HDMI Cable issue

[John712]

i was going to ask it in Ralphs thread being theres already a thread on it (in a way) but didnt want to high jack it

i bought a new plasma and got the HDMI Cable, not on my plasma i got 4 places to put the cable. 2 in the back and 2 more on the bottom where i can reach without hac=ving to remove the tv off the bracket.

when i plug it into either one of the places where i can i say about 10 or 15 minutes later the tv gets white thick lines through it, once i unplug it, it goes away, it did it to all 4 slots.

any ideas.? maybe im putting the HDMI Cable wrong from either the Cable Box or DVD Player? or should i tell the take tv back and give me a new one, i only bought it like 2 weeks ago.