TV picture is too dark: check the source, settings and screen

1. Open the TV’s settings menu over the dim picture and see whether the menu itself is also hard to see.

   If the menu is normal but one programme is dark, compare another channel, app or input; the content or source may be responsible.

   If that does not help: If the menu is also unusually dark or one region remains darker across menus and sources, use the model’s picture test and contact the manufacturer if the test is affected.

2. Try another scene or channel before changing settings, especially if the image darkens only during particular scenes.

   If the effect occurs only in one scene or channel, that points away from a constant whole-screen brightness setting.

   If that does not help: If every source appears dim, continue to picture mode and energy-saving checks.

3. Run the TV’s built-in picture test if it offers one.

   A normal test image with a dark app/channel points toward that source or picture-mode behavior; an unusually dark test deserves model-specific TV support.

   If that does not help: If your TV has no test, use the exact maker’s picture troubleshooting instructions rather than another brand’s menu.

LG’s current support guidance identifies Energy Saving and picture mode as common causes of a dark LG picture, with menu paths that differ across webOS generations. It recommends checking Energy Saving and comparing a different Picture Mode on supported models. That is an LG-specific example; other manufacturers use different setting names and controls.

1. If your model has an Energy Saving, Eco or ambient picture control, check its manual and compare the picture with that feature temporarily disabled.

   If brightness returns, the automatic/power-saving setting contributed to the dim image.

   If that does not help: Restore the setting if there is no change. Do not disable unrelated features or assume every TV has an identical control.

2. Compare the current picture mode with another standard viewing mode, noting the original mode and any changed value.

   If the image becomes easier to see, the current mode or its associated processing may be part of the difference.

   If that does not help: Return to the preferred mode. A brighter mode is not automatically more accurate, and changing modes does not establish that the display is healthy.

3. On LG TVs, follow LG’s support page for the matching webOS generation before changing Energy Saving or resetting picture settings.

   The menu path and available controls correspond more closely to the model generation.

   If that does not help: If the version is unknown, identify the model first or ask LG; do not rely on the 2026 menu path for an older TV.

If the TV menu is bright but a cable box or console is dim, compare its output on a second input or display if available. Check the source device’s own picture mode and output settings using its manual. A TV can only display the signal it receives, and a change to the TV’s global brightness may make other sources look wrong while leaving the original issue untouched.

1. Compare one built-in TV app with one external HDMI source using the same picture mode where possible.

   If only the HDMI source is dark, focus on that device and its cable/input; if all sources are dark, return to the TV settings and picture test.

   If that does not help: If you cannot compare sources, tell support which source produced the symptom and whether the TV menu was visible at normal brightness.

2. If the picture is dark only on one broadcast channel, check another channel or service before altering the TV’s general settings.

   A source-specific picture or broadcast issue does not require a global brightness change.

   If that does not help: If multiple channels and menus are affected, save your observations and contact the manufacturer.

If the TV menu is too dark to read, one part of the screen stays dark across sources, or the built-in picture test is also abnormal, stop raising settings to compensate and contact the manufacturer. LG explicitly lists an unreadable menu or dark portion of screen as a possible internal issue. These symptoms need model-specific assessment; an online guide cannot determine which component is involved.

When requesting support, provide the model, whether the menu is dark, whether the dimness affects every source or only one, the picture-test result, and any setting you changed. This is more useful than saying only that the screen is ‘too dark.’

• How to fix a dark or dim picture on your LG TV — checked 2026-10-24
• How to troubleshoot TV picture and screen issues — checked 2026-10-24

Why is my TV dark even with the brightness turned up?

An energy-saving mode or picture mode may affect overall luminance, but a source-specific issue or display fault can look similar. Check another source, the TV menu and the built-in picture test before increasing more settings.

Should I use Vivid mode to fix a dark TV?

A brighter mode can change color and processing as well as brightness. Compare modes as a reversible test and choose the one you prefer; it is not a repair or proof that the display is healthy.

What if only part of my TV screen is dark?

If a region remains dark across menus and sources, use the manufacturer’s picture test and contact support. Do not open the TV to inspect internal lighting or panels.