How to detect camera damage

Question 1: How to judge that the camera is broken and the display speed is slow

Phenomenon: When I was surfing the Internet, I used the camera, but found that the display speed of the camera was too slow.

Method: Change Internet access to another place or change ISP.

Steps: If you are currently surfing the Internet at home and such a problem occurs, you may wish to take the camera to another place (such as an office) to surf the Internet. Of course, I hope the two are not the same telephone exchange. It is of no use if your home and work are in the same telephone exchange.

If you are using an Oriental Netscape account, you may wish to use the instructions of 263: Slow camera display speed is very typical. The reasons are mostly network congestion caused by insufficient network bandwidth, or poor phone line quality. .

Video preview image

Phenomenon: The video preview image of my camera is too bright or too dark. Is it a quality problem?

Method: Adjust brightness and contrast background.

Steps: See specific application software.

Note: You should also start from the usage environment and intake objects, such as removing bright light sources or increasing the brightness of objects.

Screen blur occurs when using the camera

Phenomenon: The screen blurs when I use the camera. What may be the cause? How to solve it?

Method: Check driver installation and possible conflicting devices.

Steps: Check whether the camera driver matches the camera model. In addition, you can change the display card to test, because the camera may be incompatible with the display card or display driver.

Note: Take the blurry screen that appears on the mesh "EC300 PC CAMERA WDM CAPTURE" as an example. It is likely to be incompatible with the 6326 4MB AGP graphics card. Perhaps the driver is installed incorrectly (it is recommended that you reinstall the driver ). If you use the popular SiS 6326 chip display card, this problem is likely to occur. If the problem cannot be solved by upgrading the driver of the display card, you can only replace the display card.

Other video input devices are useless

Phenomenon: After I installed the camera, I installed the camera again. From then on, I don’t know which device I am using, and I have to look in front of the camera or camera every time. , to know which device is "in service". How to set the default device.

Method: Select a device to exclude other devices.

Steps: Make a video camera. The specific effective methods to enter the driver are as follows:

Open the Control Panel, double-click the "Multimedia" icon

Select "Video", "Device". ).

Open the "Video Capture devices" list and double-click the PC-Camera name. This will open a dialog box showing the camera's properties.

Enable the driver as required. Because after you select one device, it is impossible to invalidate other devices.

Note: When using multiple video cameras. When the device is entered, the computer will use the default device. But it is not as easy to set the default printing device as the printer device in Win 9x. There is no easier way to determine the default device, so the best way is to use a default device. Select one of the series of steps.

White screen or black screen

Phenomenon: During use, a white screen or black screen appears after the image box pops up.

Method: Check the software settings.

Steps: Please refer to the precautions in the manual to change the settings.

Note: This problem may be a headache and may take several attempts. At this time, you will long for a good manual with troubleshooting (Troubleshooting). Take the mesh camera product as an example. The reason is that "Preview" under the "Option menu" does not open. Please double-click and wait for five to ten seconds. .

The camera does not work properly on the laptop

Phenomenon: The camera that used to work normally on the brand desktop computer does not work properly after being connected to the laptop. Is there any device conflict on the computer? There is no yellow symbol in "Device Manager".

Solution: Try reducing the speed of your graphics card.

Steps: Right-click on the desktop, select "Properties", "Settings", "Performance", and gradually reduce the hardware acceleration from the 4th gear to the last gear to see if the problem can be solved. If you can, gradually increase the levels until you find a balance that solves the problem.

Note: The camera and the graphics card are most likely to conflict. When a problem occurs... >>

Question 2: Dear, how do you detect whether the camera hardware is broken? 5 points Next, check with Driver Master to find the device department. If there is a device, update the driver. Or try it on another computer.

Question 3: How to judge the quality of surveillance cameras? If you buy licensed products, the higher the price, the better. If you buy parallel imports, it won’t matter. Higher prices are not necessarily better. The definition is based on the number of lines, 420 lines are the boldest, 450 lines are medium, and 480 lines are the worst. If you don't understand anything, please HI me.

Question 4: The built-in camera of the computer is broken. How to check? First check whether the driver is installed, or whether it is installed correctly... If it is installed correctly, check the corresponding Are the settings correct? If the first two items pass, it is possible that the camera is broken... Try to install the system from scratch. If it still doesn't work, you have to repair it. Jingjing, what brand is your computer?

Question 5: How to check if the laptop's camera is broken? Check in Computer/My Computer - Right-click Management - Device Manager to see if there are any special symbols, yellow exclamation marks or question marks in front of the camera driver. If , that is, there is a problem with the camera driver. You can use Driver Life to update the driver so that the camera can operate normally. If the camera still cannot be used without the special symbols, there may be something wrong with the camera.

