hazelhead,

First, I'm sorry to hear that you're having this issue, but glad to see you've got a repair on the way.

I'd always suggest the standard recommendation: If it makes a noise, shows a symptom, or displays something wrong, usually more use will not help, and perhaps damage something further. That advice usually does well, but without knowing what the diagnosis is, I don't want to suggest something that would potentially damage it further.

I'd say check with your technician first if the problem has been diagnosed. Until then, hold off.

--HDTech