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How to Repair Security Cameras?

First and foremost, we'd like to state that any and all of what we're about to discuss can be harmful to your camera if done improperly. Having said that, you should not attempt any of the following repairs unless you are confident in your ability to properly do so. Also, It should go without saying that your camera should be disconnected from power before attempting any of this. Please feel free to leave any comments and/or questions in the comments section.

We do not sell Infrared LED boards or other parts. This guide is for informational purposes only.

Replacing the Infrared LED Board

Replacing an Infrared (IR) LED board is not terribly complicated. Often times, it will be the easiest to access of all internal components of the whole camera. After determining and then removing the portion of the camera body that needs to come off in order to access the IR board, you'll need to detach the IR board from the rest of the housing. This is done easily by removing the screws that secure the IR board to the camera body and the remaining "guts" inside the camera. You can expect find between two and seven retaining screws. After this, you'll notice that you're able to pull the board away from the remaining components, but the black/red colored power cable will still be attached to a white colored socket on the back of the IR board. While pulling from the base of the connector, remove the power cable from the IR board. At this time you're free to dispose of the damaged board and drop in the new one in reverse order.


Replacing the Lens inside a security camera

From here on out, don't be surprised if you find yourself needing to nearly completely disassemble the camera in order to gain access to the components you need. Your lens, whether it's a fixed or adjustable type lens, is no exception to this. Your IR board will likely become your first hurdle; in almost all cases it will need to removed entirely. In the case of fixed lenses, this will probably be the only thing in your way. From here, you'll likely be able to loosen a single set screw and the lens will thread right off it's mount. image-sensor-lens-mount

The manually adjustable lenses can be significantly more complicated if this is your first rodeo. In certain cases, manually adjustable lenses have gear "sleeves" that tighten down around the zoom and focus portion of the lens. They work alongside another set of gears that are connected to your cameras external adjustment knobs. When replacing a lens with this type of configuration, those sleeves will need to be removed and placed on your new lens. Proper gear alignment is crucial as your camera will no longer be able to be adjusted until you get this step right. Manually adjustable lenses that contain no external adjustment knobs, and are instead adjusted by turning the lens itself with the use of small set screws, can be removed just as easily and in the same fashion as a fixed lens.


*Your lens may have a foam ring seated around it. As unlikely as it may seem, this ring is crucial to camera performance. Be sure to put this foam ring back into its proper place.

Replacing the CCD or CMOS Image Sensor

An image sensor is easy enough to locate in a security camera. It will be directly attached to your lens and will also always contain a square, or rectangular, piece of glass directly in the center of the board. It should go without saying then that your lens will obviously need to be removed; this will most commonly mean removing your IR board again as well. Once the other components have been removed, you'll either need to detach your image sensor from the body of the camera, and/or from the camera's power board if it contains one. Any cables will also need to be detached from the image sensor at this time.


*While installing your new image sensor, be extremely careful not to jar or smudge the glass piece located in the center of the board.

Power Board

Replacing your power board can be very hit or miss. It's usually positioned in a sort of "caboose" fashion at the back of the camera. When this is easy, you're able to pull out all of the internal pieces of the camera at once after disconnecting them from the cables coming from the pigtail. This will expose the power board at the rear of the assembly making it very easy to disconnect and swap with your replacement. Things can easily go the other way; it's not uncommon for internal components not to be connected together or not in this way. These scenarios will mean removing every component between you and the power board. This can quickly turn into a game of Legos without an instruction booklet. For that reason, we'd recommend taking a video or pictures of your disassembly process to make reassembly easier. Also, be sure to take note of which cables are connected to where on these boards and how they're configured on the pins.


is a Technical Support Manager at CCTV Camera World, a leading Security Camera distributor located in Buffalo, NY. His area of expertise is in designing professional security camera systems for medium and large scale businesses, schools, and government projects.


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22 thoughts on “How to Repair Security Cameras?”

  • power unit is good but o image come out to the creen What is the trouble?

  • Make sure your video wire (yellow wire) is connected to the right portion of the connector.

  • I like to repair a camera,sensor not working,where do you get the parts.

  • You would have to contact your camera manufacturer or try ebay.

  • Daniel mcDonald May 22, 2016 at 4:19 pm

    I have a bad short in my camera... One minute it is talking to the modem perfectly and the next It stops and the IP address disappears...The only way I can get it to work is to unplug it and plug it back in, it only lasts for a few minutes to maybe a day before I have to do it all over again.I have it hard wired so I have a great signal from the modem.Can you help me?Thank you for your help...Daniel McDonald

  • CCTV Camera World May 22, 2016 at 9:09 pm

    Where was the camera purchased?

  • Daniel mcDonald May 22, 2016 at 10:42 pm

    I purchased it through Amazon, I have been in contact with the manufacturer of my camera and they are sending me a replacement... I would like to fix this one so I can have both active...They told me that they can't do anything since it is not under warranty...I hate to throw it away since it is a $200 camera... I had it 2 years.

  • CCTV Camera World May 23, 2016 at 1:04 am

    Cameras are nearly impossible to fix for companies other than those manufactured by the Company itself. It has to do with different chipsets, programming, and wiring connections. Please consult with the manufacturer for guidance on how to fix the camera that you have.

  • Daniel mcDonald May 23, 2016 at 2:36 am

    Ok, thank you so much for your help and understanding....

  • I purchased a home8 security system and do not want to pay them for Monitoring Is there a way to change a chip in the wireless cams so One can view it thru another program?

  • Folayan 'ebe' Oluwatosin October 29, 2017 at 11:57 am

    hi, the article is so useful and helpful for my study. pls how can i get this components to buy. pls kindly inbox me as well [ ]

  • Where did you find the IR illuminator board with the 4 pin connector? I can only find boards with 2 pin connectors.

  • CCTV Camera World December 15, 2017 at 1:36 pm

    It is from a broken camera

  • Stayouttadabunker January 10, 2018 at 11:08 pm

    Hi,Need some help on identifying a blown chip on a power board.I accidentally applied 24vac to a 12vdc mini dome cam.Yes i know, that was not a good move...lolI have no idea what make the ptz dome is.Got it online from China.Luckily I purchased 2 of them so I'm presently using the other one that I didn't burn out.The only thing it says on the box is "Mini IR High Speed Dome".The circuit board has this etched onto it...>>> "IR-POWER-01-V13 and is dated "2014-09The small power distribution circuit board on top of the dome under the mounting arm with the 3A/250V fuse didn't protect the V1.3 circuit board from failing but it did protect the camera because I swapped the good circuit board from the other camera to this one and the dome booted up normally.Does anyone know what chip is at location "D2"?That chip fried but I retrieved the markings about the burnt chip from the good dome's circuit board and I see: "1605 BV" I've searched and searched Mouser, Digikey, Allied Electronics and can't seem to find a match for this chip.Of course, any help from you guys on this little problem of mine would be awessome! I uploaded an image of the power board, a pic of the dome camera, and a pic of the blown chips.My guess is that the blown chip is some sort of a rectifier IC component but I'm not sure. https://uploads.disquscdn.c... https://uploads.disquscdn.c... https://uploads.disquscdn.c...

  • CCTV Camera World January 11, 2018 at 10:05 am

    We can't comment on that as that is not a camera we make. Please contact the vendor you purchased from in China for further assistance.

  • Hi Don, what is likely to fail if you connect a 12v eyeball camera with IR to 24v? I'm thinking a capacitor instead of the whole board.

  • CCTV Camera World February 12, 2018 at 1:46 pm

    Usually it is the image sensor board itself.

  • Thanks

  • Hello there....I need to know is that okay to replace 24 IR led board with 48 IR led board. Because cam originally came with 24 IR leds. So is that okay to change with 48 or 36 IR leds board? Power supply is 12V and 1A. Any power issue??Thank you so much!!!

  • CCTV Camera World March 6, 2018 at 10:59 am

    If the connector on the IR board fits what you have, then there shouldn't be an issue.

  • Thank you so much :)

  • John Safc Walterz June 5, 2018 at 7:25 pm

    hi i am looking at two cctv what is dome ptz but the cables have been cut could you point me into what i will need plese