DIY ip camera repair

In detail: do-it-yourself repair of ip cameras from a real master for the site my.housecope.com.

Video surveillance of the property is the most effective way to keep the property safe and sound. However, like any other device, the surveillance system can fail. And since the video surveillance system includes many devices, the number of problems is quite significant. Typically, parts of the complex are: one or several cameras of different types (cameras with built-in lens, dome cameras, in protective casings, covert surveillance cameras), video recorders, special cards for capturing images, a power supply unit and a drive on which the obtained images are recorded. With so much equipment, it's no surprise that IP cameras can fail.

The main reasons for equipment inoperability and breakdowns most often include:

Lack of maintenance, improper performance or maintenance out of time;
Incorrect installation of video cameras, mistakes when laying the control line;
Deterioration of the main components of the video camera;
Damage due to weather, mechanical damage from hooligans, branches, etc.
Defective product;
Too high or too low temperature at the installation site, high humidity;
Failure of the power supply;
Voltage surges and noise in the power supply or mains.

Most of the problems in the operation of video cameras are due to damaged wires or cables, which can be easily changed with a soldering iron.

If you have a video surveillance complex, for which some of the IP cameras no longer function, you should start by checking the video camera's uninterruptible power supply. It is he who most often fails.

In order to check the performance of the camera, it is necessary to test the performance of the infrared lamps installed around the camera to ensure shooting at night. If you cover these lamps with your palm and they do not light up, then the power supply of your surveillance system needs to be replaced. Another way to check if the camera is working is to connect its power supply to a voltmeter. If the output voltage is approximately 10-15 volts. If there are no problems with the power supply, you need to check the connector of the DVR. The non-working camera is connected to another connector, and if after that it works, then the DVR itself needs to be repaired.

Video (click to play).

When checking an IP camera, they also use a computer to which it is connected with special software to diagnose such problems. In this case, the camera must be displayed on the local network of your personal computer. It may be necessary to check the integrity of the cable with a tester. When the wire is short-circuited, without power supply, the tester will show that the resistance is equal to infinity. This means that somewhere your cable has broken, causing grounding.

If after all this your ip-camera does not work, then for further repairs you will need to disassemble the video camera. To do this, it is necessary to remove the housing, fixing elements, infrared lamps. After parsing, you need to inspect the camera circuit for swollen capacitors. If they are found, replacing them with elements with similar characteristics can help, and we check for heating when turned on. If after that the ip-camera does not work, you can try to connect the cable from another working camera to the non-working one. Broken cables in the tail of the device are a common problem. You can also try replacing parts of a non-working camera with modules that are working. Thus, you can quickly find problematic modules and search for them.When assembling, after this, it is necessary to carefully fold everything in the same order and apply sealant at the points of attachment of the parts. This is required to avoid liquid getting inside the ip camera.

The most frequent breakdowns in the operation of video surveillance systems are:

Problems with supplying power to any part of the video surveillance system;
Damage or wear of control elements;
Inoperability of the server for receiving data from the IP camera;
Defocusing video cameras;
Lens fogging;
Failure of the microphone;
Problems switching to different shooting modes;

Moreover, server failures are very costly and difficult to repair. It is almost impossible to do it with your own hands, and the cost of repair work is close to the price of buying a new kit.

If the device does not send a signal and does not transmit an image to a working computer, it is necessary to check the electronic controls of the ip-camera and replace them with working ones. This can be done with your own hands. You can check which element is out of order using a tester, which is sold in any electronics store.

When the ip-camera is working, and there is a control menu, but the image is missing, the problem most often consists in the breakdown of the camera matrix. The matrix of CCTV cameras is characterized by frequent burnout. They are sold in many electronics stores. Using a soldering iron, you can quickly replace it with your own hands.

If the video camera works, accepts all incoming commands, but the control menu and the image from the ip-camera are not displayed on the screen, the problem most often consists in a failure or malfunction with the video output card. It is also sold in electronics stores. To fix the problem, you will need to replace it.

Does the IP camera keep shutting down or rebooting at short intervals? Most often this happens due to overheating of microcircuits. In such cases, most often the source of the problem is or problems with different versions of the firmware on the camera itself and the software of the computer to which the image is received. It is necessary to update the version of software or firmware on the camera. Also, the problem may be in the wrong place for the ip-camera, if yours is not equipped with a protective casing, then it may overheat in direct sunlight. The best solution is to move it to a shaded area.

