I have a 32 inch LG4000 with built in DVD. Poor Audio

there is a pin hole on the dvd/cd player simply put a pin into it and ur cd/dvd door will open.

The flying head is dirty. Open the unit and clean it with isopropylic alcohol or similar with a smooth cloth like the same used to glass clean.

The main board is having issues eventually the sound will drop out altogether. Replacing the main board should solve the issue. You can get the main board from www.tvrepairworld.com

Newer sets are a lot more picky about the signal and will show all kinds of noise etc---even on cable a number of the older sets have a better picture.

that could be the Speakers having an issue or the audio out circuit has an issue, Probably a main board issue

try one of these links.

Download Lenovo G450 Windows XP Drivers

Drivers Downloads - FileHippo.com

hope this helps

You may want to make sure it's a Yamaha by seeing how the TV displays when connected directly to a cable box or DVD. Also try different HDMI or component inputs to see if it's something in the input connection you're using.

If you have a s-video port it wiil connect to most cable and dvd players ect, the quality of picture and sound will also be improved.

If the input to a HD tv is not in HD format the tv won't display an image very well. Be sure your input to the tv is compatible with the tv's technology for optimum performance quality Also re-check the input source (such as converter box, dvd player, etc..) and be sure you have the correct input/output ports connected properly. Try to reset all yout tv settings back to manufacturers defult specs. When an input signal is sent to the tv most modern tv's have software built in to select the proper format to display the input image. There may have been a mismatch communication error when your tv software tried to "handshake" with your converter box input signals from its firmware. So try a reset solution and re-connect the tv without the converter and see if that helps. If not e-mail me and I'll determine if the tv needs technical servicing.

This is just a guess but the dolby sound on my system is bad however when I switch to regular "stereo" sound it improves. See if your audio set up has a choice of sound and try them all.