The only way is open it. and clean the keypads and contacts battery from dirty+corrosion+bad contacts with contacts cleaner from any supplier electronic devices. see the picture attached. the LED must be TURN ON when you hit any key you can use the digital camera or webcamera cell.if the LED is NOT coming ON, proceed with the steps before mentioned. God bless you
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The only way is open it. and clean the keypads and contacts battery from dirty+corrosion+bad contacts with contacts cleaner from any supplier electronic devices.
see the picture attached. the LED must be TURN ON when you hit any key you can use the digital camera or webcamera cell.if the LED is NOT coming ON, proceed with the steps before mentioned.
God bless you