Power Supply: 5V Standby Loss before supply



loss due STB 5V voltage supply before does not work, possibly due to the following reasons.

* Loss of 300V DC voltage primary side

- When the source is the incident light power as convolution, short the diode rectifier fuse will explode and take 300V DC voltage shock if the bridge diodes in the rectifier diodes will lead to explosion off the fuse or thermistor, voltage 300V DC lost if the lights short main source of power will cause explosive fuse, thermistor, and pulling off the shock result of the rectifier diodes, voltage 300V DC power supply * before without wavering. - Power supply fluctuations will be lost before being incidents such as power cuts or primer, weld bubble lights and power resistors, capacitors to feedback oscillators. - If the bait or flaking off leg resistors R, C feedback before the supply takes knife active, the voltage loss - If the power light peeling feet and took circuit voltage fluctuations and take off - If short explosive power lamp will fuse, thermistor off and can short the rectifier diodes voltage AC 220V - If short or off the rectifier diode voltage is 5V voltage loss STB Review lessons related to the disease,