LG TV Error Code 8201: How to Fix It
Easy 10-30 minutes Medium Severity
Verified June 2026
- Error Code
- 8201
- Brand
- LG TV
- Product Type
- smart_tv
- Severity
- Medium
- DIY Difficulty
- Easy
- Estimated Fix Time
- 10-30 minutes
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Tools You'll Need
- Replacement HDMI cable (High Speed or HDMI 2.0/2.1)
- LG TV remote control
- Second TV or monitor (for device testing)
How to Fix Error Code 8201
-
Check the Correct HDMI Input Source
-
Unplug and Reseat the HDMI Cable
Do not force the connector — if it does not seat easily, check that you are inserting it the correct way to avoid bending the pins inside the port. -
Power Cycle the TV and Connected Device
-
Test with a Different HDMI Cable
-
Try a Different HDMI Port on the TV
-
Test the Connected Device on Another TV or Monitor
-
Update LG TV Firmware
Do not unplug the TV during a firmware update — this can corrupt the software and cause additional problems. -
Disable HDMI ULTRA HD Deep Color (if applicable)
-
Perform a Factory Reset as a Last Resort
A factory reset will delete all personalized settings, accounts, and downloaded apps. Back up any relevant information before proceeding.
Parts You May Need
High Speed HDMI Cable
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HDMI Mainboard or Input Board
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High Speed HDMI Cable
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HDMI Mainboard or Input Board
Check Price on Amazon
High Speed HDMI Cable
Check Price on Amazon
HDMI Mainboard or Input Board
Check Price on Amazon
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When to Call a Professional
If you have tried every step above — including testing multiple HDMI cables, all HDMI ports, multiple source devices, and a factory reset — and error 8201 still appears on every HDMI port, the TV's internal HDMI board or mainboard is likely physically damaged. At this point, contact LG Support at 1-800-243-0000 or visit an authorized LG service center. Repairing or replacing an internal HDMI board is not a DIY task and requires a certified technician. If your TV is under warranty, do not attempt internal repairs as this will void coverage.Frequently Asked Questions
What does LG TV error code 8201 mean?
Error code 8201 on an LG TV means the television is not detecting an active signal on the selected HDMI input. It is most commonly caused by a loose or defective HDMI cable, the wrong input source being selected, or a problem with the connected device.
Why does my LG TV say no signal when HDMI is plugged in?
Your LG TV may say no signal even with an HDMI cable plugged in because the cable is not fully seated, the cable is damaged internally, you have selected the wrong HDMI input source on the TV, or the connected device is not outputting a signal. Try reseating the cable, selecting the correct input, and power cycling both devices.
How do I fix HDMI no signal on LG TV without turning it off?
First, press the Input or Source button on your remote and cycle through the HDMI inputs to find the correct one. Then unplug and firmly replug the HDMI cable at both ends without turning off the TV. If still no signal, try disabling HDMI ULTRA HD Deep Color in the picture settings for that port.
Can a bad HDMI cable cause error 8201 on an LG TV?
Yes, a faulty HDMI cable is one of the most common causes of error 8201. HDMI cables can fail internally due to physical stress, kinking, or wear without showing any visible damage. Always test with a second known-good HDMI cable before assuming the TV or connected device is at fault.
Will a factory reset fix LG TV error code 8201?
A factory reset can fix error 8201 if the cause is a software or firmware glitch on the TV. However, if the issue is a damaged HDMI cable, faulty HDMI port, or a problem with the connected device, a factory reset will not help. Try all other steps first since a factory reset erases all your settings and apps.