Have you ever powered your LG TV on, all ready for a relaxing night in, but got a big blank screen instead?
This issue is more common than you think. But luckily, you can fix your TV in less than a few minutes. Our technical team compiled all the solutions with these 4 easy tips!
4 Troubleshooting Solutions When Your LG TV Won't Turn On
Fix #1: Unplug Your TV (Then Plug It Back In Again)
Try this if your LG television shows a black screen and the red light isn’t on.
Often, the simplest tip works best. If your TV won’t turn on after you press the Power button, complete a soft reset:
- Unplug the TV.
- Leave it unplugged for about 1 minute.
- While unplugged, hold down the Power button for 15 to 30 seconds.
- Plug the TV back in.
You should also check that there are no problems with both your power cable and the power source your TV is connected to. If you see exposed wires or other visible damage to your power cord, replace it.
If your TV is normally plugged into a power strip, plug it into a wall outlet instead. Still doesn’t work? Plug in a completely different device to check the outlet itself.
If the new device doesn’t turn on either, then the problem is with your power source. You may need to call an electrician to fix the power supply in your outlet.
Fix #2: Check Your LG TV Remote Control
Try this if your LG television shows a black screen but the red light is on.
Another possible reason why your LG television won’t turn on is a problem with the remote control. Try turning the TV on using the switch on the TV itself. If the TV responds to this, but not the Power button on your remote control, here are three ways to fix your remote.
Check the Sensor on Your LG TV
The line of sight between the sensors on your LG TV and on your remote control should be clear. If the TV sensor is blocked, it won’t pick up signals from your remote.
LG TVs often have the sensor on the bottom right panel. Remove any objects around it and try using the remote control again.
Check the Battery on Your LG TV Remote
If you LG TV still won’t turn on, your remote may need new batteries. Open the battery compartment on the back of your remote control and insert fresh batteries. Make sure that the + and – ends are correctly aligned.
Reset Your LG TV Remote
If your TV still isn’t working with your remote, try to reset your remote control.
1. Connect the RF Dongle (included as an attachment with your LG TV) to its designated slot on the back panel of the TV.
2. Power on your TV using the switch on the TV itself.
3. On your remote control, press the Back and Home buttons at the same time for 5 seconds. This will reset your remote.
4. Wait 20 seconds.
5. Press the scroll wheel of the remote control to re-register it with your LG TV.
If your remote control doesn’t have a scroll wheel, go to the LG support site and look your specific TV unit up online. The user manual will have more detailed instructions on how to reset your remote.
(Confused about the different models of your LG device? Well, here is our dedicated page explaining the LG TV model numbers and their corresponding meaning)
Fix #3: Check Connected Devices And Cables
Try this if your LG television turns on, but the display isn’t working.
If both your power source and your remote control are working fine, but your screen stays blank, one of your external devices or other connections may be at fault.
- Make sure that all cables are connected properly to their respective appliances.
- Check that your TV is set to the correct input source. Press the Input button on your remote and select the correct option.
- If a laptop or other HDMI device is connected to your TV, check that their video resolution settings match up. You can change this in the settings menus of both devices.
Fix #4: Replace Your TV's Power Capacitors
Try this if you’ve tried all of the previous tips and none of them resolve the issue
If none of the easier tips on this list have worked, your TV’s capacitors may need replacing. Faulty capacitors interfere with the flow of electricity in your TV. Common signs of blown capacitors include:
To check the status of your TV capacitors, you’ll need to open up your unit and inspect the power board. Often, a visual inspection is enough to spot a blown capacitor. Some of the most obvious signs of a blown capacitor are:
If you do find that one or more of your TV’s capacitors have been damaged, you have two options.
- You can contact LG’s customer services department and have a qualified technician repair your TV. If you’re still within the warranty, troubleshooting should still be free of charge.
- You can replace the blown capacitors yourself. You can do this if you have the right tools and if you’re confident enough in your DIY skills.
Please note, however, that this should be a last resort option.
While it would save you some money, fiddling around with the internal components of your TV unit will automatically invalidate your warranty. Furthermore, you could electrocute yourself.
How To Replace Your LG TV's Capacitors
If you’re really set on DIY TV repair, you’ll need these tools:
Note: The micro farads, temperature, and voltage  of your new capacitors should be as close as possible to the old ones. And here’s the step-by-step process:
- Unplug your TV and remove all power cord connections.
- Unscrew the back panel and take out the power board.
- After locating the blown capacitors, take note of how they are positioned. Take a picture of the board before you disassemble it.
- Plug in the soldering iron and let it heat up.
- Apply the tip of the hot soldering iron to one of the wire leads on the capacitor. Hold it there until the solder melts.
- Switch from one lead to the other. Repeat until the solder on both leads is completely melted.
- Pull the capacitor out with pliers.
- Insert the new capacitor in the exact same position as the old ones.
- Apply the soldering iron until the solder on the new leads melts, holding them in place.
- Trim the new wire leads to match the length of the old ones.
- Repeat with all the capacitors that need replacing.
If your LG TV won’t turn on, unplugging your TV and plugging it back in is the easiest fix. In other cases, it might be a failure in your remote control or the devices connected to your TV.
In the worst-case scenario, you may need to replace your TV’s capacitors. This is a more difficult fix but can be done as long as you have the right tools and are very careful. Our technical team hopes that the troubleshooting methods we listed can resolve your LG TV not turning on errors.