Quanan QA-883 surveillance camera disassembly and review

Today we are going to talk about a miniature analog camera QuanAn QA-883, which many people position as a “hidden surveillance camera“. In general, you can say so.

The manufacturer of this camera is the Chinese company QuanAn Electronic Technology Ltd. Despite the fact that they have made this camera, and hundreds of thousands of others like it, there is no information about the manufacturer on the Internet, and there is no normal information in the camera itself. So, separate passages. So I decided to fill the gap as far as it goes.

Click on the photo to enlarge!

Disassembling A CCTV Camera

So, this is a tiny black and white camera, but with a built-in microphone. It has a solid concrete body and an adjustable lens. It has a night shooting function. There are six LEDs on the sides of the lens. Steel swivel bracket on the body. For camera mounting.

A cable comes out of the camera, which in one place is divided into three cables with three connectors: white and yellow audio and outputs, type RCA (tulIPs). Red. Standard connector for powering the camera.

On the back of the camera is the QuamAn logo, then. B / W Cmos CAMERA, that means. That it is black and white, a CMOS type matrix. Then the model name: QA-883. And finally, the nutritional requirements. This is DC 9V, DC is needed from an external power supply.

There is a sticker on the end where the wire comes out. This is a warranty sticker. You cannot disassemble the camera by damaging this sticker. There are hieroglyphs on it. But there is a date of manufacture. September 2003. Yes, an old camera. Although it is still being sold now!

Since there is no exact information on this camera, so I will not say anything about its characteristics.

We disassemble the QuanAn QA-883 camera

Disassembly is simple. First, remove this steel mounting plate, then unscrew the two screws on the back and remove the back of the case.

Back cover. The body is generally made sturdy, from a thick alloy. Aluminum or zinc, I don’t know. There are no rubber gaskets, but there is a protrusion on the back cover that goes inside. Of course, this is NOT a complete protection, but at least something.

In front of the case, we see the following picture Small fee. And wires.

We take out the board without jerking too much. A microphone sits to the front on the hot melt glue. This is how the insides of this camera look like. The matrix has a soft square sticker along the edge, similar to microporous rubber. This gasket presses it against the square rim around the lens. And yet, the matrix is ​​closed with a square piece of cardboard, with a cutout in the middle. Take it away.

Marking on the board: OV5116D. Soldered: six LEDs, and two electrolytic capacitors, quartz or ceramic resonator. D13.500. A 5 volt voltage regulator, labeled U2 on the board. WS 78L05. The camera matrix is ​​soldered in the center of the board. Which one? This is a 1/4 inch monochrome analog CMOS sensor OV5116 manufactured by OmniVision Technologies. Giving resolution in the PAL system 352×288 pixels. There is a datasheet for it on the Internet. Read more in it. Despite its modest characteristics, and despite the fact that it is already 20 years old, it is still in production, cameras with this matrix cost from 18 to 28 on Aliexpress. And the matrices themselves cost 7-8. This is because the cameras are very unpretentious, extremely simple and cheap, while they give a relatively good picture.

But let’s continue. The reverse side of the board. There are some SMD elements here. Resistors and capacitors.

The microphone has no marking.

Lens. It is adjustable over a very short distance. Unscrewing it from the case is not so easy. But we twist it. This is how it looks.

We disassemble it. Unscrew the front ring, again with pliers. The lens is made of aluminum and after the screw connections are NOT the best.

The lens consists of eight elements: two. This is a body, four lenses. One spacer and one insert, which pushes the outermost lens away from the other three. Lenses are made of glass and have antireflection films.

This concludes the review of the QuanAn QA-883 surveillance camera. You can only add that exactly the same cameras were produced with different matrices and were color, the same cameras were produced under different brands and names. But all of this. Already yesterday. They cannot compete with modern surveillance cameras.

We launch the KPortScan program and carry out the following manIPulations:

  • Paste the copied IP ranges of cameras into the program window;
  • We set the port to 8000;
  • In the drop-down tab, select the Russian Federation;
  • Click on the “Load ranges” button;
  • We start the operation to clear the IP address of cameras by clicking on the “Start” button.
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The processing process will begin. The work done can be observed on the progress bar. As you progress, the green bar will grow to the right. The time for clearing the ai-pi address is approximately 30. 40 minutes.

