When I have it on the crt I can see a very very faint image on the laptop (which I didn't expect) and when I switch it to the laptop it comes on perfect for the 10 seconds then goes blank, and again I can make out a very faint image. I thought it might be the inverter, based on this: http://www.laptopparts101.com/screen-inverter-board/ and the fact that the screen comes on for the 10 sec. How would I know if it is the backlight. Don't understand what removing the HD shows?