More than likely, it's the color wheel. Samsung replaced some circuit boards in my set to help with the sound sync problem, and while the tech was here, I asked a few questions regarding that very subject. There are something like 4 fans going in there to disipate the heat. However, they're all very quiet, and it's the color wheel that makes most of the noise. That's why, when you turn it off, that sound stops shortly after the shut down, but you can still hear other noises coming from the fans until the set has completely cooled down.
I can hear the color wheel at anytime the soundtrack is silent, or if the sets on, but nothing is playing. At first I thought it was going to be a problem, but I very quickly found that I didn't notice it unless I listened specifically for it. Most of the time there's some kind of soundtrack, voices, music, etc. going so you can't hear it. I think we all have different tolerances for this kind of thing. You'll have to judge for yourself if you can live with it.
Rich
PS the circuit board replacement seemed to fix some of the sound sync problems, but not all of them. Also, some of them are source related, so I can't expect the set to fix those.
I can hear the color wheel at anytime the soundtrack is silent, or if the sets on, but nothing is playing. At first I thought it was going to be a problem, but I very quickly found that I didn't notice it unless I listened specifically for it. Most of the time there's some kind of soundtrack, voices, music, etc. going so you can't hear it. I think we all have different tolerances for this kind of thing. You'll have to judge for yourself if you can live with it.
Rich
PS the circuit board replacement seemed to fix some of the sound sync problems, but not all of them. Also, some of them are source related, so I can't expect the set to fix those.
