Repair of DVRs with their own hands: a diagram, instructions, recommendations and feedback

Modern DVRs are equipped with high-quality protection systems. However, they are sometimes not enough to avoid various failures. The device models are pretty similar. The standard scheme of the DVR includes a processor, a connector, and also a printed circuit board.

The camera is attached to it through a special cable. The signal is transmitted through the photoresistor. Also, DVRs have different types of capacitors. Some models use a module together with a memory block.

Overheating of the DVR by the example of Gmini HD90

When overheating in the sun, repair the DVR Gmini HD90 with your own hands, you should start by examining the printed circuit board. The problem is most often in photoresistors. At high temperatures, fuses can not protect them. In order to inspect the DVR, it is necessary to remove the cover of the model. Next, you need to carefully remove the camera and unscrew the printed circuit board. If her contacts darkened, then you will have to completely change. The marking of the part is indicated on the reverse side.

Problems with sound in DVRs: instructions for troubleshooting and feedback from specialists

Problems with sound are found quite often. Repair of the car DVR with their own hands in this situation should begin with the inspection module. Sometimes the problem lies in the dynamics, but this happens rarely. To view the camera module, remove the cover of the DVR.

Next, you need to disconnect the camera's protective loop. After that it will be possible to unscrew the PCB. The modulator in this case should be located near the connector. You also need to check the contacts. If you believe the opinions of experts, you can try to make measurements of resistance in the chain. However, you will need a tester for this. On average, the resistance of the module should not exceed 55 ohms.

Problems with the operating system for the example of Viaccess 605: consumer reviews

If you believe consumer reviews, they often face problems due to the operating system. As a rule, this happens when the modulator goes out of order. In this case, you can make repairs yourself. Video recorder Viaccess 605 for this you need to inspect. For this purpose, the lid is disconnected and the external contacts of the printed circuit board are checked.

Next, you should inspect the modulator directly. To do this, carefully disconnect the camera and the cable. The next step is to remove the modulator with a screwdriver. As a rule, the problem lies in burned-out contacts. In this situation, the part will have to be completely changed. This model has a wired-type modulator.

Repair of the connector at the DVR

The connector at the DVR is responsible for transmitting the signal from the modulator. It breaks most often from mechanical impact. Repair of DVRs with their own hands in this case is quite easy. First, the lid is unscrewed from the model. Further, to make the repair of DVRs with their own hands (no matter what manufacturer), it will be necessary to inspect the PCB and the modulator.

If they are all right, you can remove the connector. Sometimes his contacts can overheat. In this case, it is almost impossible to repair the DVR. If the contacts are not very damaged, you need to use forceps and detach the part. The next step is to inspect the distributor on it. The resistance should not be more than 50 ohms. If the tester shows a deviation from the norm, then you have to solder a new connector.

Connector Inspection

The power cable of the DVRs is connected via the connector. Sometimes the connection is broken and the device stops working. Repair the DVR with your own hands in this case, you should start by checking the connectors. To do this, you have to spin the model. The printed circuit board should not be touched by it. The connector is located in the housing near the connector. In order to inspect it, you will have to shift the protective plate to the side. After that, the base of the connector must be pushed. This can be done with a screwdriver. If mechanical damage is visible on the part, it means that it will have to be replaced. To buy connectors in the store will not be difficult. However, you need to know the exact modification.

Replacement of the PCB at the DVR

On the PCB of the DVR there are many elements for controlling the system. When they fail, the appliance does not work. Repair of DVRs with their own hands in this case can be done by removing the cover. To remove the PCB, you need a screwdriver. At this stage, it is important not to damage the amplifier, which is located away from it. After disconnecting the PCB, you should check all the sockets and clean them.

Problems with the cable in the video recorder "Karkam Q3"

If you believe the reviews of consumers, then this DVR problems with the loop occur quite often. This component is very whimsical and sensitive to negative temperature. When it breaks, the connection to the camera immediately disappears, but the device memory via the personal computer remains accessible. Repair the DVR "Karkam" with your own hands with a broken loop, you should start by removing the cover. To get to this part, you'll have to remove the circuit board.

After that it will be necessary to detach the camera directly. The cable of this DVR is attached via a special connector. In order to release him, you have to use a knife. In this case, it is important not to damage the wire that comes from the battery. The next step is to carefully remove the loop. If it shows signs of damage, then it needs to be replaced. After installing the new component, you just need to rebuild the connector and fix the part firmly.

Replacement of the photoresistor with the example of DVR "Shturman"

If you believe the reviews of consumers, then from overheating in the sun photoresistor models often goes out of order (below is the diagram of the DVR "Navigator"). Repairs with their own hands in this case can be done. First you have to remove the cover and unscrew the PCB. The photoresistor of the model is located near the condenser. To get to it, do not unplug the camera.

Simply remove the cable and disconnect the converter. After that, it will be possible to inspect the photoresistor. It looks like a compact speaker. The specified element is attached through a wire that leads to the connector. If the problem is in it, then you'll have to use a blowtorch. When the photoresistor burns out, you need to buy a new part. Install it with a soldering iron is not difficult.

Repair module on the example of video recorders "Karkam Q2"

The module in the DVR is required to control the camera. If it breaks, the signal does not enter the memory block. In this situation, you can make repairs yourself. The video recorder "Qarkam Q2" for this purpose should be de-energized. The module is located next to the printed circuit board. However, in order to reach it, the converter must first be disconnected.

Next, you have to remove the camera with a cable. Only after that it will be possible to see the module that is next to the distributor. There are two contacts at the bottom of the component. In some cases, they burn out due to short circuits. To solve this problem, the module should be disconnected and soldered again. It is difficult to deal with such a problem on your own. In this case, it is better to contact the service center. However, the cause of breakage can also be accumulated dust. In order to solve this problem, you just need to clean the contacts with a cotton swab and reassemble the DVR.

Summarizing

Considering all of the above, you should not disregard the rules of using the DVR. If necessary, a survey of the model can always be carried out independently. However, before repairing the device, you should evaluate the extent of the damage and take a weighted decision. Sometimes it's better to immediately bring the DVR to the service center and consult with a specialist.