[MrGelowe]

I have to use component cable to hook up my cable box to the tv and I also use HDMI cable to connect my ps3 to the tv and mini HDMI to connect my desktop to the tv. Recently I got a pvr and read in the booklet that I should not have component and HDMI cables connected to the tv at the same time. I did not pay much attention until I noticed light purple lines moving through the tv screen. When I disconnected the HDMI cables, picture went back to normal.

The thing is, previously I was using 3 port 2 cables (yellow, red, white and red, blue and green) + HDMI (ps3) + mini HDMI (pc) and the lines would not show up. But when I tried 5 port component cable + HDMI cables, I got the lines. So I went back to using 3 port 2 cables for the tv. But recently sometimes I get those lines on the tv even when I use 3 port 2 cables. So now most of the time I disconnect the HDMI cables.

So what I am getting at, what is going on? Why is it happening? Is it a common thing? Is there a fix? ( I just can't seem to find any info on this. All I find is component vs hdmi comparison.)

[MLStrand56]

MrGelowe, on 30 November 2011 - 12:18 AM, said:

The thing is, previously I was using 3 port 2 cables (yellow, red, white and red, blue and green)

Yellow = Composite Video
Red = Right Ch. Audio
White = Left Ch. Audio

The RGB (Red, Green, Blue) cable is Component Video. Each connector carries a seperate (Red, Green, Blue) video signal, that is combined in the TV. A RGB cable prevents each signal from interferring with each other. NOTE that RGB does NOT contain any audio signal. So you will still need the Red (Right) & White (Left) audio cables connected.

Why would you use Composite video AND Component video. It sounds to me like your Composite video (yellow cable), is conflicting with your RGB (Red, Green, Blue) video signal. Try disconnecting the yellow (Composite) video cable & see if that clears up your picture problem.

You should have no problem using both Composite & Component video "IF" they are going to different video (Video 1, Video 2, Video 3) input connections.

MLStrand56