Once the operation is over, the progress bar will be empty. Now close the KPortScan program, as we will NOT need it anymore.

Hacking IP surveillance cameras

Collecting IP address of cameras

To access the surveillance camera, you need the IP address of the camera, login and password. Here are the basic data for the IP camera to be displayed on the monitor.

To get the ones we need: the IP camera address, username and password, we start by searching for ranges. Go to the website: https://4it.Me/getlistIP and enter the name of the city in which we want to find all the IP address of the surveillance cameras. Click “Search”, below click on your city. At the bottom there will be IP address ranges that you need to copy.

IP camera. hacking and viewing

An IP camera in most cases is part of the surveillance of a certain area related to the property. In addition, organizations often use IP cameras on their premises. The ability to hack a surveillance camera, namely IP, is detailed below.

Hacking an IP camera using programs

To find and connect to an online camera, you need software. You can download the archive with the necessary programs from the cloud here. The archive contains 3 programs:

Hacking IP address of cameras

We go into the folder with the KPortScan program, open the text file “results” with a notepad, copy all the IPs and close the notepad. It’s time to launch the second program for hacking IP addresses of RouterScan cameras.

In the interface of the RouterScan program, clear the hammered IP address, for this GoPro simply click on the “X” button in the “Enter IP ranges to scan” item. The next step is to add our processed IP addresses to the program. Click on the “E” button in the same item Enter IP ranges to scan.

In the opened small window, paste the processed address copied from the text file “result”. Click on the “Start scan” button, thereby starting the scan.

The process will end when the green bar at the bottom reaches the extreme right position.

IP camera. connect and view

The last program from the iVMS-4200 archive (v2.8.2.2_ML) is used to view WEB-cameras. Next, you should install it on your computer and run.

After starting, go to the “Control Panel”. “Device Management”. “Add” tab. Now, for the IP camera to work, correctly Fill in:

  • Nickname. any name;
  • Address. IP address of the camera;
  • Port. leave 8000 unchanged;
  • User. login from IP camera
  • Password. password from the IP camera

Where to get addresses, login and password, see the photo below. After inserting, click on the “Add” button. Go to the tab “Control Panel”. “Main View”.

If everything is done correctly, the hacked IP camera will be displayed in the interface of the iVMS-4200 program. In case there is nothing on the screen, try the following IP camera address from Router Scan program.

My-chIP.Info. Diary of a beginner telemaster. Learn to repair CRT, LED and LCD TVs together. IP surveillance camera repair

06.10.2017 Lega95 0 Comments

Hello. IP surveillance camera Partizan IPO-VF1MP, which stopped working after a thunderstorm, is being repaired today.

A lot of such cameras are brought in for repairs, especially after weather disasters. Often, only the Lan interface burns out, but there are times when the processor fails, after which the repair of THESE cameras is NOT economically viable.

Trouble diagnosis

To begin with, I connected the DC output of the camera to the laboratory power supply, and Lan to the network card of the computer.

I described how IP cameras are connected in this article.

The current consumption was 200mA, while it is not static, but changes in different periods of time.

This indicates that the camera‘s firmware and processor is working. One of the main signs of a processor’s firmware is a click, about 30 seconds after the camera is powered up. Thus, switching from day to night mode is tested during boot.

After waiting a few minutes, the computer did not detect the LAN connection, and the Lan connection indicator on the camera itself did not light up. Based on this, I assumed that the Lan interface of the camera was out of order.

Disassembly and repair

The camera is very easy to disassemble. First, unscrew the cover with the protective glass, and then unscrew the three bolts that hold the entire IR illumination with the board.

Camera without protective glass

Unscrew the bolts and remove all electronics from the case.

PoE card with connected interface connectors.

The first board, to which all the wires are connected, performs the PoE (Power over Ethernet) function, that is, supplying power to the camera not from a DC plug, but using a twisted pair cable and special Poe equIPment. You can read more about this on WikIPedia.

Having unscrewed 4 bolts I got to the Main board itself.

Main board camera

Removing the lens. It is not necessary to do this, but just in case, I took it off.

I applied power to the camera again, determined that the 8710A microcircuit is very hot, which is the camera’s Lan interface. In a normal state, these microcircuits hardly heat up, so you need to change it unambiguously.

Having completely removed the board, I installed it on the holder. To protect the plastic elements, covered them with foil.

