How do I adjust the sound on the tv. The back ground sounds are louder than the speaking part.

If you can hear the music in your PlayStation 3 (PS3) but people speaking sounds faint and echoed, there are a few things you can try to improve the sound quality:
1. Adjust the audio settings: Go to the PS3 menu and select "Settings" > "Sound Settings" > "Audio Output Settings." Choose the appropriate audio output settings for your system and TV or monitor, and make sure that the correct input channel is selected.
2. Check your connections: Make sure that all of your cables are securely connected to the PS3 and the TV or monitor. If the cables are loose, this can cause poor sound quality.
3. Check the game or movie settings: If you are playing a game or watching a movie, check the audio settings within the game or movie to ensure that the sound is optimized for your TV or monitor.
4. Adjust your TV or monitor settings: If the sound quality is still poor, adjust your TV or monitor settings. You may need to adjust the bass, treble, and other audio settings to improve the sound quality.
5. Use headphones: If none of the above solutions work, consider using headphones to listen to the sound from your PS3. This can provide better sound quality and reduce background noise and echoes.
If you continue to experience problems with the sound quality on your PS3, you may need to contact Sony customer support for further assistance or repair.

Take care and have a great day! -Alex

Scene Select: Allows you to easily adjust your TV to the most suitable picture
and sound settings based on the scenes for the best quality result for the
contents genre you are watching (page 20 of your manual).

Additionally do not place the back closer than 3" to the wall, (stand,) 4" on either side and nothing closer than 12" from the top of the TV.

This is mainly for dissipating the heat that the TV creates, but this will also impact how the sound travels thoughout the space.

That has nothing to do with the TV. It depends on the input signal received. You can perhaps adjust the graphic equalizer and control this to certain extent.

get the graphical user interface up on the TV,and adjust your sound levels.some amps also have supplied microphones for setting up their sound levels.you want about +8 DB on centre channel

Most likely a capacitor going bad. If it gets louder after the TV had warmed up for a while, remove the back and blow all the dust off the circuit boards. While you're in there, look for a capacitor (google if you don't know what that is) right next to or touching another component, especially a resistor. Carefully bend it away a little to reduce heat transfer. If it's not a heat-related issue, it'd likely cost more than the TV is worth to have a repair shop fix it. Consider running the audio through a separate sound system. If it buzzes even with the TV volume turned all the way down, disconnect the internal speakers.

SOMETHING IN YOUR PCB BOARD WAS LOOSE CONNECTED. REVIEW THE THINGS RESOLDER THE PCB BOARD IN AUDIO CIRCUIT.

Doubleclick the little speaker icon in the taskbar and adjust sound, mic, line, gain, etc properties to suit. You may have to hit the Adv button to do more.

in the menu there should be some type of set up for this, it will most times show you on your screen a room with all the speakers in it and ask you to hit test then it will shoot a white noise type of sound around to each speaker and ask if you heard it, there are then adjustments you can make for the front, rear, and side sperkers independent of one another.

see if your audio setup is on ac3 mode, select stereo mode and see if it works!

The sound that you hear is coming from the sound detector not working or not receiving any audio. If the set is set to a second audio (SAP) program this could be you trouble. Some programs are broadcast this way. (such as Spanish for Spanish speaking people. Check you audio program settings.
Stargazer