I've had this TV for about a year now and only use it to watch TV. It's only connect to my HD Receiver (HDMI cable). Recently, I occasionally receive a 'no signal' message on the screen when I turn the TV or when I'm watching tv.
I sometimes just move the tv back and forth or disconnect/reconnect the hdmi cable from the hd receiver to the tv. (I only use the tv speakers).
Today, I noticed that whenever I do get this 'no signal' on the screen, the digital audio out optical on the back on the tv flashes red.
What seems to be the problem and how can I fix it?