Why can I get sound when I turn on dvd player and not when its just the tv

No special programming is required. Connect the DVD player to the TV using an HDMI cable. Note which input jack you used on the TV (example: HDMI 1 or HDMI 2, etc.) Turn on the DVD player and insert a DVD disc and play it. Turn on the TV and select the input you used to connect the DVD player (example: HDMI 1 or HDMI 2, etc.). You should now see and hear the DVD disc playing. Most settings are pre-set at the factory so everything will work without adjustment. However, both the DVD player and the TV have a Menu where you can adjust settings for picture, sound, etc. if desired.

follow this steps and fix it. God bless you

1. Check if the TV and Amplifier (if connected) is turned on and set correctly.
2. Check if the TV, DVD player and Amplifier are connected properly.
3. Make sure the TV, DVD player and Amplifier volume are not set to Mute.
4. There will be no sound output during Reverse Play / Pause / Step / Slow / Search.
5. If the DTS soundtrack is enabled in the DVD Disc Menu, but you are using Stereo Analog audio, the sound will not work. Try switching the soundtrack to Dolby 5.1 or PCM mode in the Disc Menu.

Check your sound settings on the dvd player should be pcm
Turn off dvd player and tv and make sure tv is turned on first

try the audio settings on the chanel you dvd player is on the tv

if u have placed your DVD next to your tv ... just maintain distance between then and check out

The sond you hear is the safety switch that keep turning tv off because a fault is detected.

While I could not find it in the manual, I found that you must
go to the menu, open Sound Options and set Speakers to "Fixed".

Note: If you turn off the Surround Sound or DVD player combination you must then go back to the menu and turn the speakers back to Televsion.

Did you turn on the input of the tv to receive 'external' input.? Did you plug the DVD into the right input?

Turn the sound down or off on the TV remote and only use the surround sound....

I can't say 100% but it sounds similar to the problem I had with the same model . The sleep mode in the on/off switch had gone bad and a new switch fixed the problem. It was about $42 to rtepair at my local electronics repair shop. Hope this helps.