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引言:维修发现,康佳部分彩电+B电压过压保护“起控点”存在过高问题,而“起控点”究竞有多高及如何调整?笔者以康佳T953P彩电为例,介绍有关维修经验,供同行参考。该机开关电源及保护电路如图1所示。它是由四个三极管组成的分离元件开关电源,俗称“四管分离电源”,其中V401为取
Introduction: Maintenance found that some of the Konka color TV + B voltage overvoltage protection “starting point” there is too high a problem, and “starting point” research competition how high and how to adjust? I Konka T953P color TV as an example, describes the maintenance Experience for peer reference. The machine switching power supply and protection circuit shown in Figure 1. It is composed of four transistors of discrete components switching power supply, commonly known as “four separate power supply,” which V401 to take