In case of problems with the rotation of a PTZ camera, the most common source is rust on the gear wheel of the rotating mechanism or its erasure. The best solution is to replace it.

This malfunction can occur due to cable problems. Check the cable connections to the device inputs and how well they are insulated. If this does not help, try replacing the cables.

There are no problems in the operation of ip cameras, and the footage is not saved.

The problem in this case is with the recorder's internal storage. Try to test the connection of the ATA / SATA cable to the corresponding port on the hard drive. If that doesn't work, try connecting it to your computer and formatting and defragmenting it. If the problem persists, the best solution is to replace the hard drive;

It is caused by improper operation with the infrared (IR) illumination of the ip camera. To fix the problem, try to disassemble it and check all contacts between the light sensor and the camcorder. The cable may have been broken in some place. It is possible to try to replace the cable between the IR module and the input connector. If this does not help, you will need to replace the IR module.

First of all, check if the power is going to the DVR. If there are problems in the operation of his power supply. This can be done with a multimeter. Try replacing the dash cam power supply with a new one. If this does not help, then the best solution would be to take it to the service center for repair.It is a complex set of circuits, during the repair of which you can easily touch the unnecessary, therefore it is better to entrust its restoration to specialists.

Today I want to share with you the experience of repairing a CCTV camera. Such devices are called differently: IP or online cameras, Internet cameras, Internet web cameras, etc.

We analyzed a similar device, but in a higher class, in an article devoted to organizing online broadcasts over the Internet (or a local network). Here on our "operating table" we also found a video surveillance device from D-Link with model number DCS-2102. Here is:

What happened to him? And an unpleasant thing happened: we accidentally short-circuited it in nutrition! As a result of the short circuit, white smoke with a characteristic chemical odor emanated from the inside. It is clear that after this, the future repair of the CCTV camera was provided!

It is interesting that after all these visual “special effects” the IP camera did not completely lose its functionality, but blinked with an LED, responded adequately to the reset button and even went into operation mode for a short time (the LED color changed from red to green), but after that turned red again.

I confess that I had not been involved in the repair of CCTV cameras before, so it was even interesting for me to see how it all works inside. Which I did! We unscrew the screws holding the two halves of the plastic case of our IP camera and see the following structure there:

The photo above shows two boards connected to each other by means of several pin headers. These are the control board with the processor (bottom) and the lens board. On the right we can see an empty slot for an SD card, on which you can record video if the camera is working in offline mode.

I think it will be interesting for you to see what could have caused the appearance of that white smoke at the moment of a short circuit? Let's take a closer look at the site of interest to us:

I'm sure many have already seen what kind of repair the CCTV camera needs, but in order not to play guessing games, consider the problem area under a magnifying glass:

As you can see in the photo above, the element was almost completely demolished by the “tower” (upper part). This is, as they say, a difficult case, because the opportunity to see its markings, which, as a rule, is applied to the upper part, is lost. It turns out that we simply do not know the parameters of the element that we are going to change, and without this knowledge, nowhere, otherwise, after switching on, something else can easily burn out!

What can be done in such a case? First of all, once again pay close attention to the printed circuit board itself: there is a small designation on it next to each element (R29, C138, etc.). We can see that next to our “victim” is written Q1. So, it's a transistor! Already good!

Note: in order to briefly familiarize yourself with the basic designations of elements on printed circuit boards, you can download a small file.

Let's say it again: repairing a CCTV camera (and any other electronics) without a clear understanding of WHAT we solder and instead of WHAT is impossible! Therefore, we have several ways to find out what parameters should a candidate for replacement have?

Option one: search the Internet for a similar case (perhaps someone has already repaired something like this)? The second option (ideal): on the same Internet, find a diagram (drawing) of a printed circuit board, on which all elements and their characteristics will be directly shown. The third way (the most exciting and unpredictable in its ending) is to talk with familiar electronics engineers or consultants of radio shops / radio markets.

