55NANO91UNA - Monitor LG - Free user manual and instructions
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| Type of product | 4K NanoCell Smart Display |
| Brand | LG |
| Model | 55NANO91UNA |
| Screen size | 55 inches (diagonal) |
| Display resolution | 3840 x 2160 pixels (4K UHD) |
| Panel technology | NanoCell IPS |
| Refresh rate | 120 Hz |
| HDR support | Dolby Vision, HDR10, HLG |
| Smart platform | webOS with ThinQ AI |
| Dimensions with stand | 1235 x 780 x 263 mm |
| Dimensions without stand | 1235 x 715 x 57.7 mm |
| Weight with stand | 21.8 kg |
| Weight without stand | 18.9 kg |
| VESA mount | 300 x 300 mm |
| Power supply | AC 100-240V, 50/60Hz |
| Power consumption (typical) | 175 W |
| Standby power consumption | Below 0.5 W |
| Cleaning and maintenance | Wipe with a soft, dry cloth; avoid liquid cleaners |
| Safety instructions | Ensure proper ventilation; do not expose to rain or moisture |
| Spare parts and repairability | Available through LG authorized service; repairability score 7/10 |
Frequently Asked Questions - 55NANO91UNA LG
How do I connect a soundbar to the LG 55NANO91UNA?
Use the HDMI eARC port (HDMI 2) to connect your soundbar for high-quality audio return. Alternatively, you can use the optical digital audio output. After connecting, ensure the TV's sound output is set to the appropriate source in the sound settings.
Can I mount this monitor on a wall?
Yes, the LG 55NANO91UNA supports VESA 300x300 mm wall mounting. Use a compatible wall mount rated for the TV's weight and follow the safety instructions in the manual to avoid damage.
What is the optimal viewing distance for a 55-inch 4K TV?
For 4K resolution, a comfortable viewing distance is about 1.5 to 2.5 times the screen's diagonal, roughly 2 to 3.5 meters. Sit closer to see finer details or farther for a more immersive cinematic feel.
How should I clean the screen safely?
Turn off the display and unplug it. Use a soft, dry microfiber cloth to gently wipe the screen. Do not spray liquids directly onto the screen. For stubborn spots, slightly dampen the cloth with distilled water (not alcohol or ammonia-based cleaners).
How can I enable Game Mode?
Press the gear button on the remote, go to All Settings > Picture > Game, and select Game Mode. This reduces input lag and optimizes the picture for gaming, especially at 4K 120Hz.
Why does the display not turn on?
First, check if the power cord is securely connected and the outlet works. Ensure the power button on the TV is not turned off. If the standby LED is red, try the remote. If still off, unplug for 30 seconds, then replug. If the problem persists, it may require service.
How do I update the software on the LG 55NANO91UNA?
Go to All Settings > General > About This TV > Software Update. Select Check for Updates and download the latest version if available. Ensure a stable internet connection is maintained during the update.
Can I use this as a computer monitor?
Absolutely. This display supports HDMI 2.1 and 4K 120Hz, making it an excellent choice for PCs and gaming consoles. Connect your computer to an HDMI port, and adjust the resolution and refresh rate in your PC's display settings.
What HDMI cable do I need for 4K 120Hz?
You need an Ultra High Speed HDMI 2.1 cable that supports 48Gbps bandwidth. Such a cable ensures full 4K 120Hz with HDR without compression. Standard HDMI 2.0 cables may limit you to 4K 60Hz.
How to reset the monitor to factory settings?
Press the gear button, go to All Settings > General > Reset. Enter the PIN (default is 0000) and confirm. This restores all settings to their default values, but system software remains unchanged.
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USER MANUAL 55NANO91UNA LG
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Product information
Brand : LG
Model : 55NANO91UNA
Category : Monitor