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[LG TV Ultra HD] I use a set-top box for watching TV. The TV

If the TV produces the sound okay but not the screen, you can check the condition of the TV by performing an image test on the TV.. If you have a problem with the set-top box or with the telecommunication line, the sound may be produced okay, but not the screen.. In this case, you may try r.

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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 Ultra HD] I use a set-top box for watching TV. The TV produces the sound okay but not the screen?

If the TV produces the sound okay but not the screen, you can check the condition of the TV by performing an image test on the TV.. If you have a problem with the set-top box or with the telecommunication line, the sound may be produced okay, but not the screen.. In this case, you may try r.

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

Household use caseTV Family & High-Use Household GuideFeatures & valueTV Features Worth Paying For — Value GuidePerformance & capacityTV Performance, Capacity & Everyday-Use GuideSizingTV Screen Size & Viewing Distance Guide

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Read the Official LG Guide