dvd problems

[quantumbuster]

I have recently purchased my first ever Mazda (Mazda 5 2.0 Sport 2005 model) which I am really pleased with, but I am having some trouble with the factory fitted DVD player. it is a DOM 6500 roof mounted one.
Problem is it doesnt power up so I guess a fuse must have blown, thing is I dont know where the fuse holders are located?

Can anyone help with this?

 

[phunky.buddha]

Under the dash on the driver's side