Why is my LG OLED G1 picture not full screen?

Common causes include software issues, connectivity problems, and settings misconfigurations. Follow our guide to fix your LG OLED G1.

How do I fix LG OLED G1 picture not full screen?

Start by restarting your device, checking connections, and updating firmware. Our step-by-step guide provides detailed instructions.

When should I call support for my LG OLED G1?

If troubleshooting doesn't resolve the issue, or you encounter persistent errors, contact a certified LG technician.

LG OLED G1 Picture Not Full Screen

If your LG OLED G1 picture not full screen is disrupting your viewing experience, you're not alone. This issue commonly appears as black bars on the sides or top of your display, a shrunken image surrounded by borders, or content that doesn't fill the entire 65-inch or 77-inch Gallery Design screen. The LG OLED G1 features a unique aspect ratio system and advanced picture processing that sometimes conflicts with source devices, streaming apps, or broadcast signals. Fortunately, most cases of the LG OLED G1 picture not full screen can be resolved through your TV's settings without needing professional service. This guide walks you through the exact steps to restore full-screen viewing on your LG OLED G1.

Check Your Picture Size and Aspect Ratio Settings

The most frequent cause of the LG OLED G1 picture not full screen is an incorrect Picture Size setting. Your OLED G1 offers multiple aspect ratio modes that can stretch, zoom, or letterbox content depending on the source.

Access Picture Size Settings: Press the Settings button on your Magic Remote, then navigate to All Settings > Picture > Aspect Ratio (or press the ... button on the remote and select Picture Size directly).

Select 16:9 or Original: Choose 16:9 for standard widescreen content, or Original if you want to preserve the source's native aspect ratio. Avoid 4:3 or Zoom modes unless specifically needed for older content.

Disable Just Scan: If you still see borders, toggle Just Scan to Off. While Just Scan typically displays pixel-perfect images, some cable boxes and streaming devices output signals with slight overscan that this setting can expose as black borders.

Test Different Picture Modes: Try switching between Cinema, Standard, ISF Expert Bright Room, and ISF Expert Dark Room. Some modes apply different scaling algorithms that can affect how content fills your OLED G1 screen.

Verify Your External Source Device Output

When experiencing LG OLED G1 picture not full screen issues with connected devices like gaming consoles, Blu-ray players, or set-top boxes, the problem often originates from the source device's output resolution rather than the TV itself.

Check Source Resolution Output: On your connected device, verify it's outputting 3840 x 2160 (4K UHD) at 16:9. For PlayStation 5: go to Settings > Screen and Video > Video Output > Resolution. For Xbox Series X: Settings > General > TV & Display Options > Resolution.

Adjust Source Overscan Settings: Some devices have their own screen fit options. On Apple TV 4K, go to Settings > Video and Audio > Calibration > Zoom and Overscan. On Roku Ultra, use Settings > Display type > Auto detect and confirm the test pattern fills the screen.

Warning: Do not use the "Overscan" or "Screen Fit" options on your LG OLED G1 as a permanent fix for 4K sources. These legacy settings can cause image degradation and are not recommended for native 4K content on OLED panels. Always resolve aspect ratio issues at the source device level when possible.

Reset Picture Settings and Update Firmware

If the LG OLED G1 picture not full screen persists after checking individual settings, a picture reset or firmware update may resolve underlying software conflicts.

Reset Picture Settings: Navigate to All Settings > Picture > Additional Settings > Reset to Initial Value. This restores all picture parameters including aspect ratio controls to factory defaults without affecting your network or app logins.

Update WebOS Firmware: Go to All Settings > Support > Software Update > Check for Updates. The LG OLED G1 runs webOS 6.0 or later, and LG frequently releases patches addressing HDMI handshake and scaling issues that can cause picture size problems.

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Frequently Asked Questions

Why does my LG OLED G1 show black bars on movies?

Black bars on the top and bottom are normal for cinematic content filmed in 2.35:1 or 2.40:1 aspect ratios. This is not an error—your LG OLED G1 is displaying the movie correctly. Using zoom modes to remove these bars will crop the image and may cause burn-in risks with persistent black bar areas over time.

Can burn-in cause permanent black borders on my OLED G1?

Yes, prolonged display of pillarboxed (side bars) or letterboxed (top/bottom bars) content can cause uneven pixel aging on OLED panels. If you notice permanent dark areas where black bars typically appear, run the Pixel Refresher (found under All Settings > Support > OLED Care > Pixel Refresher) and vary your content to prevent further burn-in.

Why does only one app show a small picture while others are full screen?

Individual streaming apps can override TV picture size settings. Check the app's own display settings—for example, Netflix and Disney+ sometimes default to "Match Content" modes. Also verify the app's video quality settings; lower bandwidth streams may deliver 720p or 1080p content that gets pillarboxed on your 4K display.