CCTV Maintenance Checklist: What to Check and How Often

A CCTV system needs regular checks to keep recording when you need it. Check playback and the recording calendar every week. Clean lenses and check camera angles every month. Every quarter, check the hard disk’s health, the date and time, firmware and passwords. Once a year, have an installer inspect cables, power, mounts and outdoor seals.

In our experience, most CCTV problems we are called out for are not sudden failures. A camera was knocked out of position, a hard disk stopped recording weeks ago, or nobody remembers the admin password. You only find out when you need the footage. This checklist is the routine we suggest to homes, HDB flats, condos and small businesses in Singapore. Use it as a printable list or hand it to whoever looks after your system.

Key Takeaways

• The most important check is playback, not live view. Live view can work while the recorder is not recording.
• Check the recorder’s hard disk health every quarter. Many Hikvision recorders have a built-in S.M.A.R.T. self-test.
• Singapore’s heat, rain and lightning are hard on outdoor cameras, connectors and power supplies. Inspect them at least once a year.
• Keep firmware up to date and use strong passwords. The Cyber Security Agency of Singapore (CSA) lists both as basic protection for connected devices.
• Businesses should make sure someone can actually export footage. Under the PDPA, footage can be the subject of an access request.

What does a CCTV maintenance checklist include?

A complete CCTV maintenance checklist covers five areas: image quality (clean lenses, correct angles, working night vision), recording (playback, recording schedule, retention days), storage (hard disk health and capacity), network and security (remote access, firmware, passwords), and physical condition (cables, connectors, power supplies, mounts and seals). Each area has its own check frequency.

Here is the full schedule at a glance. The frequencies are our recommendation as an installer, not a legal requirement. Busy shops, sites with many outdoor cameras and dusty or coastal locations may need checks more often.

How often should CCTV be serviced?

For most homes and small businesses in Singapore, we suggest a professional CCTV service once a year, plus quick self-checks by the owner every week and every month. Systems that protect high-value stock, cash counters or busy premises benefit from a professional check every six months. Always check the system after a thunderstorm, a power trip or renovation work.

The weekly and monthly checks take a few minutes and need no tools. The yearly service is where a technician opens junction boxes, checks connectors and power supplies, and tests each camera at the recorder.

What should I check every week?

Every week, open playback on your recorder or phone app and watch a short clip from each camera from the day before. Then look at the recording timeline or calendar for gaps. A camera can show perfect live view while nothing is being saved, so playback is the only check that proves the system is recording.

Common reasons for gaps we see:

• The hard disk is full and overwriting is switched off, or the disk has failed.
• The recording schedule was changed to motion-only and motion detection is too insensitive.
• A camera lost power or network for a period and nobody noticed.

If you find a gap, our guide to recording and storing CCTV on a hard disk explains the recording settings. For more fault patterns, see common CCTV camera problems and solutions.

How do I clean a CCTV camera lens safely?

Wipe the lens or dome cover gently with a clean, soft, dry microfibre cloth to remove dust and spider webs. Do not use abrasive cloths, paper towels or strong household cleaners. Cleaning methods differ between models, so check the cleaning section of your camera’s user manual before using any liquid.

In our experience, outdoor cameras in Singapore collect dust, insect webs and water marks quickly, especially near roads, construction sites and trees. Spider webs in front of the infrared lights are a common cause of blurry or “foggy” night images, because the web reflects the infrared light back into the lens. While you clean, check that:

• the camera still points where it should (wind, cleaners and renovation work often knock cameras);
• the image is sharp, with no condensation inside the dome;
• night vision works on outdoor cameras (look at last night’s playback).

For more on night images, see our guide to CCTV night vision.

How do I check my CCTV hard disk health?

Open the recorder’s storage or HDD menu and check three things: the disk status reads normal, the free space or overwrite setting is correct, and the S.M.A.R.T. self-test passes. Hikvision describes S.M.A.R.T. as an HDD monitoring system that detects reliability indicators “in the hopes of anticipating failures” (Hikvision documentation).

