I haven't encountered this problem with my 42" LCD TV nor with my 23" LCD monitor. My monitor doesn't have speakers, so I connect external speakers to the line-out. So, if you can't get sound from the TV speakers, you may try this approach. If your TV has no line-out, you can also connect speakers to the headphones port of the A700. It will still work even with HDMI connected to the TV. Good luck.