The failure of the DVR is lifted, and the network DVR alarms what s going on

1. No hard disk: The recorder does not detect the hard disk, it may be that the hard disk is not installed or the hard disk cable is not connected, or the power supply of the non-standard power adapter is insufficient, resulting in the hard disk not starting. In the case of confirming that the hard disk has been installed, we can try to plug and unplug the hard disk cable, replace it with the standard power supply, etc.

2. Hard disk error: There is a problem with the hard disk, such as the hard disk is lost, unable to read and write, etc. These situations are usually caused by internal problems of the hard disk, and it is recommended to use the "Bad Sector Detection" function of the recorder for full detection.

3. Insufficient hard disk space: The hard disk is full of writes, and cyclic writing is turned off. Enable disk cyclic writing or replace the disk with a new one.

5. **Signal loss: A channel cannot be displayed**, which may be due to disconnection, IP change, etc. If you can't find it, you need to cover the lens to check whether the camera is powered on and running, and ping to check whether the network is unobstructed.

Common causes and solutions of DVR faults.

a.Symptom description: The DVR cannot be started.

Cause analysis: the power switch of the host fails; The power supply of the host is damaged; The host motherboard or CPU card is broken; The boot area of the main system hard disk is damaged, or the hard disk itself is faulty; The operating system is corrupted, etc.

Solution: Carefully analyze the above reasons and eliminate them one by one.

b.Description of the fault phenomenon: the digital hard disk video recorder crashes (the image monitored on the scene is frozen or the time information superimposed on the image does not go).

Cause analysis: software problems, including the failure of the operating system or monitoring software in the PC-type hard disk host base, and the monitoring software problem for the embedded hard disk video host, a file of the system software is destroyed; Hard disk storage in the host.

bad sectors on the disk; The power supply in the host is insufficient; There are too many hard disks in the host and heat is generated.

Excessive fever will cause a crash.

Solution: Reinstall the system or monitoring software for the PC hard disk host; Embedded hosts require software upgrades; Repair or replace the hard drive; Replace high-power power supplies; Replace the ** card or replace the main unit.

c.Symptom description: Automatic shutdown.

Reason analysis: Today's mainstream motherboards have a temperature monitoring function for the CPU, once the CPU temperature.

If it is too high and exceeds the temperature set in the motherboard's BIOS, the motherboard will automatically cut off the power supply to protect the hardware. On the other hand, power management and virus software in the system can also cause automatic shutdown.

Solution: If the above sudden shutdown occurs frequently, check whether the heat dissipation of the CPU is normal. Turn on the case to see if the fan blades are working properly, and then enter the BIOS option to see the speed of the fan and the working temperature of the CPU.

If the problem is with the fan, carry out relevant dust removal maintenance on the fan or replace it with a better quality fan. If the power supply is aging or damaged, it can be confirmed by replacing the power supply, and replacing it with a new one if the power supply is broken, in case the hardware is burned. Of course, it may also be poisoned, enter the system, overwrite the installation of power management from the installation CD, and then thoroughly check and kill the virus.

Also, keep your antivirus software up to date.

d.Fault description: The DVR frequently crashes and restarts after upgrading the hardware, such as adding hard disks, adding recorders, replacing high-performance graphics cards, etc.

Reason analysis: When upgrading the DVR, such as installing a high-speed optical drive, due to the high speed, the power consumption is also large, and the load of the power supply is increased, and the phenomenon of crashing or restarting will occur. The original power supply does not take into account the power consumption of current hard disks, graphics cards, and high-speed optical drives, so the output power of the power supply is generated.

It's not too high, plus some miscellaneous power supplies themselves"Shrinkage"When the number of devices in the system increases, the power consumption becomes larger, and the voltage output of the inferior power supply will decrease sharply, which will eventually lead to the unstable operation of the system and the phenomenon of automatic restart.

Solution: Replace with a high-quality power supply with high power.

Summary. DVR password recovery steps.

1. Turn off the host of the DVR and unplug the bolt or power plug.

2. Remove the cover of the DVR.

3. We can see the single-chip microcomputer in the machine, that is, the circuit board, and find the J4 pin next to it, in other words, it is a jumper, which is marked with the character of password clear.

4. Use the jumper block to short-circuit the 1 and 2 legs corresponding to the J4 pin.

5. At this time, we need to connect the bolt or power connector of the host and turn on the machine to view.

6. When we hear the prompt sound on the front panel, it means that the DVR password has been restored to factory settings.

Miscellaneous DVR reset.

DVR password recovery step 1, turn off the host of the DVR and unplug the bolt or power plug. 2. Remove the cover of the DVR. 3. We can see the single-chip microcomputer in the machine, that is, the circuit board, and find the J4 pin next to it, in other words, it is a jumper, which is marked with the character of password clear.

4. Use the jumper block to short-circuit the 1 and 2 legs corresponding to the J4 pin. 5. At this time, we need to connect the bolt of the host or the power connector of the machine and turn it on. 6. When we hear the prompt sound on the front panel, it means that the DVR password has been restored to factory settings.

The point is, what does j4 look like?