In my case, in the process of repairing an IP camera, combining the first and third options helped me.The result of enough lively verbal “traffic” in both directions was the following short summary: the 2N7002 transistor should fit! 🙂 While collecting information, one of the component sellers told me a wonderful phrase: “only specialists should deal with such repairs!” I was heartily happy! Somewhere I have already heard something similar 🙂

So, in the end, we just have to look on the Internet and look at the documentation (datasheet) for this element. We find the following information:

From it we learn that this is an n-channel mosfet transistor, package type (SOT23), pinout, operating voltage and temperature range and much more useful. Who cares, the full datasheet looks like this.

Now the easiest thing to repair a CCTV camera: buying a transistor! It cost me one hryvnia (less than three rubles). Upon arrival home (I did the repair of the IP camera at home), I conveniently placed the board on the table, fixing it on the BAKU editing table (clamp) and set to work:

We work with a simple soldering station, tubular solder with flux inside and two accessories that make it easier to examine small parts on the board: the so-called "third hand" and a head-mounted binocular magnifier. I am using model MG81007 with LED backlight. On the head, this case looks like this:

The soldering technology itself is described in detail here, so we will not repeat ourselves. The result of the repair of the CCTV camera was a transistor soldered in place of the failed one. This is how our solder joint looks under a magnifying glass:

We launder the whole thing from the flux and try to turn it on.

Advice: try to make a test run of the repaired product in the smallest possible configuration (so that you do not disassemble it again if it suddenly does not work).

Based on the above, I connected the power supply and network cable directly to the board:

After the device has booted, the green LED lights up, signaling that the Internet camera has entered operating mode. Moreover, it did not change to red, as it was before the repair, but continued to confidently delight with the permissive color of the traffic light.

Now we just have to check the network connection with the repaired product by executing the ping command from the computer to the camera (it was successful) and try to access its web interface:

As you can see, there is an image, which means that we have carried out the repair of the CCTV camera successfully. We can congratulate ourselves on the next victory of a man over a soulless machine! 🙂

It remains only to put the whole thing back into the case and return the device to its workplace. But before that, I decided to do one more thing - to reflash our IP camera (update its software). It hangs high with us, every time it is not convenient to shoot, so, taking this opportunity, you can go overboard.

What do we need for this? First of all, take a close look at the sticker (sticker), which is located on the back of the case. It contains information that you will definitely need if you want to do something like this yourself. Let's take a closer look at the sticker:

See all these P / N, H / W, F / W, etc.? Such designations must be read and understood with confidence if we are going to deal with updating firmware on various electronic devices. I propose to deal with all the designations in order.

Model No - the exact model of the device (I was guided by it when I typed in a search engine: “download the firmware for the D-Link DCS-2102 camera“). P / N (Part Number) - component code in the vendor's (manufacturer's) counting system. Let me explain the thought: normal equipment manufacturers have a part number on each part or device as a whole, and knowing its number, you can easily order a replacement for any unit or part from him. For example, repairers often use these numbers (from special part-catalogs) to order spare parts for various printer models.

In the case of repairing a CCTV camera, this may not be useful, but you need to navigate in such things. Moving on: H / W (Hardware Version) - hardware revision or hardware version of the device. For example, a company produces products (the same IP cameras) and, in the course of production, makes some small changes to them, according to the wishes of users and other requirements. There are changes, but not so big as to change the model number (Model No), so various revisions (improved versions) of the final product appear.

Note: for example, for the central processor of a computer, instead of the term "revision", another word is often used - "stepping". Although they mean the same thing.

You see, in the photo above, the Hardware Version is marked as A3... It is precisely this version of the firmware (for a security camera of revision A3) that we must load (fill) into our device. Not otherwise! For each series of new hardware revisions, its own (somewhat unique) software shell is written and an attempt to “flash” the device with a version that is not suitable for it will lead to its complete inoperability. Remember this for sure! Then you can't do without a programmer.

F / W (Firmware Version) designation is the version of the software used in the device. It is the microprogram (you can conditionally call it bios), which the user can change independently by installing a new, suitable one. In my case, the version had a work number of 1.05 (changed to 1.06 after the update).

Note: try to always download new firmware versions only from the manufacturer's official website!

