Or you have used too much detergent.;-) it's an ordinary washing machine which has broken down.
;-) it's an ordinary washing machine which has broken down.
I am pretty sure what Bob was hinting at is that you probably want to write "the machine", not just "machine". In some contexts, your version is OK.
If you have a question about the English language and would like to ask one of our many English teachers and language experts, please click the button below to let us know: