For a while i have noticed that when i change channel on my Loewe Mimo, there is a brief but audible static crackle coming from within the set. This doen't really bother me but i am now noticing it during normally viewing. Like on a channel change, it happens whenever the picture changes from something relatively bright to a dark on a full black screen. Depending on the difference in brightness of the image between the transition, sometimes it happens and others not. I thought that it might cure itself as the set settled down but it has not. Any ideas?