Every fault below comes from real call-outs across Durban and surrounding areas. Some have a quick check you can try yourself before booking anyone — where that's true, we say so. When a visit is needed, the diagnosis is done with a signal meter, quoted before work starts, and covered by our 12-month workmanship warranty. New to this part? Start with the cctv camera component guide.
1. Camera shows no videoVideo Loss
What you'll see: A black screen or "Video Loss" tile where the camera picture should be — on one camera or several at once.
Why it happens: Power failure at the camera (dead 12V supply or PoE port), a damaged or waterlogged cable joint, a failed camera, or a recorder channel fault.
How we fix it: We test power at the camera end, then signal at each joint, and replace the failed link — supply, joint, cable run or camera — with the fault demonstrated before and after.
2. Blurry or soft image
What you'll see: Footage looks smeared or out of focus; number plates and faces never render sharply even in daylight.
Why it happens: A dirty or scratched lens dome, condensation inside the housing, focus knocked out on varifocal lenses, spider webs, or a camera pointed through glass.
How we fix it: Lens cleaning, refocusing and repositioning where needed; if moisture has been inside the housing long enough to etch the lens, we quote a replacement honestly.
3. Water inside the camera
What you'll see: Droplets or fog behind the lens glass, corrosion streaks from the housing, image degrading after every rain.
Why it happens: Failed housing seals, cable glands installed without drip loops, or budget housings that were never rated for coastal weather.
How we fix it: A wet camera is usually a countdown to failure: we dry and reseal where the board is still healthy, replace where it is not, and fix the cable-entry detail so the water does not come back.
4. Night vision not working
What you'll see: Perfect picture by day, black or unusably dark by night; or a milky white-out glow instead of a clean IR image.
Why it happens: Failed IR LEDs, a stuck IR-cut filter, IR bounce off a nearby wall or eave, or insects and webs reflecting the IR flood.
How we fix it: We test the IR array and cut-filter switchover, clear reflection sources, and replace the camera if the LEDs have aged out — checking the night image on site after dark, not just the spec sheet.
5. Flickering image
What you'll see: The picture pulses, rolls or flickers — often worse at night or when certain equipment nearby switches on.
Why it happens: Electrical interference onto the video line, a failing power supply sagging under load, ground loops between buildings, or mains-frequency conflict with LED lighting.
How we fix it: We isolate the source with a process of elimination — clean power, screened cable, ground-loop isolators — rather than living with a picture you cannot use as evidence.
6. Camera offlineOffline / Net Disconnect
What you'll see: An IP camera drops off the NVR intermittently or permanently; the app shows the channel as offline.
Why it happens: PoE budget exceeded on the switch, a marginal cable run over 100 m, IP address conflicts, or camera firmware crashing under load.
How we fix it: We measure the run, test the port and its power budget, fix addressing properly (reservations, not luck) and update firmware — so the camera stays online instead of "coming back by itself" until next week.
7. Image too dark or too bright
What you'll see: Faces silhouetted against bright backgrounds, blown-out driveways at noon, or a permanently murky picture.
Why it happens: Backlight the camera cannot handle without WDR enabled, wrong exposure settings, or a camera aimed into reflective surfaces or the sun's daily path.
How we fix it: We configure WDR/HLC properly, adjust aim to keep light sources out of frame, and where the scene genuinely defeats the sensor, recommend a camera whose dynamic range matches it.
Symptom doesn't match any of these?
Faults overlap — a "cctv camera problem" is sometimes another link in the chain wearing a disguise. Describe what your system is doing on 069 423 8290 (or WhatsApp a photo of the error screen) and we'll tell you which component it actually sounds like, free, before anything is booked.