Originally Posted by kellybob
Pure Audio turns the back light off on my TV while the Energy Saver screen saver does not.
Current firmware, HDMI 1.
Originally Posted by David Aiken
The job of the screen saver is to prevent burn in problems from a stationary image on your screen. It replaces the stationary image (a paused movie or the home screen for example) with a moving image.
Pure audio turns off video output when you don't want it, such as when you are listening to music from a CD or streamed from your computer, and some think that it may improve sound quality.
So they do different things because they are intended to serve different purposes. Your Oppo is behaving correctly. The reason the backlight on your TV turns off when you engage Pure Audio is because there is no video signal so nothing to display and the only way your TV can display a black screen is by turning the backlight off. The reason the backlight stays on with the screen saver is because the screen saver is an image and the backlight has to be on to display the image.
Well... I definitely do not have the technical expertise to give much of an answer, but just to add to the discussion....
On my 103 -- in order to prevent burn-in on my plasma when I'm listening to music (CDs, or WAV files on an attached USB hard drive) -- I have HDMI 1 out connected to an HDMI splitter, which branches to HDMI inputs on both my 58" 1080p plasma and a 10" backlit 1080p LED monitor. The splitter allows either one of the two monitors to be on individually, or both can be on at the same time.
Obviously, I'm using the Oppo in "split" mode, with its HDMI 2 output going to my AVR.
Regardless of which monitor or monitors happen to be in use, once I've selected the music and started it playing, I always activate the Oppo's Pure Direct button, which "blackens" the monitor(s). Along with helping to prevent burn in, I do this simply because I find the music playback-screen to be far too distracting.
In the case of the plasma, Oppo Pure Direct causes the screen to go completely dead black, as though it were actually turned off. By way of comparison -- because of the way I have the plasma calibrated -- when the Oppo Screen Saver is on (or when the black-backgrounded Oppo Home Screen is being displayed), its black background is not quite as black as when the plasma is turned off.
The little LED monitor's screen, however -- while it does go "black" -- remains "backlit", causing it to actually be a fairly bright "dark grey"... and that grey is the same intensity, whether what's being displayed is the home screen, the screen saver or the Pure Direct "blank" screen.
I'll leave it to the experts to explain what, if anything, this actually means.
I don't ever use the Energy Saver function, incidentally, so I can't address that issue at all.