TV picture has a blue or purple tint

1. Open the TV menu over the affected image and look at the menu’s white or neutral areas.

   If the menu looks normal but the programme is blue/purple, the source signal, app or external device becomes a stronger branch to check.

   If that does not help: If the menu is tinted too, compare the built-in picture test before adjusting color controls.

2. Try a second built-in app, broadcast channel or HDMI input and compare the same neutral color when possible.

   If only one channel or device has abnormal color, the signal or its connection may be involved. LG specifically advises checking the source when only certain channels/screens are affected.

   If that does not help: If several sources share the tint, continue with the TV’s picture test and color settings.

3. Run the TV’s Picture Test or Screen Self-Diagnosis using the maker’s model-specific instructions.

   LG says an abnormal test image indicates that the TV itself needs support; Sony also recommends its self-diagnostic function where available.

   If that does not help: If there is no test on your model, record the sources affected and contact the manufacturer for the right diagnostic.

1. Reseat the HDMI cable at the TV and device, then check whether the picture color changes.

   A stable picture after reseating suggests the connection path was involved.

   If that does not help: If the tint remains, try another TV input or a known-good cable one at a time, if available.

2. If the TV maker provides an HDMI inspection or cable test for your model, run it and follow its result.

   LG provides model-dependent HDMI inspection tools on some TVs and recommends checking the external device if the cable test passes.

   If that does not help: If your TV has no test, do not use a menu path from another platform; contact the device maker if the issue stays with that source.

3. Check the source device’s picture output settings using that device’s manual, without changing several color or range values at once.

   If the source was applying an unusual output mode, returning it to a documented default may restore normal color.

   If that does not help: Restore any changed value if the picture becomes worse. Avoid guessing RGB range or color-format settings without device-specific guidance.

When the same color cast appears in the TV’s menu, built-in apps and external inputs, the problem is not isolated to one cable box or stream. Run the built-in Picture Test. LG’s support guidance says to contact LG if the test itself looks blue or otherwise abnormal. Sony’s screen troubleshooting also treats odd colors as a separate symptom and directs owners to picture adjustment and diagnostics for its supported models.

1. If the test image is normal, compare the TV’s picture mode and color settings using the model manual, changing only one value at a time.

   If the cast clears after restoring a documented color/tint setting, record that setting for future reference.

   If that does not help: Restore the original value and ask the manufacturer for help; do not continue making broad color changes.

2. If the test image is also blue/purple, or the tint stays on menus after a restart, contact the TV maker with the test result and model number.

   Support can determine whether service is appropriate for that model and symptom.

   If that does not help: Do not open the TV or follow repair-forum advice to replace internal boards; the color pattern alone does not diagnose a component.

A blue tint over an otherwise visible picture is not the same symptom as a screen that shows only a solid blue field or a ‘no signal’ screen. If the display is a single color, check whether the TV is showing an input/no-signal screen and whether its menu appears. The guide here covers a visible picture whose colors are shifted; for a blank or single-color display, use the TV maker’s exact symptom page.

Tell support whether the tint appears on the menu, picture test, built-in apps and each HDMI input; include the TV model, connected device, cable/input tested and any recent changes. A clear description of where the cast appears is more useful than a guess about a panel or video board.

• LG TV Troubleshooting Abnormal Picture Color: Screen Displayed in Blue or Red — checked 2026-10-24
• How to troubleshoot TV picture and screen issues — checked 2026-10-24

Why does my TV picture look blue or purple?

The color may be shifted by the source, cable/input or TV settings, or the TV may show abnormal color across its own menu and test image. Compare multiple sources and run the built-in Picture Test if available.

Can an HDMI cable cause a blue tint?

A loose or faulty external connection can affect the signal. Reseat the cable and compare another input or cable, but if the TV’s own test is tinted too, contact the manufacturer.

Should I reset color settings or factory-reset the TV?

Check the picture test and model-specific color controls first. A picture-settings reset is narrower than a factory reset; follow the manufacturer’s instructions and note existing settings before changing them.