The main role of the amperage capacitor on the power supply circuit board is to filter, isolate through the crossover, and store the voltage boost. An if the capacitor is damaged, these functions will only fail to stop the circuit, or reduce efficiency, or not work properly, will only open circuit, will not break through, will not damage other components. Nor will it be dangerous to the user.
How to measure when the safety capacitor is broken_The performance of the broken safety capacitor
1: Capacitor internal short, broken circuit damage, the failure phenomenon is to burn the switch tube and other current limiting components, such as insurance and switching power supply in the current limiting resistor. Capacitor short, broken circuit damage work in high voltage, high current (such as color TV switching power supply, line output circuit) in the filter capacitor, when for some reason the voltage rises and exceeds its withstand voltage value, so that the breakdown short circuit damage, or due to rectifier diode damage so that the polarized electrolytic capacitor equivalent to work in the AC circuit, in the larger reverse leakage current fever and short circuit damage. As the current flowing through the capacitor when short-circuiting is very large, the general capacitor will burst or make its sealing rubber plug expansion out. Filter capacitor short circuit, often appear fuse or current limiting resistor blown, power supply thick film block or switch tube, rectifier tube breakdown and other failures. The main performance of the machine “three no”, this failure in all types of switching power supply with commonality.
2: capacitor capacity reduction caused by inefficiency or slight leakage, the fault phenomenon is the TV image “S” distortion or line desynchronization phenomenon, for the current IIC bus TV sets with some special fault phenomenon, if the impact of synchronization card critical state, the accompanying sound may affect the quality of the TV set, making the accompanying chapter at any time appears. The main reason is that the parameters of the capacitor changed, but not completely failed, to a certain extent there is still a role, but not up to the proper role, so that the existing fault phenomenon appears. And this kind of failure is not easy to judge and exclude.
3: the capacitor capacity disappeared caused by the failure, complete leakage or burst, is the most difficult to identify and repair the failure of the capacitor in the power supply, because the measurement of capacitor parts, with a multimeter test all normal, but the capacitor installed in the circuit, the capacitor capacity completely disappeared, which is one of the most difficult to repair the circuit soft failure, that is, the components can not withstand the voltage, a voltage presence, it is easy to disappear completely .
1000uf 400v Elektrolitik Kondansatör

1000uf 400v Elektrolitik Kondansatör

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