1703FPs monitor turns itself off....possible power problem

I have recently aquired a 1703FPs monitor but it has a slight problem.  Whenever I turn on the monitor it turns itself off again after a second or so.  It only has power connected.  It starts fine.  I can see the dell logo when I turn it on, and I can also see the self test when I change inputs from analog to digital.  The screen works fine, its just a problem with the power regulator or something to do with the power.  What can be done to fix this?? Also, I wanted to have a closer look at the monitor.  How do you get the plastic covering off the back of the monitor.