Not related to the repair of the IP camera, but an important parameter: S / N (Serial Number) - the serial number of the product. A unique code for each product that identifies it. I remember that by this S / N number I once looked on the website of the Corsair RAM manufacturer the characteristics of my RAM modules (I was interested in the maximum operating frequencies when the voltage changed).

The last on the sticker is the MAC ID - the hardware network address (MAC address). Similar addresses are used in network cards of computers.

For today, this is all that I wanted to tell you about the repair of a video surveillance camera. A small result may be a kind of parting word: do not be afraid to experiment! In any case, it is better to do something than do nothing! Good luck and see you in the following articles on the pages of our site.

Hello everyone. Partizan IP CCTV camera under repair today IPO-VF1MPthat stopped working after a thunderstorm.

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.

Fault diagnosis

To begin with, I connected the DC output of the camcorder 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 are working properly. One of the important signs that the firmware with the processor is working properly is a click, somewhere around 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 still did not detect the LAN connection, and the Lan connection indicator on the camera itself did not light up either. 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, then unscrew the three bolts that hold the entire IR illumination with the board.

Camera without protective glass

After unscrewing the bolts, I removed all the 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 camcorder not through 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.

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

Having applied power to the camera again, I determined that the microcircuit is very hot 8710A, it is also the Lan-interface of the camera. 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, I covered them with foil.

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

For this, the microcircuit must be lubricated with flux, and all contacts must be well tinned.

Prepared microcircuit for soldering

Having installed the microcircuit on the board, he began to warm it with an average flow of air until the solder melted and the microcircuit sat down in its place. The temperature of the hair dryer was about 320 degrees.

A new microcircuit is installed on the board.

Also, after soldering the microcircuit with a hairdryer, you need to go over the contacts with a soldering iron in order to exclude possible undershoots.

After cleaning, it's time to plug in all the connectors and check the camera.

After energizing, the current consumption dropped to 90 mA.

Consumption of a camcorder after installing a new microcircuit

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

Local Area Connection Indicator 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 was out of order. Since the connector is not collapsible, there is no way to change it.

After installing the program for Partizan CMS video camera, it was possible to successfully connect to the camera. The picture was normal, the ping of the camera was smooth.

Video 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.

Image in night mode.

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

Recently, the installation of video surveillance systems at various objects of the national economy has become very popular. This control system has found its application in everyday life. Very often the video control line is installed in apartments and private houses. The defense system is quite complex in its complex composition. It includes various optoelectronic and technical devices, including video cameras, video recorders, power supply, connecting wires and other auxiliary equipment. Like any technological complex, a video surveillance system can malfunction. Often, the reason for the inoperability of the line is the breakdown of the camera. Repair of CCTV cameras can be done by hand or with the help of specialists.

In order to independently repair CCTV cameras, it is necessary to determine which classification type the device belongs to. Camcorders differ in a number of ways:

Type of color rendering (color and black and white);
Surveillance method (covert or open video surveillance);
Observation corner (swivel and non-swivel);
Appearance (standard and domed);
Method of information transmission (wired, wireless, IP cameras).

The video shows the repair of a CCTV camera:

The reasons for the failure of video surveillance systems can be varied:

Untimely maintenance of equipment or its absence;

Making mistakes when designing a control line;

Poor quality installation work;

Violation of the rules for installing surveillance cameras and other components of the system;

The operation of the surveillance camera for a long time to failure (development of the envisaged working resource);

The impact of external factors, including weather conditions;

Manufacturing defects.

In order to determine why the CCTV cameras caused the failure of the whole complex, it is necessary to diagnose them. To do this, you need to check the power supply and its value. To test the functionality of the video equipment, you can connect the device to another test system. If the system is equipped with an analog video camera, then it must be connected to a mobile tester. In this case, the video feed will be checked.If the complex is equipped with IP video surveillance cameras, then testing will be carried out using a personal computer. In this case, specialized software must be installed on the computer, and the camera must be displayed on the local network.If, after performing such actions, the camera has not recovered, then you need to contact the service center for help.The specialists of the service centers will be able to carry out better repairs of cameras, since in case of failure of any element of video equipment, it is necessary to open the case of the device. In practice, there are cases when the warranty period has expired. Then you can repair the camera yourself. This requires a minimum of technical knowledge.For example, if the lens on a CCTV camera is fogged up, you should carefully open the case. Further, all internal mechanisms must be thoroughly dried. After that, the device is assembled, while the connecting places are treated with a hermetic lubricant. The sealant will prevent moisture from entering the mechanism.Camera malfunctions can be varied. Experts identify the main types of breakdowns:

Interruption in the power supply to the camera;

Failure of one of the radioelements;

Failure of the IP-server of video control cameras;

Failure of device focus settings;

Fogging of the lens glass from the inside;

Inoperability of the microphone;

Violation of shooting modes.