On a Hikvision NVR, go to Maintenance > HDD Operation > S.M.A.R.T., select the disk, set the self-test type and click Self-Test. Menu names vary by model and firmware, and Dahua recorders use their own menu names, so check the manual for your model.

Two points from Hikvision’s documentation are worth knowing:

• There is an option to “Continue to use the disk when self-evaluation is failed”. We advise against relying on it. A failed self-test is a warning to back up important footage and plan a replacement.
• Some Hikvision recorders have a Health Detection page (Maintenance > HDD Operation > Health Detection) that shows more detail than S.M.A.R.T. Hikvision says it supports 4 TB to 8 TB Seagate disks made after 1 October 2017 (Hikvision documentation).

Also check how many days of footage the disk actually holds. Look at the oldest recording in playback. If it holds fewer days than you need, our CCTV hard disk calculator and guide to how much storage you need help you size a bigger disk.

Do CCTV systems need firmware updates and password checks?

Yes. Recorders and IP cameras are connected devices, and the Cyber Security Agency of Singapore advises users to “Update Firmware and Software Regularly” and to use strong passphrases with multi-factor authentication where possible (CSA advisory AD-2024-012). Check for updates every quarter and remove accounts that are no longer needed.

CSA’s advisory (5 June 2024) also covers passphrases of 12 or more characters, checking whether each device needs internet access, disabling unused features and restricting physical access. For a CCTV system, that means:

1. Change any default or shared password and keep the admin password somewhere safe.
2. Give family members or staff their own app access through device sharing instead of the admin password.
3. Remove access for ex-staff, ex-tenants or old phones.
4. Install firmware only from the manufacturer or your installer, and note the version before updating.
5. Keep the recorder in a locked cabinet or room where possible.

Our guides to changing a Dahua recorder password, the Hik-Connect app and the DMSS app cover the app side.

Why does Singapore’s weather matter for CCTV maintenance?

In our experience, Singapore’s heat, heavy rain and frequent thunderstorms wear out the parts around outdoor cameras first: water gets into connectors, power supplies fail after surges and exposed cables crack. NEA notes that the inter-monsoon period is characterised by “higher lightning activity” (NEA advisory, 1 April 2026). That is why the yearly cable and power check matters. What to look at:

• Connectors and junction boxes: water getting into a poorly sealed connector causes flickering, a lost picture or a dead camera.
• Power adapters and supplies: they run hot all day and are often the first part to fail after a power surge.
• Cables: cables exposed to sun or chewed by pests crack over time. Our guide to security camera cables explains the types.
• Mounts and brackets: loose screws let a camera drift out of position.

After a thunderstorm or power trip, check that every camera shows an image and that the recorder restarted recording. A small UPS for the recorder and network equipment keeps recording through short power cuts; ask your installer whether one suits your setup. Poor installation choices also shorten system life, as we explain in why home CCTV doesn’t last long.

What should businesses check for PDPA?

Businesses should check that footage is protected, kept no longer than its purpose needs, and that someone can find and export it when asked. The PDPC’s CCTV guidance treats footage of identifiable people as personal data (PDPC guidelines, para 4.33). The PDPA requires reasonable security arrangements for it (s 24) and limits how long it is kept (s 25).

A 2025 PDPC decision shows why this belongs on a maintenance checklist. In Case No. DP-2405-C2318 (19 May 2025), a condominium’s MCST received an access request for CCTV footage. Its managing agent could not download the footage because it did not have the administrator credentials, and the system only kept 17 days of footage, so it was overwritten before the request was resolved. The PDPC found the MCST in breach of section 12 of the PDPA for failing to put proper processes in place to handle access requests, and directed it to set up procedures for managing CCTV footage when such requests come in (PDPC decision).

So, as part of your quarterly check:

• confirm who holds the admin login and that they can export footage to USB or phone;
• confirm how many days of footage the disk keeps, and that this matches your documented retention period;
• check that CCTV notices are still in place and readable.

Our PDPA CCTV guide covers notices, access requests and retention in detail.

Can I maintain CCTV myself or do I need a technician?

