My daughter has a PX850 that is just over a year old. Yesterday the E and F below middle C will have a loud recurring electronic noise after being depressed for about half a second. I don't have a recording of it to upload, but could get one if necessary. Is this something that could be fixed by a reset or are we looking at a warranty claim? Does anyone have information about service in Canada? I read something on another forum in the US that indicated that there was inhouse service for a US warranty claim when it is a console. I can't imagine having to take the unit apart and then shipping it four hours to Toronto to be fixed. I am so disappointed. The piano had been so good, but this has turned me off totally!