at it
with a strong magnifying glass. There is possibly dust on it.