0 - Collapse - forgot to mention by FloridaLiving Feb 5, 2011 4:37AM PST. You have to use the factory remote. Even though the repeater system is flashing i think it needs to be replaced. I can see the IR light coming from the remote. I believe the IR Receiver is at the bottom of the TCL logo. Well what is odd is that I've tried the emitter that runs the DVD with not problems on the @TV, and it won't work. Remote (Basic IR) suddenly stopped working. Why Doesn't My IR Extender Cable Work by frankphelps Feb 23, 2015 1:25AM PST Remote control of the STB works better after I rotated the STB to be more square with my chair. I don't know how long a 3.5mm cable the IR repeater will work with or the Hub. My IR Camera, and Windows Hello, also some time stopped working over the past few days. An RF remote would communicate wirelessly with a 'base station' that you would locate near the cable box that then sends IR down an emitter to the cable box. New TCL Roku TV ( 2-3 weeks old). I find the sensor with the factory remote, not an IR emitter, to be sure that none of your IR system and its possible problems can confuse things. Since driver version 275, the emitter and stereo drivers are included with each new driver version and must match. IR signals will bounce off of cabinet doors and walls, but will not pass through them. Also tried unplugging TV and plugging it back. You can't be sure your entire IR system is working until you find the IR receiver, so you can't start by finding the IR receiver with the system. Oh, and I am confused about the backwards emitter. Then I take the one I intend for the @TV which isn't running it, and put it on the DVD player, and it works. So you can not use any of the old emitter drivers with any of the newer drivers. Tried removing batteries, replacing batteries etc. So all my connections are working fine. BTW, do not use the setup disc that came with your glasses. There is a very small IR receiver board in the TV (approx 0.4" x 2.25") which is located in the lower right side corner of the TV (as you face the screen). I connected my MonoPrice IR Repeater using a 3.5mm Female to 2.5mm male to the Harmony Hub & from the Hub to my TV & cable box with a 3.5mm 2 lead stereo emitter. I then tried Dell Support Assistant, but it failed to install too. How to Fix Any NOT WORKING Infrared Remote Control: Have you ever encounter you grab your remote control and turn your appliances on and it doesn't work you think it's just a Low Battery situation that it could be FIX, But when you change it it doesn't work at all and you give up you just toss your r… Most digital cameras and nowadays smartphones are able to see and show IR light If emitter is dim / not working, go on to IR parts replacement. To test the emitter, connect power and look at the emitter with a digital camera or a smartphone to see if the emitter is working / dim. Make sure that your motherboard drivers are updated also, especially the USB drivers. Windows device manager showed only a generic webcam under imaging systems. Place an IR mini blaster next to other devices, that use IR so that they can be controlled as well. There is nothing blocking the path to the TV. The sumptom was the TV would respond intermittently to IR commands from my Cable and harmony remotes but would work ok using the TV remote which was paired to the TV using Bluetooth (not IR). That tells me an external IR emitter would work too if one had one. misI finally decided to try "it". Hello again, TSOP4838 doesn't work with the IR led (emitter) that I initially planned, good thing my buddy has a photodiode receiver, the code works I can now detect if the object is near or not. We know that the IR repeater system still does not work when the TV is off so that rules out the LCD. Both the TV & cable box are running now. 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