Hey guys, have a question about a Proscreen 4600 Endurance. We cannot figure out how to get it to go into sleep mode. I called Phillips customer support, and they said (after looking through the manual for a bit I assume) that they though it prolly be okay to just turn it off. This sounds really wrong to me, and an email to them came back saying that you can hold down the source button to put it into sleep mode. There are three source buttons, data 1, data 2, video, and none of them will put it into sleep mode. Any help would be appreciated.