Sometimes consumer electronics simply reach the end of their operational lifespan. A heavy drop onto hardwood can crack the fragile ceramic resonator oscillator on the board. Persistent battery acid leaks can permanently eat through copper traces beneath the membrane switches.
If your unit shows no optical emission during the camera test after fresh cells and contact cleaning, get a replacement remote control. Original manufacturer units (such as the standard XRT136 or the voice-enabled XRT260) cost between $10 and $18 online. Universal remotes programmed for this brand cost roughly the same and require zero setup code entry for basic operational functions.
While you wait for package delivery, install the official mobile app on your iOS or Android phone. As long as your mobile device shares the same 2.4 GHz or 5 GHz local Wi-Fi network as your smart television, the application detects the screen automatically, giving you immediate control over power, volume, app launches, and input toggling without relying on physical remotes.
