Dbox2 wont switch on

[d3m4noid]

my dbox2 doesnt switch on..when i plug it in comes on for a second then switches of.. whats happened?

help please....

[Derekwd]

Think we might need a bit more info than that m8.

Have you just got the box
Have you had it for a while
Has it ever worked
Have you changed anything just before it did this

Derek