I have picture but no sound. We can hook it up to a surround sound system and hear it but no longer own surround sound. Need to have sound play on its own through TV.

You need to change the surround sound settings. This is on page 29-30 in the instruction manual that comes with the sysyem. You can download a copy in pdf format here: http://resources.jvc.com/Resources/00/00/95/LVT1147-001C.pdf

Basically do this:

1. Play the dvd.
2. Select Audio mode on the remote control
3. Hit the "Surround" button repeatedly until you hear all the sounds you expect to hear.
Go slow inbetween hitting the button to make sure the sound is playing.

This reson you are not hearing any "TV AUDIO" through your RCA surround system would be due to your tv sound output not being connected to an audio input into your surround system. You can hear DVDs,CDs and radio possibly mp3 if connected, as these are built in to the amplifier which the speakers connect to.
If the tv has a Line out (via phono plugs) and NOT via headphone out, connect it to an audio input on the RCA surround system. If the RCA has no other available inputs, well....there ain't a lot you can do but watch CSI with the sound from the TV and then Star Wars (for example) through the TV and Surround system.
Best Of Luck

Hook your satelite receiver to your TV. Then run from your TV audio out to your surround sound system. This should make your surround sound system work with anything your TV is playing.

cable box needs to be dolby digital to allow surround sound to work

i need to know how to hook up my home theater to my TV and Dvd.

Sounds like it's just in 2 channel stereo mode, only 2 speakers working out of 5 and a sub, look for a selector switch for switching to 5.1 surround, as far as the no video problem try replacing the cable for the video connection. 

If you have a surround sound system, (amplifier and speakers), run the DVD speakers out wires to the amplifier IN. Thi way, you don't even need the TV speakers.

If you have direct cable into the television, you will need to use an audio output if available on the back of your set into your HT system.

If you are using cable w/ a cable box you have two options. You can still connect everything directly into the TV then reroute the audio to the HT system... or, you could hook only video to the TV and audio from the cable box to the HT system. Really up to you.

How can I get surround sound to work on my tv. When I pull up my menu and go to audio the SRS Trusurround XT is not in bold so I cant figure how to connect it so I can have the surround sound coming from the system and not from the tv. Please help.