If the control works normally, you will see the flash on IR Blaster of the controller. If not or the light is dim, it's time to replace the battery for the controller.
If when the battery is replaced but the lamp still does not appear, the control may have a problem. At this time, you should buy a new controller.
Infrared rays appear on the camera to show that the control is still normal
Not only can it be used with phone cameras, this trick can also be used on any other digital camera. If you have a laptop, try the built-in camera on your device.
Note : Not all cameras work. Some applications with integrated technology prevent this procedure from being applied. Before concluding that the controller is broken, try another camera of the phone.
The remote control sends a signal to the infrared TV, the sensor on the TV will catch this light. Since infrared is similar to ultraviolet (ultraviolet / UV rays), it will be outside the visible range of the naked eye.
When controlling infrared emission to the TV sensor, the sensor tells the TV what to do.
The phone camera has a lens that works similar to a TV sensor when an infrared light is illuminated. It detects this ray easily and that's why there is a light ray appearing on the image of the control on the phone camera.
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