This is a crazy problem. The LCD screen on my Acer Aspire 5160z is dim. I figured it was either the LCD back-light or the power inverter. I have replaced the whole LCD and back-light, the inverter and the LCD cable, all with new pieces. The LCD is still dim. Everything works on an external monitor but the main LCD is dim and cannot be adjusted. I have hooked the LCD up to another laptop and it work fine on it. Any ideas?