I have a Dell Inspiron 7500 laptop. In the last few months, I noticed that the screen was getting darker. In the last few weeks I noticed the screen was getting a red tint. Yesterday, the screen had a slight flicker. Today, the screen is not working.
I plugged the laptop into a external monitor and it displays fine. No darkness or red tint. If I switch back to the LCD while the monitor is connected, the LCD will come on for 1-3 seconds then go black.
How can I find out if it is the LCD, LCD inverter, or CCFL tube?