You can do the weekly, monthly and most quarterly checks yourself: playback, lens cleaning, angles, disk status, passwords and firmware notices. Leave cabling, power supplies, ladder work, opening junction boxes and replacing hard disks to a trained installer, especially for high outdoor cameras.

If a check fails and you can’t fix it, our remote support guide explains how we can help over the internet before a site visit.

What affects CCTV maintenance cost in Singapore?

CCTV maintenance cost depends on the number of cameras, how high and how spread out they are, whether parts such as hard disks or power supplies need replacing, and whether you want a one-off visit or a yearly contract. Prices vary between installers, so ask for a written quote that lists what each visit includes.

When you compare quotes, check whether the visit includes a written report, lens cleaning for every camera, hard disk health checks, firmware updates and a test of footage export. For new installations, see our CCTV installation and cost guide.

Frequently asked questions

Why is my CCTV live view working but there is no recording?

Live view only shows the camera is connected. Recording also needs a working hard disk with free space or overwrite turned on, and a recording schedule. Check the disk status and the recording schedule in the recorder’s settings, then check playback again.

How long does a CCTV hard disk last?

It depends on the disk model, temperature and how much it records, so there is no fixed number. That is why we suggest a quarterly S.M.A.R.T. check. Replace a disk that fails its self-test or shows errors, and back up any footage you need first.

Should CCTV be on 24 hours a day?

Yes, for most homes and businesses. Most recorders are designed to record continuously or on motion around the clock. What matters is that the recording schedule matches what you need, and that the disk holds enough days of footage.

Do I need to clean my CCTV cameras?

Yes. Dust, water marks and spider webs blur the picture, especially at night when infrared light reflects off them. A gentle wipe with a soft, dry microfibre cloth once a month is usually enough for reachable cameras.

Does an HDB home CCTV need maintenance?

Yes, the same checks apply: playback, lens cleaning, disk health and passwords. If your camera covers the corridor, also make sure it still follows the current rules in our HDB doorbell camera guide.

Need help with your CCTV?

CCTVSG installs and supports CCTV systems for homes and businesses in Singapore. If your system is not recording, a camera has gone offline or you want a check-up, contact us or request a quote.

Sources

• Hikvision, S.M.A.R.T. Detection (NVR documentation): https://enpinfo.hikvision.com/hkwsen/unzip/20230410194813_20373_doc/GUID-A0A40CD3-9BB0-430D-BD63-8A4C626E8CEB.html
• Hikvision, HDD Health Detection (NVR documentation): https://enpinfo.hikvision.com/hkwsen/unzip/20230410194813_20373_doc/GUID-C3C13B14-B672-42CE-9A19-81C5E78DE557.html
• Cyber Security Agency of Singapore, Advisory AD-2024-012 “Protecting Your IoT Devices” (5 June 2024): https://www.csa.gov.sg/alerts-and-advisories/advisories/ad-2024-012/
• NEA, “More Thundery Showers In The First Fortnight Of April 2026 With Onset Of Inter-Monsoon Conditions” (1 April 2026): https://www.nea.gov.sg/media/news/advisories/index/more-thundery-showers-in-the-first-fortnight-of-april-2026-with-onset-of-inter-monsoon-conditions
• PDPC, Advisory Guidelines on the PDPA for Selected Topics (revised 23 May 2024), para 4.33: https://www.pdpc.gov.sg/-/media/files/pdpc/pdf-files/advisory-guidelines/ag-on-selected-topics/advisory-guidelines-on-the-pdpa-for-selected-topics-%28revised-may-2024%29.pdf
• Personal Data Protection Act 2012, section 24: https://sso.agc.gov.sg/Act/PDPA2012?ProvIds=pr24-
• Personal Data Protection Act 2012, section 25: https://sso.agc.gov.sg/Act/PDPA2012?ProvIds=pr25-
• PDPC, Decision in Case No. DP-2405-C2318, Management Corporation Strata Title Plan No. 4599 (19 May 2025): https://www.pdpc.gov.sg/-/media/files/pdpc/pdf-files/commissions-decisions/gd_mcst-4599_19052025.pdf