Monitor or LCD screen
The monitor or LCD screen may be an expensive item to replace, and should be cleaned carefully to prevent damage.
Monitors are usually covered with a special coating that can be permanently streaked if the wrong solutions are used to clean them. Ammonia-based cleaning products can dissolve the coating on the monitor. Use antistatic cleaners that are specially designed for cleaning monitor and LCD screens. Screens should be wiped when switched off and cold to prevent generating static electricity that can be harmful to the monitor and to you. The best way to clean your monitor's screen is to dry-dust it with a lint-free cloth. If the glass requires further cleaning use an antistatic cleaner. Remember that water, which most liquid cleaners are made of, is an excellent conductor of electricity. You should not open the cover of a monitor, as you will be exposed to the high voltage inside the monitor.
Unlike computer monitors, LCD screens are not made of glass, but are covered with a thin sheet of plastic. To avoid scratching the surface, avoid any abrasive cleaners, and use a lint-free soft dry cloth. If further cleaning is required, use a cloth lightly dampened with alcohol to remove stubborn marks.
A dirty touch screen can affect navigation. Use a soft cloth, or approved screen wipe to clean the screen.