the blue light on my mikomi tv no longer works?

my Mikomi tv usually comes on with a strong blue light at the base of the set .It became very faint and started flickering and now there is no blue light at all
This means I can not get any programes on at all
it looks like the TV is totally dead
What needs to be done to get the blue light back so i can watch my 20 inch TV
All suggestions gratefully received