The failure of the IP-server of cameras today is a very difficult breakdown. The repair of such equipment is quite expensive. The cost of repairs is the same as the cost of purchasing new equipment. In addition to the above malfunctions, video equipment may have the following reasons for failure:

Damage to the power board in the surveillance camera;

Soldering of individual parts of the board;

Break in the cable connection providing power to the device;

Violation or open circuit in the video output circuit (in this case, the image and the settings menu are absent);

Impact of a lightning discharge;

Overheating of microcircuits of video control cameras;

Unreasonable reboot and shutdown of equipment.

The process of identifying the causes of malfunctions in an IP video surveillance camera is significantly different from an analog mechanism. First of all, this is due to the complexity of the assembly of electronic boards. Diagnosing breakdowns requires some effort. The failure of the device can cause the following reasons:

Pulse noise in a camera or network;

Voltage drops.

To eliminate the cause of the voltage drop, it is recommended to install special stabilizers.There are often cases when the video camera does not transmit any image and does not respond to the sent requests. This could be due to burned out electronic control boards or damaged connecting cables.You can fix such a malfunction with your own hands. To do this, it is necessary to replace the broken part.It happens that the camera is loaded, the corresponding control menu is displayed on the monitor, but there is no video image. In this case, the cause of the breakdown is obvious - this is the burnout of the matrix. This part, as a rule, is presented in the form of a candy bar equipped with a sensor board. Replacing it yourself will not be a problem.Another common problem is the lack of display and control menus. At the same time, the equipment is operational and accepts requests. The problem is caused by an interruption in the video output circuit. To restore the operation of the mechanism, it is necessary to replace the corresponding board.If the video device automatically reboots or shuts down periodically, a hardware failure is possible. In this case, the microcircuits may overheat. To troubleshoot the problem, you must eliminate the cause of the overheating. A common problem in the operation of the system is the inconsistency of the firmware of the mechanism with the installed software. The camera needs to be reinstalled in a different location or the software must be updated. It is better to update the factory firmware of the device to a more modern version with the help of specialists.When installing PTZ cameras, remember that their malfunction is caused by a number of technical reasons:

Rotary gear wear;

Contamination of the control sensor;

The call appearance program has failed.

Software problems can be resolved by updating the firmware version, and mechanical problems by replacing individual parts.Systematic maintenance of the video surveillance system is necessary for the smooth operation of the entire complex. Qualified maintenance is the responsibility of specialized firms.For this, an agreement is concluded between the parties. It must indicate the frequency of maintenance work.To understand what maintenance is, you need to know which devices need constant monitoring. The video recorder is a component of the video monitoring line. It should be checked annually and free of dust. The device must be located in a ventilated area. Its periodic check will ensure the smooth operation of the entire complex, since it is possible to identify and eliminate the causes of possible malfunctions in a timely manner.Maintenance of video equipment is essential. The device can become clogged with dust. Most often, dustiness occurs when installing devices in a room (apartment, office). A layer of dust is deposited on the lens cap or lens. As a result of dusty conditions, the video image will be fuzzy and dark. If external mechanisms are used for video monitoring, then periodically it is necessary to check the condition of the case, gaskets and seal. Over time, these protectors can wear out or crack.To prevent malfunctions in the control line power supply, it is also necessary to carry out systematic maintenance. When performing maintenance actions, it will be possible to identify voltage drops in a timely manner. If we are talking about uninterruptible power supplies, then the batteries are subject to verification.

Lack of power supply;

Breakdown of radioelements;

Defocusing the camera;

Moisture condensation inside the lens;

Broken microphone;

The shooting mode failed.

