usually we do get time frame but does not mean it will get fixed within given time frame. sometimes it takes a lot more and some time is really quick. however, you might have different problem then others since you are having issue for a week.How long does it take to do maintenance? Because mine has been going black for a week, then replaying scenes 2-4 time. I then change channels and then go back. That sometimes helps. Seems the system is going down hill instead of maintaining.