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Having applied flux to the soldering site, removed the microcircuit with an average air flow.

After cleaning the soldering point, and tinning the tracks with lead-containing solder, I started preparing a new microcircuit for installation.

Prepared soldering point

To do this, the microcircuit must be lubricated with flux, and all contacts must be properly.

Prepared microcircuit for soldering

I installed the microcircuit on the board, started heating it with an average flow of air, until the solder did NOT melt, and the microcircuit did NOT sit in its place. The temperature of the hair dryer was about 320 degrees.

Installed a new microcircuit on the board.

Also, after soldering the microcircuit with a hairdryer, you need to go through the contacts with a soldering iron in order to exclude Possible flaws.

After cleaning, it’s time to connect all connectors and check the camera.

After power on, current consumption dropped to 90 mA.

Camera consumption after installing a new chIP

The computer recognized the connection via the local network, although the LED on the camera did not work.

LAN connection indication LED

If you look closely, you can see a black dot in the center of the LED, apparently the discharge was so strong that it failed. Since the connector is NOT collapsible, there is no way to change it.

After installing the program for Partizan CMS camera, it was possible to successfully connect to the camera. The picture was displayed normal, the ping of the camera was without breaks.

Camera image

Also, I decided to check the switching to night mode, for this I covered the light sensor with my hand, which is located on the board with IR LEDs.

The camera switched to black and white mode, consumption increased, which means everything is working properly.

Night Mode Image.

Further, the camera was assembled and given to the owner. Thanks for watching and good luck with your renovations.

Focal

Camera lens type by focal length. The following options are distinguished here:

Type of shell

The body type describes not only its shape, but also some of the layout features that can affect the functionality of the product.

Model. Vertical viewing angle

Vertical viewing angle of the surveillance camera.

The wider the viewing angle, the more space the camera captures and at the same time, the finer the images of INDIVIDUAL objects in the frame. Therefore, when choosing according to this parameter, it is worth deciding what is more important. the ability to view a vast scene or the visibility of small details in a narrow field of view.

Surveillance cameras: characteristics, types, types

Connection

Minimum illumination

The smallest degree of illumination in the scene at which the camera is able to provide normal visibility. As a rule, this paragraph indicates values ​​for daytime operation (in night mode, the minimum illumination in many models can be zero altogether, because In such cases, the IR illumination is turned on, see “Design and Features”). And if the camera is capable of shooting in color, it usually means the lowest illumination required to obtain a color image.

The lower this indicator, the better the camera works in low light conditions, the brighter and more visible image it can provide in such conditions. At the same time, it should be borne in mind that in low light, the night mode is often preferable, and in the presence of the mentioned IR illumination, it is worth focusing rather on the range of its operation (see above).

There are comparative tables that allow you to evaluate the degree of illumination indicated in the characteristics from a practical point of view: for example, an indicator of 0.2 lux corresponds to a clear eye on a full moon.

Focal length

Camera lens focal length.

The focal length is the distance from the lens to the matrix, at which a clear image is obtained on the matrix (when the lens is focused at infinity). The angles of view of the lens primarily depend on this indicator (see below): the smaller it is, the wider the angles of view and the smaller the objects in the frame are (and vice versa). At the same time, it should be noted that the actual angle of view is determined not only by the focal length, but also by the size of the sensor (see above). In practice, this means that with different matrix sizes, lenses with the same focal length will have different working angles. Therefore, only cameras with the same matrix size can be compared with each other according to this indicator. Among surveillance cameras, lenses with focal lengths of 2.8 mm, 3.6 mm, 4 mm and 6 mm are considered popular.

In models with variable focal length (see above), in this case, the range is indicated from the minimum to maximum distance. Also, according to this data, you can deduce the optical magnification of such a lens: for this, the maximum value must be divided by the maximum (see below for more details).

Resolution (TV lines)

Resolution of the signal generated by the camera in TV lines (TVL).

A similar resolution designation applies to an analog signal; the number of TV lines in this case is the horizontal size of the image. The meaning of such recording is that in the analog formats PAL and NTSC, which are most often used in surveillance systems, the vertical size is always the same (625 and 525, respectively), therefore the frame size in different models of analog cameras differs only horizontally Accordingly, the higher the TVL number, the more detailed the image will be, the more small details will be noticeable on it. On the other hand, to use all the capabilities of a camera with a large number of TV lines, you will also need a screen that matches these capabilities; for more details on compatibility with the screen, see specialized sources.

