Toshiba TP55H60 55" Rear Projection Television "definition double number line" Questions

line is off from the rest of the picture but the TV is still working. I took out the back panel and was not sure which circuit board to unplug to work on this STK part. Some boards have a double stack

double or triple over one another. I am using a Verizon Fios Hi Definition cable box connected to the TV through audio/video cables. There is no slot for an HDMI cable line. The tv problems known as a