Troubleshooting LG 43UN74003LB

LG 43UN74003LB TV 109.2 cm (43") 4K Ultra HD Smart TV Wi-Fi Silver

Frequently Asked Questions about the LG 43UN74003LB

What should I do if my LG 43UN74003LB won't turn on or turns off by itself?

Check timer or energy-saving settings: Some TVs have energy-saving or timer settings that might cause them to turn off automatically. Check and adjust these settings if necessary on your LG 43UN74003LB.

Ensure all cables are properly connected, especially if you are using external devices like game consoles or sound systems.

If the LG 43UN74003LB turns off after being on for a while, it could be an overheating issue. Ensure there is enough ventilation around the TV.

Make sure the LG 43UN74003LB is correctly plugged in and the outlet is working. You can test by plugging another device into the same outlet to check.


How can I connect my LG 43UN74003LB to the Internet?

The LG 43UN74003LB has the following wireless connections:
Apple AirPlay 2 support: Yes.
Bluetooth: Yes.
Miracast: Yes.
Wi-Fi: Yes.

You can connect the LG 43UN74003LB to the internet via a WiFi wireless connection or via an Ethernet cable. Consult this guide to see the steps one by one and with images.


My televisor LG 43UN74003LB has no signal. What should I do?

If your LG 43UN74003LB does not have a signal, there are several steps you can follow to try to solve the problem:

Check cable connections: Make sure all cables, including the antenna, coaxial cable, or any other input cable, are properly connected to both the TV and the signal source (such as a cable or satellite box).

Verify the input source: Ensure that the 43UN74003LB is set to the correct input source (HDMI, DVB-T, cable, etc.). You can switch between different sources using the remote control.

Check the antenna or cable connection: If you are using an antenna, ensure it is correctly oriented and there are no obstacles blocking the signal reception. If you have a cable service, check for any service interruptions in your area.

Rescan channels: In the settings menu of your LG 43UN74003LB, look for the option to tune or search for channels. This may be necessary if the channel setup has changed or if you have moved the antenna.

Check on another TV: If you have another TV at home, try to see if it also has signal issues. This can help you determine whether the problem is with the specific TV or the signal source in general.


I can't install apps on my LG 43UN74003LB

The most common problem when installing new applications on a TV like the LG 43UN74003LB is usually lack of storage space, check if you have enough storage space available on your 43UN74003LB. If necessary, delete apps or files you don't use.

Another possible cause is regional restrictions, some applications may have geographical restrictions. Make sure the apps you are trying to install are available in your region.

Finally, other possible causes could be an internet connection problem or TV compatibility, check if your TV model is compatible with the applications you want to install.

Pre-installed apps on the 43UN74003LB:
Video apps: Apple TV,Netflix.


How do I connect external devices, such as game consoles or Blu-ray players, to the LG 43UN74003LB?

The LG 43UN74003LB has de 3 input port where you can connect a Blu-ray player, game console, set-top box, Chromecast, Fire Stick, Xiaomi TV, or any other HDMI device.

HDMI ports are usually located on the left side or at the back of the LG 43UN74003LB. Simply connect one end of the HDMI cable to the TV and the other end to the device you want to connect. Then, using the 43UN74003LB remote control, select the video input source. Depending on the HDMI version, the TV may automatically switch to the correct input source when the device is turned on.


How do I connect a hard drive, external memory, or USB drive to the LG 43UN74003LB?

The LG 43UN74003LB has 2 input port where you can connect a hard drive, external memory, or USB drive.

Like the HDMI ports, the USB ports are usually located on the left side or at the back of the LG 43UN74003LB. If it is a hard drive, you will need to connect it using a USB cable, and if it is external memory or a USB drive, you can connect it directly to the TV's USB-A port.


How can I mirror my phone or computer screen on the LG 43UN74003LB?

The LG 43UN74003LB has Miracast support, this means that it has the protocol to be able to send the image that we see on our mobile phone, tablet or computer wirelessly using Wi-Fi Direct. Check out the following tutorial with everything you need to know to duplicate the image on the LG 43UN74003LB: Screen sharing on TV (Screen mirroring) .

If you cannot or do not wish to use a wireless connection to mirror the screen with the LG 43UN74003LB, you can perform "mirroring" (mirror mode) or send the image to the TV using an HDMI cable. For this, you will need to connect the cable to one of the HDMI ports of the 43UN74003LB and to the computer or mobile phone using a USB to HDMI adapter.


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