There are a few things that you might try based on what you posted.
What are you watching that isn't passing through? The TV isn't going to act as an optical pass-through for every connected device that support 5.1. Those should be separately connected to your HT system, and if the receiver is looking for a 5.1 signal only, then it isn't going to find one, with the exception of the tuner with a 5.1 broadcast.
If the test tone is working, then post what kind of devices you're using that aren't passing audio. The Dish/cable/sat boxes will generally allow you to pass 5.1 optically, even though there is HDMI connected, if that's the device you're going to be using most with surround sound. The audio settings in that device (Dish, for example) would have to be changed to reflect both optical output and 5.1. But it can usually be done.
Hello, and thank you for any advice and help!
I have a new Samsung HDTV (PN50C550G1F) connected to my 6(ish) year old KOSS Home Theater system via optical cable. The whole set up is as follows:
-Dish network box hooked to TV via HDMI
-Xbox 360 hooked to tv via HDMI
-Optical cable from TV to Home Theater (for surround sound).
The home theater is a DVD player, tuner, and has Av1 & Av2. I have the AV1 channel hooked up to the tv to use the optical cable. I get no sound from the TV to the home theater when I set the TV to "external speakers." Once in awhile I hear a quick "crack" or "pop" but no sound. The red light is on in the back of the tv and home theater. Light comes from both ends of the cable.
When I go to the self test on the tv it plays music perfectly through my home theater, but when it goes back to the normal tv mode it plays no sound at all. So the sound works great for the self test but nothing for normal viewing. This tells me that the cable is good and the connection is set up correctly. Furthermore, if I plug the optical cable from my Dish box to the home theater I get sound as well (not surround because the HDMI interferes with that, but I understand this...). Regardless, the sound works which again proves the cable is good and the connection is correct.
So I am very confused as to why the tv would play the music via the self test through the home theater but not the standard tv sound. I have called Samsung and they could not help me. Someone for their level 2 support is supposed to be calling me tonight, but I would like to resolve this issue myself if possible. Any and all help would be greatly appreciated. Thanks so much!!
PS: The weirdest part is that when I first connected the optical cable 3 days ago I got sound from the tv to the home theater when I set the tv to external speakers. I then had to wire up the rest of my speakers to the home theater, but did not touch or change the optical cable. After wiring the rest of my speakers to the home theater I lost all sound from tv to home theater, again except for the self test music.