Remote is now an inevitable part of our life to operate may electronic devices. Remote is an Infrared transmitter giving coded signals to the IR Sensor of the device. The circuit inside the device decodes the signals from remote and do the jobs accordingly. Remote fails due to 3 reasons. 1. Dead battery 2. Loose contact or Rust in the battery terminals. 3. Failure of Infrared LED. So before repairing or purchasing a new remote, just try this simple trouble shooting.