If Acer HE-4K15 Projector image is flickering, or has slanted sides on it, try the solution below to troubleshoot the issue.
• If possible, reposition the projector so that it is centered on the screen and below the bottom of the screen.
• Press the Keystone correction keys on the control panel or remote control until the image becomes square.
• Press “MENU” on the control panel or remote control to open the OSD menu. Go to “Image” > “H/ V Keystone” to make adjustments.
• Change the display color setting on your computer. 6 Image has vertical flickering bar
• Check and reconfigure the display mode of your graphics card to make it compatible with the projector. 7 Image is out of focus
• Adjust the focus ring on the projector lens.
• Make sure the projection screen is within the required distance. Refer to the “How to Get a Preferred Image Size by Adjusting Distance and Zoom” section for more information.
Read more:
Acer HE-4K15 Projector Wach 3D Movie Tips
How to Know Acer HE-4K15 Projector’s Left Lamp Hours?