WYZE WYZE CAM V4 Color Night Vision Purple Tint

IR-Cut Filter Switch Assembly

The IR-Cut filter is a mechanical shutter moved by an electromagnetic solenoid to block infrared light during color operation. A purple tint confirms the filter is stuck in the retracted position, allowing IR wavelengths to saturate the red and blue pixels of the CMOS sensor. This is usually caused by mechanical friction in the sliding track or a weak solenoid coil that cannot overcome the static friction of the filter pane.

CMOS Image Sensor Board

In rare cases, a failure in the image signal processor (ISP) or a cracked solder joint on the sensor's RGB data lines can cause improper color matrixing. If the IR-cut filter is verified to be moving but the tint persists, the sensor's ability to interpret color values has likely been compromised by thermal stress or manufacturing defects.