no ca found

hi i have a dm800hd with the no ca found i have fixed a lot of these b4 but this on has me at a loss i have tried tried everything i can think of to fix this one but cant i have noticed that the ethernet litghts stay on all the time
but on my other dm800hd thay flash could this be the problem if so how do i fix it

thanks

Quote from Ten Below

Try this buddy.
[h=1]Dreambox NO CA FOUND Repair Tool SIM2/01 EDition[/h]

thanks m8 but i have tried that and every other tool but nothing seams to find the box ive tried other null modem and network cables with no success thats why i thought it was the ethernet connection at the back not flashing ie (the lightes stay on all the time)