Your LG TV runs software too—and yes, software updates can bork your HDMI ports. A buggy firmware update might disable certain ports or confuse the input signal. It’s like your TV decided to go on a digital juice cleanse without asking you.
Head to the settings menu and check for a system update. If one is available, install it. If your TV is already updated, try a factory reset (back up your settings first). This wipes the slate clean and often solves weird connectivity gremlins.
Hdmi Port Not Working Properly at Harriet Ridgeway blog
Fun fact: LG’s WebOS (the software on most of their smart TVs) is based on Linux. It’s surprisingly robust, but even Linux has its bad days. A reset is like giving your TV a chill pill—it usually works.
Device Defiance
Sometimes, the problem isn’t your TV—it’s the device you’re plugging in. Your Roku, Apple TV, or PlayStation might be outputting a signal your TV can’t recognize. Try plugging the device into a different port, or use a different HDMI cable entirely.
Also, check the device’s resolution settings. If it’s set to 4K at 60Hz and your port only supports 4K at 30Hz, you’ll get a blank screen. Lower the resolution temporarily in the device’s menu—it’s like asking your loud friend to speak a little softer so the room can hear.
If you’re using an older soundbar or AV receiver, it might be handshaking poorly with your TV. Unplug the entire chain—TV, soundbar, device—wait 30 seconds, and plug them back in one at a time. The order matters: start with the TV, then the soundbar, then the source.
