The problems related to the inverter are darkness to the screen in most cases or flickering of the backlight. At times it can stop the screen form working at all but not generally. A general fault with laptop screens is a dark screen, usually it is assumed that it is the backlight that is at fault, sometimes this may be right, however more often or not it is just the inverter not working, or not giving the backlight the power it needs. The inverter is usually cheaper to change than the backlight, as the backlight is very fragile and can be easily broken. On some time a repair of the inverter is possible, although regularly labor charges on fixing the inverter can sometimes lead up to being more costly than just replace it.

Generally the left end, the lead that gives it power is connect into a small white socket and from the further end, generally the right side, the backlight lead from the screen is connect into another white socket. The backlight is a very small, long, very delicate light bulb that runs along the very bottom or sometimes the side of the screen.