Already set up and somethings not working Our troubleshooters and support articles will help set things right.

It then helps you create your Watch TV Activity (or scene) so youre only one-button away controlling your devices.

Remove the back battery cover and insert the two AA batteries into the remote.

Follow the on-screen instructions, or learn more about creating a Harmony Activity.

Each device button will light up when an IR command is being sent.

Channel buttons will control your cablesatellite box while volume will control your AV receiver.

After pressing the Watch TV button, be sure to keep the remote pointed at your devices until the device buttons turn off.

Jump to your Favorite Channels, switch to picture-in-picture, or change screen size.

Make sure that the controller has a clear view to the device and remove or open any cabinet doors that may be interfering with the IR.

Depending on the device, it may take 60 seconds or more for the command to process so keep the controller pointed at the device until the command has been successful.

If it doesnt, the buttons may not be registering and need replacing.

If it is not, the controller may be broken and needs to be replaced.

If the buttons not responding are the ones under My Device, the buttons and the light may both need replacing and are therefore not selecting the correct device so that the controller can correctly use the right command for the other buttons being pressed.

Follow this guide to opening and cleaning inside the remote.

If there are torn or missing buttons, youll have to replace the sheet entirely.

Though the device may be taking a long time, you can re-program the device to the controller and sync and it may fix the issue.

In some cases, the issue could be hardware related so contacting Logitech support for further troubleshooting is another option.

If it isnt fixed, try another USB cable and connect to the computer again.

If neither of these fixes the problem, before getting to a more advanced solution, if you have another available computer check if it can be recognized on it.

If it cant, the remote controls mini-USB port may be damaged and will need replacing.

If you have tried multiple times for the remote control to learn the new command and it wont work, the IR receiver needs to be replaced.

Logitech Harmony 300 Manual