Dell Inspiron E1505 display flickers for a second then goes blank

[js0123]

My Laptop has not had a working lcd screen for about 3 weeks now but I have still been using it through my television display. When I press the Function and F8 keys at the same time my screen will flicker on for a second then go back off. I am going to take it apart and look for what the problem could be. I have a newer laptop and an external with everything backed up. Where should I be looking for the problem? could It be a simple loose wire or what could it be?

 

[Tmagic650]

If you take a flashlight and shine it on the screen, can you see a faint image. The LCD inverter may be bad. Be careful taking things apart. You can really mess things up if you don't have laptop repair experience