Page 1 of Thomson Dp900t Portable DVD Player 9" av out problem

I have just bought this model to connect to a screen in my car, and also a 3.5 jack to 3rca cable. I tried it out on my tv in the house but all i get is sound, no picture ? do i need a speciallised cable to enable the tv out, do i need to alter the system settings? please help if you can, i cannot find any website for this company to get support.

I can`t find a manual online but it seems that it only has an audio output - not video at all.
 Connectivity seems to be limited to audio out and USB only.