Diagnosis / Recommendations
Do I need a new display? Perhaps. Is it:
Cracked?
A cracked display cannot be repaired and requires the purchase of a new display.
Dim / Black?
A dim display is either the result of 1) a faulty inverter which is a separate piece from the display or 2) a burned out backlight which is part of the display. In the majority of instances, the inverter is the cause of the problem and not the backlight as most people tend to assume and therefore does not require the purchase of a display.
Lines?
A display with lines may be caused by either 1) the video card or 2) the display. In the majority of instances, the display is the cause for lines and therefore requires the purchase of a display