epson dx 6050 dead but lights come on?

hi

my epson dx6050 has stopped working.
plug it in and turn it on - nothing!.

sometimes if i hold down the power on button for a while all the lights come on and stay on until I take my finger off again. then, if i press the power on button again all the lights come back on again and so on for a while until nothing again.....

nothing comes up on the screen and the printer makes no noises or movements.

any ideas?

thanks
don