My sister gave me a Samsung UA40H5303 from Brunei. I used the automatic channel programming on the TV and there is no audio. Other sources (USB, HDMI, video in) have audio. I can watch cable tv but thru DVR TV tuner. My cable is Destiny cable. Is there any other setting or set-up step I should go thru? Manual is basic and can't find much. I saw some audio channel options in the Broadcast menu and tried them all but still no audio. I hope someone can help. Thanks.