Hi, I finally got my pw5 set up this weekend. Im so happy with it!! The only thing is, when there is a large amount of black on the screen it seems to make like a high frequency noise, its hard to explain.... Kinda like when a cd/dvd is being read by a drive. Its not a whirring sound but more like the sound the laser makes when reading. The more black area's on the screen the louder it is. Its not unbearable or anything like that, its just wierd. I didnt think they made any noise.