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LG TV – Troubleshooting TV Screen Brightness Changing

If Energy Saving Mode is active, screen brightness will increase or decrease depending on the lighting of the environment.. Note - Disabling/Enabling Saving Mode:. [WebOS 22 - WebOS 21]. Try This. WebOS 24 / WebOS 23. 1Turn on the TV and press the button on your LG TV remote.. 2.

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What to Check First

Open the official LG USA article for the latest model-specific checks.

Why This Can Happen

Symptoms can have more than one cause, and the correct steps depend on the exact model, installation and operating conditions. Use the checks above to narrow the issue before service.

Safety and Model-Specific Guidance

Stop troubleshooting if you notice burning, electrical damage, unsafe heat, gas odor, refrigerant concerns, or water near electrical components. Follow the official LG USA instructions for your exact model.

Frequently Asked Questions

What should I check first for LG TV – Troubleshooting TV Screen Brightness Changing Intermittently?

If Energy Saving Mode is active, screen brightness will increase or decrease depending on the lighting of the environment.. Note - Disabling/Enabling Saving Mode:. [WebOS 22 - WebOS 21]. Try This. WebOS 24 / WebOS 23. 1Turn on the TV and press the button on your LG TV remote.. 2.

When should I stop troubleshooting and contact LG?

Stop if the product shows signs of electrical damage, burning, leaking near electrical components, or if the recommended checks do not resolve the issue. Use LG USA support for model-specific service guidance.

Does this guidance apply to every LG model?

Not always. Controls, error codes and service steps can differ by model. Confirm the exact model number and follow the linked LG USA article for model-specific instructions.

Related LG Products

These model pages are linked because the stored category or exact model matches this Help Library topic.

Buying Guides for This Product Type

Efficiency & running costTV Efficiency, Energy & Running-Cost GuideHousehold use caseTV Family & High-Use Household GuideFeatures & valueTV Features Worth Paying For — Value GuideFit & installationTV Fit, Installation & Delivery Planning

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Read the Official LG Guide