Question 6: How to check whether the camera is damaged~[[Experts are close]] In line with the principle of soft first and then hard, and to ensure that your USB device can be used on other computers, it is recommended that the poster follow the following steps Solution:

1. Reinstall the USB for win2K driver. You can check whether the driver CD that comes with the motherboard or USB device comes with a USB driver (usually available), or you can download the driver online. When downloading the driver, please make sure to select the correct motherboard chipset type and operating system type

2. If it still cannot be used after reinstalling the driver, please check the motherboard CMOS settings. Generally speaking, the CMOS default setting is USB is enabled, the easiest way is to restore the CMOS default settings. After entering the CMOS, select Load Setup Defaults and then select Y (different motherboards may have different names, as long as you execute the option to restore the default values)

3. If it still cannot be used, the hardware may be damaged or the connection is poor. Please try a different USB interface. If none of them work, you may need to send the motherboard for repair

There is another Please note that current chassis usually have a front USB interface (that is, the USB interface is on the front panel of the chassis), but this interface cannot be used casually. You need to connect the cable of this interface to the corresponding jumper on the motherboard. Therefore, when the front USB cannot be used, you should first try to plug the USB device into the USB interface on the rear panel of the chassis, because it is directly plugged into the USB port of the motherboard

If there is a driver CD, First try to install the driver and then try again. If the problem persists, it is likely that the USB power supply is insufficient or there is a compatibility issue. You can try the following

1. Directly connect the USB interface on the back of the host to the motherboard directly. Compatibility issues caused by configuration interface or USB extension cable

2. If it still doesn’t work, try connecting on other computers to make sure your device is good

3. Confirm that the device is intact After that, you can try to refresh the motherboard BIOS to the latest version and try again

4. If it still doesn’t work, consider replacing the motherboard

USB interface failure

The player is the It is a highly integrated product, so in actual use, its failure is not as easy to damage as traditional players. And under normal circumstances, the hardware problems that occur are not too complicated. Below, we will introduce some fault phenomena.

USB problem:

Firstly, due to the reverse connection of the USB cable on the front of the chassis, the USB interface of the player is burned out and the USB cannot be used to transfer music, but other functions are normal.

Fault analysis: If the USB cable is connected reversely, it is equivalent to the power part of the USB interface being connected in reverse. Generally speaking, connecting the power in reverse will cause serious problems. Some machines have The design does not use bus power supply, so it will not cause large areas of failure points. At the same time, the USB interface of general USB devices is protected by a protection circuit when designed. Therefore, before disassembling the machine, we analyzed that there should be a problem with the protection circuit part.

After opening the case, you will usually find that there is a severely burned capacitor at the USB connector. The withstand voltage of this capacitor is 6V (forward). After measuring with a multimeter, it is found that the capacitor has been short-circuited. . After soldering the capacitor and connecting it to the USB interface, I found that the computer could find the hardware and everything was normal.

Because this capacitor is used for filtering in the USB interface, this circuit design is generally designed to enhance the anti-interference ability under harsh conditions, which is necessary for electromagnetic detection. But not installing it will not have other adverse effects on the machine, so you can remove it when you repair it yourself. Of course, if you are specializing in maintenance, it is better to add it. If the requirements in this regard are not very high, the capacitor can be removed and the surrounding circuit boards can be completely cleaned with absolute alcohol before the machine repair is completed.

Of course, problems with the USB interface sometimes do not necessarily mean that the capacitor is burned out, because most machines also have two current-limiting inductors (some are resistors) at the USB power inlet. Although the inductor itself can play a certain filtering role, because the inductor wire diameter is very small, it will be burned out when the current is relatively large, which can protect the machine to a certain extent. If there is no response after the USB is connected to the computer, you can check whether there is a problem with it. Generally, machines will be designed near the USB interface. During maintenance, you can use a multimeter to measure their resistance value. It will generally be below 10Ω. If it is too large or... >>

Question 7: How to test whether the computer camera is good or not? Can it be turned on normally? , clarity and clarity are good, the most important thing is clarity

Question 8: The camera is not detected. Is the camera broken and the hardware needs to be reinstalled?

Question 9 : How to detect whether a car camera is good or bad. How to judge the quality of a car camera by 5 points:

Chips, CCD and CMOS chips are important components of reversing cameras. According to different components, they can be divided into CCD and CMOS. CMOS is mainly It is used in products with lower image quality. Its advantage is that the manufacturing cost and power consumption are lower than CCD. The disadvantage is that CMOS cameras have higher requirements for light sources; CCD is a high-end technical component used in photography and videography. It also comes with Video capture card. There is a big gap in technology and performance between CCD and CMOS. Generally speaking, CCD has better effect, but it is also more expensive. It is recommended to choose CCD camera without considering the cost.

Clarity is one of the important indicators for measuring a camera. Generally speaking, products with higher resolution will have better image quality. Currently, products with a resolution of 420 lines have become the mainstream products of reversing cameras. If the debugging is good, products with a resolution of 380 lines can also be selected. However, depending on the chip level of each camera, the photosensitive components, and the level of debugging technicians, products with the same chip and the same level may have different quality effects. On the contrary, products with high definition will have poor night vision effects. some discounts.

Night vision, the night vision effect is related to the clarity of the product. The higher the definition, the night vision effect will not be very good. This is because of the chip itself, but good quality products have night vision. The visual function is good, and there is no image effect on the object. Although the color will be worse, it is not a problem to be clear.

Waterproof, reversing camera products are basically waterproof

To summarize: when choosing a reversing camera, consider the above aspects. The most important thing is to see and compare the images. actual effect. Nowadays, many cars have produced special reversing cameras. When choosing, you must first choose a reversing camera that is specific to your car model. If not, choose a universal reversing camera.

Question 10: How to check whether the car camera is broken or the wiring is bad? The wiring is more troublesome. There are two lines, one is the voltage signal line, which is the line connected to the reversing light, and the other is the camera signal feedback line, which is quite troublesome.

It is recommended to remove the camera and try it in another car. This method is the fastest. You can try it at a car decoration shop.