Play PSP on your TV need help

[kistanleyki]

I have a Sharp TV, kinda new
it have a blue,green connector on the back

My psp can play videos on my TV
but when I play game, the screen is split into two
its like playing on two small TV, one left one right with a straight line dividing in between
it plays the game fine, but its really annoying to c double display

anyone know whats going on?
I tried to mess around with the cable, options settings, tv settings

plz help!

[Angelo]

Hmmm... check your PSP video settings. Do you have any plugins installed?