How to Check a remote control's batteries by the IR sensor
Picture this: the infrared sensor on your TV is not working and you are blaming it on your remote control batteries. Well, to make sure exactly what is going on, try testing TV remote to be sure. To the naked eye, you might not be able to see the infrared light, so you could think it's dead, but try filming with your camera phone or digital camera, which could pick up the IR signal.
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