Samsung DynaFlat TX-P2764 27" TV "comcast cable picture black white" Questions

...Comcast and didn't immediately show this black line. There appears to be white printing on it but I can't read what is says -- perhaps something in progress? CERTIFIED TV EXPERT HERE, follow this ...

...comcast unit. I was right. She yanked a video jack from the back of the tv. I connected it back to the tv, but now i don't have any color, just B&W picture. Is there any reset function on the tv? ...