Common CCTV Faults & Causes
Cameras showing 'no video' usually a damaged Cat5/Cat6 cable, failed PoE port, or end-of-life camera. NVR not recording full hard drive, failed hard drive, lost network link, or wiped configuration. Image flickering or rolling failing power supply, ground-loop interference, or end-of-life sensor in the camera itself. Remote viewing broken ISP router replacement (very common), changed broadband account, or app permissions reset. Night-time footage gone dark failed IR LEDs (typically after 5–8 years of continuous use).