Less often, the failure of CCTV cameras is due to:

Damage or unsoldering of the camera power board contacts;

Damage to the power supply cable of the camera;

Damage to the video output cable;

Overheating of video camera microcircuits;

As a rule, breakdowns occur most often due to voltage surges in the power grid, which are eliminated by purchasing a voltage stabilizer, as well as due to impulsive noise.Possible causes of failures in the operation of CCTV cameras and remediesMalfunction: The signal from one of the cameras stopped comingSolution: First of all, you need to check all BNC register connectors. If after that, the camera still does not work, you need to check the voltage in the network using a conventional tester. If this does not help, a possible reason is a break in the power cable, which can also be called with a tester. If there are no problems with this, the cause of the breakdown lies in the camcorder itself. Check for signs of physical damage to the camera or broken contacts.Malfunction: Flickering or streaking appears on the Tracking Monitor.Solution: Often, the problem can be resolved by checking the cable connections and the integrity of the insulation on them. If the insulation is damaged, the breakage can be repaired with ordinary electrical tape.Malfunction: The camera with infrared illumination does not work at night.Solution: Check the connections between the camera and the IR sensor. If this is not the cause of the breakdown, replace the infrared sensor lamp.Malfunction: The camcorder does not transmit an image and does not respond to requests.Solution: The reason is most likely hidden in a malfunction or burnout of the electronic control board, or in the breakage or damage of the connecting cables. It is necessary to replace the broken board or repair the damaged cable.Malfunction: The camera is loading, the control menu is displayed on the monitor, but there is no picture from the cameras.Solution: The cause of the breakdown is the burnout of the matrix. You can replace it yourself with a working one, it will not be difficult.Malfunction: There is no picture and the control menu itself, although the equipment accepts requests.Solution: The reason for this is an interruption in the work of the video output circuit. We also replace the corresponding board.Solution: The software needs to be updated to the latest version. As a rule, it is better to call specialists for this. Image - DIY ip cameras repair

Equipment diagnostics.

Let's say you have a video surveillance system, and one camera out of four stops showing.

Firstly, it is necessary to check whether the power is being supplied. Because most often it is not the video camera itself that fails, but its power supply.

Almost all modern devices have IR illumination located around the lens. We cover the light sensor or the front panel of the camera with our hand so as to exclude the ingress of light. Built-in IR illumination, should light up in red, you can see it through your fingers. Also, the voltage can be checked with a multimeter (tester) at the output of the power supply, most video cameras consume 12 volts.

Secondly, check the channel on the recorder (for AHD / TVI / Analog). We connect the faulty camera to another channel of the recorder, there are cases of burnout of one of the channels - the DVR will need to be repaired.

Dismantling and repair of a video surveillance camera.

If you did not reveal any problems - go to disassembly. It is good if there is a second same camera (working copy). We disassemble the faulty one first. Carefully open the case and unscrew the bolts securing the module / lens / IR illumination. We make a visual inspection of the equipment. We check the module for swollen capacitors, if we see problematic ones, perhaps their soldering to similar ones will help. Immediately after turning on the video camera, the chip on the module should start to warm up. On cheap or weak modules, radiators are usually not installed. If the chip is heating up, it means that power is coming to it.

Camera still showing no signs of life? We take the second (working) and put it on its tail - the problem one. There are broken wires in the tail of the camera. By rearranging the elements, we can establish what is out of order on our camera. If the module burns out, we replace it entirely, if the infrared IR-Cut filter, lens or IR LED illumination, they can also be replaced. DIY repair will consist in finding and replacing the faulty item. Nowadays, finding them in retail is not easy.The task will be greatly facilitated if there is a “donor”.

If digital ip camera stopped loading - try to "reset" it. On some models there is a reset button, which can be pressed with a pin / pin, or when the camera is turned on, two unused contacts on the power block are closed. Also came across models on which reset is displayed on the tail. If there are no reset buttons, you can try to reset it programmatically, using the settings via the web interface or the ResetTool utility. Happy renovation!

I will dilute posts about replacing glasses and displays with a post about hardcore repair of an outdoor video camera that failed after a thunderstorm.

Here's a camera. I connect 12 V - the effect is zero, as is the current consumption.

