[ Huaqiang Security Network News ] Recently, I saw a lot of people on the Internet asking me, what is the reason why the CCD board machine has no picture when the infrared camera is being monitored? Combining this years of experience, I have compiled four reasons for everyone's reference. 
1. Surveillance camera itself is faulty, because only this camera has this fault, then the internal program of the surveillance camera may crash, recover after power failure, mainly caused by the reset circuit. Continue to crash in the later stage; Solution: Replace
2. The power supply of the surveillance camera is insufficient: the power of the switching power supply is not enough, causing the switching power supply to overheat, thus causing thermal protection. Check whether the temperature of the mode power supply is in the field. If the cold ice is the power supply, the solution is: replace the power supply;
3. The transmission line has power supply: if it is connected with the AC power on the video transmission line, it will cause the monitoring camera head and the electrolytic capacitor inside the distributor to charge, which will block the video signal output. I have tested it in the laboratory and also several. The problem was discovered on the spot. Test method: Measure the video cable voltage with a multimeter. Solution: Find the power connection place or add my anti-jamming device. The internal isolation function is to prevent this phenomenon, and the maximum voltage can be 220 volts on the video circuit and the device works normally. Will be transmitted to the surveillance camera or the main control room.
4. In the construction of the project, the line is reversed. If the wire is too thin, the pressure drop is large and the camera cannot be started. The solution is regular construction. The multimeter is used to input the voltage and current of the camera.
Sometimes you will use several methods when you encounter this problem. It is best to slowly eliminate it. The wiring construction should be careful. The camera and power supply should be selected by regular manufacturers. For example, the infrared camera of Shenzhen Kungfu Security, the monitoring CCD board of Shenzhen Feilong Weishi. machine.
2. The power supply of the surveillance camera is insufficient: the power of the switching power supply is not enough, causing the switching power supply to overheat, thus causing thermal protection. Check whether the temperature of the mode power supply is in the field. If the cold ice is the power supply, the solution is: replace the power supply;
3. The transmission line has power supply: if it is connected with the AC power on the video transmission line, it will cause the monitoring camera head and the electrolytic capacitor inside the distributor to charge, which will block the video signal output. I have tested it in the laboratory and also several. The problem was discovered on the spot. Test method: Measure the video cable voltage with a multimeter. Solution: Find the power connection place or add my anti-jamming device. The internal isolation function is to prevent this phenomenon, and the maximum voltage can be 220 volts on the video circuit and the device works normally. Will be transmitted to the surveillance camera or the main control room.
4. In the construction of the project, the line is reversed. If the wire is too thin, the pressure drop is large and the camera cannot be started. The solution is regular construction. The multimeter is used to input the voltage and current of the camera.
Sometimes you will use several methods when you encounter this problem. It is best to slowly eliminate it. The wiring construction should be careful. The camera and power supply should be selected by regular manufacturers. For example, the infrared camera of Shenzhen Kungfu Security, the monitoring CCD board of Shenzhen Feilong Weishi. machine.
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