Today when I turned on my TVOnline box it would not show video through the HDMI. The TV recognizes rthere is a signal but it is only a blank/black screen. I thought maybe the HDMI cable was maybe bad so I switched it. Still no picture. So I went to another TV/another HDMI cable and still no...

Hi. I'm a newbie in every phase of the word. I've been mostly reading and finding what I can do with my recently purchased mag254.