Liteon LVW5026 wide screen problem

I have just got a liteon LVW5026 the problem is I cant get the TV to open to wide screen that I’ve recorded from the digital cable decoder.
If I play a pre-recorded DVD in it opens in 10:6 with no problem, and if the recorders turned off there’s no problem. But as soon as I turn it on the picture goes to 4:3.
I’ve spent hours changing settings and swopping scart leads around, but it has made no difference.
I wonder if anyone can help.