EXACT same problem. Mine is in for warranty exchange right now. As mine is about 8 months old, only a warranty repair/replacement was possible. Only problem is that Philips doesn't handle their own warranties so I had to outsource it to another repair place that is taking forever! I mailed it in a 6 weeks ago and no word yet.

I wonder with all this talk about the TSU-7500 being discontinued, if that would have an effect on warranty exchanges?