Troubleshooting an LG TV with Vertical Lines and Shutdowns

If your LG TV is displaying vertical lines and then turning off with the standby light on, it may indicate a hardware issue or a problem with the TV's internal components. Here are some steps you can follow to diagnose and potentially fix the issue:

Step 1: Power Cycle the TV

Unplug the TV from the wall outlet. Leave it unplugged for about 5-10 minutes. Press and hold the power button on the TV (not the remote) for about 30 seconds. Plug the TV back in and turn it on to see if the issue persists.

Step 2: Check the Connections

Ensure that all cables (including HDMI and power) are securely connected. Try using different HDMI ports or cables to rule out a connection issue.

Step 3: Inspect for External Damage

Check the screen for any visible damage or cracks that could indicate physical damage. Look for any signs of overheating or burnt components on the back of the TV.

Step 4: Reset the TV

If you can access the menu, try performing a factory reset:

Go to Settings All Settings General Reset to Initial Settings. Note that this will erase any personalized settings.

Step 5: Check for Firmware Updates

If the TV powers on long enough, check for any firmware updates in the settings menu.

Step 6: Test with Different Inputs

Try switching to different input sources (e.g., cable, streaming device) to see if the problem is specific to one source.

Step 7: Run a Picture Test

Some LG TVs have a built-in picture test feature. If accessible, run this test to see if the lines persist.

Step 8: Contact Customer Support

If the problem continues after trying these steps, it may indicate a more serious hardware issue like a failing T-con board or main board. In this case, contacting LG customer support or a professional repair service may be necessary.

Step 9: Warranty Consideration

If your TV is still under warranty, consider reaching out to LG for service or replacement options.

Additional Notes

Vertical lines and shutdowns can sometimes indicate issues with the display panel or internal circuitry that might require professional attention.

Avoid attempting to open the TV yourself as this can void warranties and lead to further damage.

If you have any other details about the model or any other symptoms, feel free to share, and I can provide more tailored advice!