KTC Monitor Screen Defects and Display Troubleshooting Guide

Use this page if you see pixel problems, light leakage, burn-in, image retention, ghosting, motion trails, lines, snow, blocks, or distortion on the screen.

Quick Answer

First check whether the issue appears in the monitor OSD menu or startup logo. If it appears there, the monitor itself is more likely involved. If it appears only from one computer, console, cable, refresh-rate mode, or game setting, the issue may come from the signal path or settings.

What Should I Do If I See Dead, Bright, Dark, or Stuck Pixels?

Clean the screen gently with a suitable screen cloth first. Dust or small marks can look like pixel defects in photos.

Then prepare clear evidence:

  1. Take one full-screen photo showing the entire monitor.
  2. Take close-up photos of the affected pixel area.
  3. Take photos on solid-color backgrounds such as black, white, red, green, and blue.
  4. Include the order number, purchase channel, model, and serial-number label photo.
  5. Note whether the issue appeared immediately after delivery or after a period of use.

Pixel issues are normally reviewed case by case based on photos, order details, model, purchase channel, and product condition.

Is Edge Light Leakage or Backlight Bleed Normal?

Slight light leakage can appear on some IPS gaming panels, especially on a pure black screen in a dark room. It is not always considered a product defect.

To help support review the case fairly:

  1. Take photos in normal room lighting while showing normal content.
  2. Take separate photos on a dark or black screen if needed.
  3. Do not overexpose the camera, because phone cameras can make light leakage look stronger than what the eye sees.
  4. Use the monitor's default brightness first.
  5. Include the model and serial-number label photo.

If light leakage is severe during normal use, send both normal-use photos and dark-screen test photos to support.

What Should I Do If Screen Burn-In or Image Retention Appears?

Image retention can happen when a static image remains on screen for a long time. In some cases it fades after normal use; in other cases support may need to review it.

Try this first:

  1. Turn off the static image or app that caused the retention.
  2. Use varied full-screen content for a while.
  3. Lower brightness from extreme levels.
  4. Turn off the monitor when not in use.
  5. Check whether the retained image fades.

If the mark remains visible after normal use, take photos on solid backgrounds and send support a short video.

Why Do I See Ghosting, Motion Trails, or Smearing?

Ghosting can come from response-time settings, MPRT(DAC), refresh rate, cable bandwidth, or the source device frame rate.

Try this test:

  1. Set the monitor to native resolution and a supported refresh rate.
  2. Set Overdrive or Response Time to a middle option, not the maximum option.
  3. Disable MPRT(DAC) or Motion Blur Reduction.
  4. Disable FreeSync, G-Sync, or VRR temporarily if the image also flickers or blacks out.
  5. Test another cable or input.
  6. Compare the same game or motion scene on another source device if available.

If ghosting improves at a moderate Overdrive level, keep that setting instead of the most aggressive one.

Why Do I See Lines, Snow, Blocks, or Distortion?

First check whether the problem comes from the signal or from the monitor itself.

  1. Open the OSD menu and see whether the lines or noise appear over the menu.
  2. Restart the monitor and check whether the issue appears on the startup logo.
  3. Reconnect the cable at both ends.
  4. Test another cable.
  5. Test another input such as HDMI vs DisplayPort.
  6. Turn off HDR, VRR, MPRT(DAC), FreeSync, G-Sync, and overclocking during testing.
  7. Test another source device.

If the distortion also appears in the OSD menu or startup logo, record that on video for support.

Related basic operations

What Should I Do If the Issue Continues?

Contact support if the artifact appears in the OSD, startup logo, multiple cables, or multiple source devices, or if reset and baseline testing do not improve the result.

What Should I Send KTC Support?

Prepare these details before contacting support:

  • order number and purchase channel
  • monitor model and serial number
  • full-screen photos
  • close-up photos of the affected area
  • short video showing the issue while it happens
  • note whether the issue appears in the OSD menu or startup logo
  • list of cables, inputs, refresh rates, and devices already tested