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As for specific figures, the value of 500 TV lines or less is considered very small, 500. 600 TV lines. modest, 600. 700 TV lines. average, 700. 800 TV lines. above average, and in some models this number may even exceed 800 TV lines.

Repair of the most common malfunctions of surveillance cameras

Repair of surveillance systems may be necessary for a number of reasons: the development of the equIPment resource, its poor installation, external influence (weather conditions, human factor) and many others.

Where to go to repair a surveillance camera?

Today there are many service centers and companies that provide quality equIPment repair services.

Guide to troubleshooting the most common faults of surveillance cameras and the cost of repairing the device

A modern surveillance camera is a complex of mechanical, optical and electronic parts, which are enclosed in a compact device that operates on the basis of software.

Therefore, the repair of surveillance cameras is associated with great care. Any, even the most insignificant, error in disassembling the device or dismantling its SEPARATE elements can lead to serious enough damage.

Removing fogging of the lens glass

If the glass of the camera lens is fogged up, there is no point in eGoPro. This will NOT correct the situation, as the main causes of fogging (low surface temperature and high humidity) will remain. It is worth wIPing the camera only if stains and drIPs appear on the glass due to fogging.

What to do if the camera lens glass is fogged up:

  • Reduce humidity (for example, move the camera to an air-conditioned room).
  • Heat the device to air temperature either (you can put it in the sun).

Also moisture can get inside if the chamber is not sealed. Therefore, it is not recommended to change the glass on a fogged chamber. If condensation appears inside the chamber, the “sweating” of the device can take much longer.

Lack of power

During operation, the power supply loses power and if the device does not have enough power, it does not turn on. If the device turns off exclusively at night, then the malfunction lies in a voltage drop when the infrared camera illumination is turned on.

If the camera power supply is an injector or PoE switch, you need to try to replace the injector or use a different switch port.

You can also protect the server from power surges, bought an uninterruptible power supply, but few users do this. As a rule, the power supply unit has a short service life, since it is subject to heavy loads.

How to disconnect and disassemble the camera?

The first and easiest way is to power off the camera. To do this, you just need to break the power supply circuit of the device. Modern surveillance systems include many components with a web interface, which can be controlled using a special program.

Today, there are systems with a set of software with which you can perform many different functions:

  • Turn off backlight.
  • Turn off the sound.
  • Abort the recording function.
  • Shut down the system completely.

It will be difficult to disassemble the camera, for this you need:

  • Unscrew the cover with protective glass.
  • Unscrew the three bolts that hold the IR illumination with the board.
  • Remove electronics from housing.
  • The board, to which all available wires are connected, performs the PoE function. It supplies power to the device using twisted pair as well as dedicated Poe equIPment.
  • Further, by unscrewing four bolts, you can get to the Main board itself.

IP Server Failure

The surveillance server is a complex technical device, the main function of which is to store the footage. This is quite convenient when there are many IP cameras in the system.

During the recording process, information is transported via the Internet and arrives at third-party computers. Users are provided with personal access to them.

Accordingly, all records are saved on one medium: convenient, but somewhat more expensive than conventional recorders.

However, if the IP server fails, interruptions are inevitable. The server performs Instant switching to the backup unit.

Fault tolerance of network surveillance systems is a rather serious problem, which is unlikely to be solved on your own.

Matrix burnout

With overvoltage (for a 12-volt chamber. more than 14 volts), the entire chamber burns out. This process follows the scenario. initially the input circuits for the power supply burn out, and after that the matrix itself. In the event of such a breakdown, the camera module will need to be replaced.

Such home repairs are almost impossible. But, with experience in repairing electrical devices, you can solder damaged parts, replace ports or restore external tracks.

Failure (swelling) of capacitors

Very often the cause of a malfunction is “swollen” or lost capacitors on the motherboard. A swollen capacitor is a breakdown that requires replacing a faulty capacitor or installing additional high-frequency capacitors to damp impulses.

The capacity of the new capacitors must correspond to the replaceable ones or be somewhat larger, but not less, otherwise rIPple will be skIPped. In addition, it is worth observing the polarity indicated on the capacitor and the board.

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