It is usually thought better to repair LCD parts than to replace them. The reasons are manifold. Monitors and terminals last over ten years. In the case of LCD screens, the lifetime is even longer. The malfunctioning of a tiny part can make a monitor redundant. If the main transformer or the tube fails, then replacing the entire TV is logical. If not, then repair is the cost-effective alternative. Terminals and monitors hold heavy metals that are potentially dangerous, so repairing is also a more environmental friendly thing to do. And, most importantly, repairing costs a lot less than the purchase of a new electronic component.
The most common failing of an LCD monitor is dimming of the backlight after substantial use. However, for about $20.00, the backlight can be replaced and the monitor restored to its former self.
Nowadays, there are highly competent, anti-reflection polarizer films available in the market. This polarizer film when applied to the LCD screen increases display contrast as well as readability. Images become sharper and clearer; the screen provides deeper colors; it allows for a wider viewing angle in bright settings; and protects LCD panels from scratches and fingerprints.
The flat panel in the LCD television makeup is the most exorbitant item to replace. In fact in some cases, it could exceed the cost of the total unit. Split or broken LCD panels obviously need replacement. Another sigh of a flawed panel are lines running the length of the panel. Still, three quarters of such panels can be repaired.