How to check if your TV remote is working

We can’t see infra-red and so if the manufacturer of your remote control hasn’t provided a LED, you won’t know if its working or not.

However just about every digital camera can see infra-red.  So view the business end of your remote through your camera and you’ll see the transmitter flash in response to your button pushes.

A similar technique can be used to see if a fibre optic cable is active.

A Simple Solution from Redback

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