Visual control under a microscope, without it in any way. Immediately I see a diode with a beautiful hole, I check it with a tester - the resistance is equal to infinity, so the diode is broken.

It was broken for a reason, but due to the flow of a large current through it. This is the reason.

Short-circuited six-legged DC-DC step down. I fix the board in a mega-convenient holder.

I blow off the diode and shimka, check the resistance of the power circuit - a few kilo-ohms, then everything is fine, there is no more short circuit. I take out an analogue from the bins.

I solder it in place and the diode.

I connect it to the power supply unit, set the current limitation to 100 ma, so as not to burn anything else.

72 ma is her native current consumption, so far everything is according to plan. I poke the oscilloscope on the throttle leg of the shimki.

Beauty, shimka works. I connect the camera to the monitor, everything is OK.

It seems to be all, but no. Infrared light does not work.

Could be replaced, but I have the same backlight from disassembly. I'll put it on.

The camera is working, will be installed by the installers back on the object. Everything.

A bit not a modest question, but still: How much does this work cost? It's just that this matrix costs about 400-600 rubles, and the backlight is even cheaper. Is it worth the candle?

In this case, the repair is equal to the cost of the diode and the shim. The diode was soldered free of charge from some kind of laptop board, and the shimka costs 20 rubles for Ali. This camera was at our client's facility, among others (several dozen), so it had to be restored. In more severe cases, of course, I change the module.

PS Do not count it as an advertisement, but if there is no work now, we can take it to ourselves)) It will be interesting - write)

Thanks for the offer, but there is work to do. I'm not only fixing modules from cameras))

Sometimes I also suffer so much, but you are so far away. (north of tomsk region)

I also change modules, nerves are cheaper.

The polarity reversal is unambiguous, the client is to blame.

Vertically in a vice, and from above neatly along the seam, along the knife, with a hammer.

a knife is better not. with a hacksaw for metal, carefully saw it along the seam and open it, and then glue it with dichloroethane. but you can just rewind with blue duct tape.

you can still black - in color, but blue is safer

The question is - you get the scheme of this camera was originally and did you know what was there? it's just that sometimes the inscription burns out and you can't make out what kind of part it was.

The question immediately arises regarding the replacement of shimok. They burn a lot in what. Is there a chipset (list) that will fit most of the time?

Announce the entire list, please!

Respect! instrument is nothing. I change modules.

Do you solder smd with a soldering iron or a hairdryer?

I solder with a hairdryer, solder with a soldering iron

Here the prospect of STM soldering is outlined, how to solder it so that the legs do not stick together? Is there solder paste on Ali (but I understand it only for a hair dryer), is it possible to apply it, and at the same time solder all the legs with a soldering iron?

use the flux, it increases the surface tension of the solder and the legs do not stick together, the main thing is to get the hang of it, well, the soldering iron is not like in the picture

Such a question: Hikvision outdoor IP camera, moisture ingress into the connector (IP68.) With rotting of the contact, the connector is restored (called back, pressed it, put the pass-through). It is possible that the storm is also to blame. Result: does not start from 12v power supply, with PoE turns on infrared illumination, but does not go into working mode.The problem is on the power board, the rest is working, replacing the power board from the donor was successful, now I am trying to resurrect the donor with broken glass for internal use. There are no visible breakdowns. Where to dig?

There is also a street camera, no one undertakes to fix it. Maybe there is a desire to try?

OssYl cool, did you take on ebay?

@LabOfRepair, can you advise something)
Broken tablet Huaiwei Mediapad 7, not light, but simple. It turns on, comes to the Huaiwei screensaver and then the screen is cut off. The service could not help, they said that it was working, but for some reason the screen was cut down and they could not install the firmware.
I tried to roll back to the factory version, the same garbage, the screen is cut down and that's it.

If it is sewing normally, then it is very similar to a problem with the power supply - the tablet boots up, comes to start, the current consumption rises sharply, there is a failure in one of the supply voltages and everything is cut down. You need to try instead of a battery to connect a laboratory power supply unit and start a tablet with it.

Video (click to play).

Where are you located? And then my tablet stopped charging when it was on (although the indicator shows charging), I'm looking for normal repairmen. Tablet GT-P6200.

Rate the article:

Grade 3.2 who voted: 85