If not included home electronics, do not rush to carry the unit into the workshop — first is to test the functionality of the remote control (RCU). This can be done following simple way.
You need to take a modern digital camera (with plastic lenses) or a mobile phone with photofunia: the matrix is sensitive to the infrared radiation emitted by the led panel. Just take a picture of it at the moment of pressing any button of the remote control: if it is working, the picture is clearly visible, infrared, impulse.
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