Got my AE500 replaced with a new one today. Old one had a dust blob which just weren't shifting so they swapped it out for a new one. Good news is new one has no dead pixels and no visible VB problem. Bad news is it's making a slight rattling sound as if something loose is inside when it is switched on. It sounds as if it's coming from near the optical block. At first I thought the filter was loose and was rattling with the air flow, but it's not that. But it is being caused by the airflow. This wasn't happening on the old one.