Watching TV and went through house, when I came back in to the room I noticed TV on but no sound. Checked cables, mute, and other TVs n the house. Other TVs have sound but my Spectronic does not! HELP!!!!! My 4yo is wearing me out wanting to hear SpongeBob.

After a board replacement, a firmware update is necessary to all LCD TVs. Contact the authorized service center for Sony. If you are confident, you can do it. If you wish to get some details; check the site linked here. Pull up older posts. https://electronicshelponline.blogspot.com/

You need to turn on the cable box again. Make sure to select the right source again for your tv.

You should take the TV back to Bestbuy when you get the chance... Tv could of came defective from the factory. They should be able to exchange for a new one if you explain the problem to them.

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I suggest you check the satellite receiver first, you can use the component or HDMI cable for the satellite receiver to check it. If still no sound, the TV main board is defective.

Since it is a rear projection and the screen is black and there is no sound, I decided it was way past time for a new one. If I had to replace all 3 bulbs, it would be approx. what a new one would cost anyway.

I am shopping for a TV.

check the sound board.that should help

you mean no picture just sound?

lost high voltage...... check Horizontal output transitor and flyback.

haunted house. contact an exorcist

These are the answers straight from the dell manual. Ensure that the audio cables are firmly connected to both the audio input connectors on your LCD TV and audio output connectors on your PC or Video player. If on certain TV channels you receive a picture but no sound, this means that you do not have the correct TV system. Modify the SYSTEM setting. Check if TV volume is turn off of muted Connect the audio cable securely Audio cable is connected incorrectly Verify that the audio source is selected correctly in the OSD