Jack : Hi and welcome to justanswer. To answer your question; Normally you should be able to use the menu button on the tv to get access to the "operation locks" Here is the procedure; To unlock the buttons on the remote control by using the touch sensor panel of the main unit (see page 25): 1 Press MENU to display the MENU screen, and then press VOLl/k to select "System Options". 2 Press CHs 1. If any obstructions block the infrared signals, the IR remote won’t work. 2. Due to physical damage or liquid spillage, the Harmony remote may become faulty. 3. If the batteries don’t have a charge, it will make the remote unresponsive. 4. When you haven’t connected the Harmony remote and the TV to the same WiFi. 5. Restart the Roku. The next basic thing we can do is restart the Roku device ---the problem may not be with the remote at all. If your remote isn't working at all, you can use the Roku remote app to navigate to the Settings menu and restart the device. Another option is to simply unplug the Roku and wait a few seconds before plugging it back in. New EN2A27S Remote Control for Sharp Smart TV 55H6B 50H7GB 50H6B N6200U LC-40N5000U LC-43N5000U LC-50N5000U LC-50N6000U LC-50N7000U LC-55N620CU LC-65N9000U LC-75N620U LC-75N8000U Infrared 4.5 out of 5 stars 3,255 NOTE: If the remote control buttons do not work, the remote control may need to be replaced. Does Sparklight have a list of the different codes needed to program my universal remote? Yes, we do! Since remote codes vary by TV, please click on the appropriate remote image below for your remote. You will be taken to the page that will walk you ZHtEDqY.

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