i had the same problem,i am an electronic technician,the problem is in the transformer that goes beside the screen,the high voltage was jumping,even you can see a blue ray,you need to isoleted,with silicone,but be careful cause you can burn your hands.also check the light tube.If have any questions my mail is ferminmon@yahoo.com.mx My english is no so good but i hope you undestand.
Fermin Moncada, September 2006