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IR detector My IR detector is definitely bad. What do I do? Can I fix it myself?

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Karl Whisenand

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An infared detector is just a transistor that is covered with clear plastic.
matching the spec on it though is hit or miss.
first be sure it is not the ir trasmitter, take it to radio shack and see if their infared re-transmitter broadcaster sees it . or aim at a digital camera
or hold near a radio though that only hears the digital part.
radio shack has some iR transistors in stock usually .
basically you can just plug one in and it may work but you may have to know how to bias (balance ) the transistor to work correctly.
there are many places to scrounge a ir receiver transistor
old tvs , learning remotes, laptops , printers ,
you can inject the output signal of the remote into the ir circuit to see if it is working but you need to add a resistor and drop the voltage a bit.
hope that helps some.

Posted on Apr 26, 2008

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Try hitting the reset button to center the needle in the meter then adjust the sensitivity knob to lower the sensitivity. Double check all your switches to make sure they're where they should be.

Finally, remove the batteries completely. If they're not alkaline, replace them.

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I've had this happen to my low end metal detector and when I went through all of the original set-up steps, I was able to clear the problem up myself.

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cthy_prry,

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I hope this answers your question.

Thank you,

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