Power on then off

I have a sony kp57hw40 rp tv and the blue tube just one day made a pop noise then i figured the blue tube was bad i ordered a new one and i noticed that one of the resistors was burned out i bought a new one then put the new one in and re soldered it now the tv is all back together and i go to turn it on and i get just a blue screen for a few seconds then it just shuts off........? i unplugged the blue tube and same thing but just green screen then the tv shuts down???? what is the problem can anyone help me im going crazy!!!!!

Check the settings on the screen. If they are set too high set will cut off.