Unable to turn off Xtrons D708 Safety Message

[xerophinity]

Does anyone here have an Xtrons D708? I got this unit on ebay for around $230 free shipping. Details here --> http://www.xtrons.com/doce/productdetail.aspx?pid=60

Not a bad price. Anyways, I got it all set up and installed in my car, but for some reason it just won't let me watch TV.

This unit has a built-in TV tuner, and I can watch anything that I can catch in the air, but everytime I try to, the picture comes up just briefly, and it goes to a blue screen that says "picture is disabled for your safety".. Now I've tried this with the car parked, with the handbrake on, everything. It always gives that message and I just can't watch TV. I've read through the manual from cover to cover. I thought maybe out of sheer luck, someone on here might have some experience with these units, and maybe get me an answer. i've already emailed the seller, I'm still waiting to hear back from him.