If it is "stainless steel J4", then it is commonly known as "201" on the market.

Dear, please elaborate on your inquiry, thank you.

Summary. If you forget your password, you can use the following methods: Different brands of DVR NVR password reset methods are different.

1. There is a small key-like icon in the lower right corner of the video recorder menu, a dialog box will pop up, enter wsadws in the password box, and click OK to restore the default password.

2. Enter the login interface.

Username: admin: password: ttvtthuanyuan Login, the login window will continue to appear, and you can log in with the factory default username and password (default username: admin, password: 123456).

Miscellaneous DVR reset.

Hello, we have received your question and are working hard to prepare the answer for you, and will reply to you within five minutes! Wait a moment! ^

Which is J4?

Which is J4?

Hello, very closed with a happy answer for you, miscellaneous hard disk guess video recorder reset, you can use the motherboard CMOS battery discharge to reset the car Zhaolu, method: take out the motherboard CMOS battery and stay for 10 seconds and then install it.

How do I get my password if I forget it?

If you forget your password, you can use the following methods: Different brands of DVR NVR password reset methods are different. 1. There is a small key-like icon in the lower right corner of the video recorder menu, a dialog box pops up, enter and guess wsadws in the password box, click OK to restore the default password.

2. Enter the login interface username: admin: password:

ttvtthuanyuan login,The login window will continue to appear,You can log in with the factory default username and password (default user name:admin,Mi Que manuscript code is chaoxiao:123456)

1. Fault phenomenon:

1. When there is an abnormality, the DVR will not alarm.

2. Once the alarm sounds, it can't be stopped.

3. The alarm information is incorrect, and the DVR makes irregular alarm sounds.

2. Solution:

1. The alarm keeps ringing. The alarm can't be stopped, unless the alarm is turned off, it is always in the alarm state.

This is due to the fact that too many alarm conditions are set when the software alarm conditions are set. You can open the operating software of the DVR, open the advanced options inside, click on the exception handling inside, and remove the checkmark in front of some unnecessary alarm items, and the alarm will be over.

2. The alarm information is incorrect. In other words, the alarm is not called when it should be called, and the alarm keeps ringing when it should not be alarmed.

This is most likely due to incorrect alarm input signals or incorrect wiring of alarm equipment. Wiring errors occur when the alarm is connected to two line circuits. If the wiring is wrong, the alarm function of the alarm will be disordered, and the problem of incorrect input signal can be solved by resetting it from the software.

If it's a circuit issue, the circuit needs to be taken apart and reconnected. For the specific wiring method, please refer to the connection method introduced above.

Let's see if the hard drive is full.。。 Then go to the settings and see how the recording mode is set up. There's nothing else wrong with that.

If it really doesn't work, you can find the manufacturer. Look at what they say.

Motion detection alarm is enabled; 2.Failure to record will result in an alarm; 3.Loss of screen will lead to an alarm; 4.

Abnormal working of the video recorder will cause an alarm. It is recommended to communicate with the customer service of the video recorder manufacturer to confirm the specific problem, I hope it can help you!

Question: The hard disk cannot be initialized, what is the reason? Kiss.

Smile] [smile].

Answer: In general, there are several types of situations that may cause the hard disk to fail to initialize. (1) The setting in CMOS is incorrect; (2) The hard disk is infected with viruses; (3) The hard disk is logically locked. For the first case, it is easier to do, generally speaking, as long as the CMOS is set to the default value, the user can view the BIOS in the CMOS settings

Question: Do you want to change the hard drive?

It can be linked, that is, the two wires of the alarm output of the Bosch 7400Xi alarm host, first connected to the relay, and the switching signal from the relay is connected to the Hikvision DVR, and the alarm PTZ linkage is set on the Hikvision DVR, so that the high-speed dome corresponding to the alarm in a certain defense area in the perimeter can be automatically transferred to the corresponding position for monitoring

One question, the machine is broken, thank you.

1. Reason:

1. Compatibility problems, monitoring has high requirements for hard disks, and it is recommended that customers use professional-grade monitoring hard disks. If you use a computer hard disk, it may be abnormal when it is enabled or after a period of use.

2. The video hard disk is always read and written repeatedly, and there is a reading error, so tidy it up or reformat it. It's best to tidy it up or format it regularly.

3. If you have a problem with the setting, the hard disk will prompt you after you access the disk, open the monitoring system software and reconfigure the relevant parameters of the hard disk video storage.

4. The hard disk itself has a problem, there are logical or physical bad sectors, reformat or replace.

2. Solution:

1. If the hard disk interface cable is faulty, try to change the cable.

2. If the hard disk itself is faulty, check whether the status of the hard disk is normal, if the error is reported, you can format the hard disk to try, or hang it on the PC and use relevant software to detect whether the hard disk itself has bad sectors or performance degradation.

3. Confirm the size of the hard disk, the model and version of the product, find the parameter table of the device, such as the old device supports 2T or 4T, check the hard disk support list, some requirements are supported by the main control version to a certain version or more, only supported.

Please take a look at it first. Whether the equipment has been dropped and the inside has not been dismantled. Either your hard drive is full, and if so, just delete some of it.