Tip & How-To about Televison & Video

Kitchen Table Remote Testing, Course 101

So, your remote isn't working? Is it the TV or is the remote? If these questions apply to you, then read on!

Nearly all TV remotes use Infrared (IR) light to transmit your requested operation from your hand to the TV, like magic. We depend on them for our viewing pleasure! Sometimes, when our trusty remote stops functioning, we grab a fresh set of batteries and POW!!!... nothin'...

You can quickly check your remote to see if it is functioning using only 1 item... a digital camera. It doesn't need to be fancy or expensive... heck, you can use the camera in your second best friend... your cell phone!

Simply fire up your digital camera and aim your remote at it. While looking and the transmitter of the remote through with the camera LCD display (not the view finder), press a button. Did you see the transmitter light up? If so, the remote is functioning!

You can't see infrared light, but your digital camera can... pretty cool!!!
Take a look at the video to see this test in action. (click the video a few times if it does not start.)





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1 Answer

Sony LC-C3234U Remote Problem


Check this after replacing the the batteries of the remote control with fresh ones. If the problem still persists, the remote control and the infrared sensor inside your TV [both] should be checked.

Dec 09, 2012 | Sharp Televison & Video

1 Answer

Zenith tv, model #b27a11z. My remote stopped working with my tv. The remote lights up and the controls all work manually. I changed batteries, even got a universal remote with negative results. Its as though the signal isn't being received by the tv. What can I do?


Hi Keith,


First of all, thank you for posting your question here at Fixya.

My first advice is to confirm if the remote control is not the issue here and ensure that the fault came from the TV itself. Point directly your remote control's infrared emitter(Sensor) to your cellphone camera and then press any button key at the remote control, you will be able to see the flash of an infrared through your camera if the remote control is working fine. Watch the video below to have an idea how you gonna do this.



If you've confirmed that the remote control is not faulty, this is an indication that the problem is on the infrared receiver inside the TV. I would advice you to clean the TV's front panel infrared lens using a soft cloth, keep away all obstruction from the IR receiver, turn of the bright light in the room and check if the symptoms still persist. If yes, then the IR receiver inside the TV is already faulty and needs to replaced with a new one.


mjsazon

Jan 20, 2012 | Zenith A27A23W 27" TV

1 Answer

I need to replace the infrared sensor unit for Vizio L37 HDTV.


Good day!!!

Before I answer your question let me clarify something..

  1. What sensor you need to replace is it on the remote IR (infrared) or the receiver on your TV?
  2. Did you try other remote control?
  3. How did you say that you need to replace the IR sensor or receiver on your TV?
To test the remote please use a digital camera..How? place the shot to infrared of your remote then look at the screen of your camera after that press any button on your remote and look if the IR sensor lights up..

Please answer all my clarifications for me to diagnose the exact problem..Because replacing of IR sensor on TV is difficult..

Thank you for using fixya and choosing my service..

Dec 11, 2011 | Televison & Video

1 Answer

Remote won't work. Tried new batteries, reprogramming, etc. Universal Remote doesn't work either. LG #42PC5DC


Hi,
To confirmed if the remote control is working fine, aim the remote control sensor(IR emitter) directly to your cellphone camera. While pressing any button key on the remote control, you can see the flash of an infrared emitted by the remote control if it is working fine.


If you've confirmed that the remote control emitted an infrared but still the tv won't communicate with it, this is an indication of faulty IR sensor board of the TV. Check if there's an obstruction from the IR receiver in front. Keep away all of it, clean the plastic window of the IR receiver with soft clean cloth.
If the symptoms still persist, you have to replace the IR sensor board. Check the actual part no. of the board before ordering.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Aug 22, 2011 | LG Televison & Video

1 Answer

I just can't get it to work, new batteries and all.


First check if the remote control is sending an infrared signal. If the LED is flashing, this does not mean the Remote control is sending the IR signal. There is a separet Infrared LEd that sends the signal. To check the IR, point the remote control in a video camera or any camera with real-time monitor (phone cam, webcam, etc.) and press any button. You will see a white flash coming from the Remote control. thjis works best if the camera is black&white, for color camera, the IR is still visible but quite faint. Another way of checking the IR (if you do not have a camera) is to press the RM in front of another device with remote control and while doing so, press the correct remote control . If that other does not function or functions erratically, then the remote control in question is emitting an IR signal. If there is no IR coming out, the solder conection of the IR LED might be the problem. It is rare that the IR LED will be damage because the remote control is only 3 volts. If the remote control does emit an IR signal, then the TV remote reciever is defective. I had this problem with a CD player that I have fixed. The IR reciever looks like an LED (dark colored) with three pins (V+, signal, ground). Cost less than $3

May 18, 2007 | Jensen JER-323 Remote Control

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