显示器行输出管损坏的原因分析及设计改进

行输出管损坏是显示器的高发故障，分析了因电源电压过高或逆程电容容量下降引起行电压过高或因行推动功率不足引起行输出管严重发热等最终导致行输出管损坏的主要原因，指出了更换行输出管要注意的要点，并针对手致行输出管损坏的主要原因，提出了通过改进设计减少故障发生的方法，改进后的显示器行输出管的损坏率将大大降低。

Cause analysis and its design improvement of CRT's horizontal output transistor damage

The damage of the horizontal output transistor is a common CRT failure. The reasons, which cause the higher horizontal output voltage because of the higher power supply voltage or the decreased back scanning capacity and cause the transistor serious heat because of the lower driving ability of horizontal output so that the horizontal output transistor will be broken have been analyzed in this paper. Also, the paper points out what special attention should be paid to while replacing an output transistor, and proposes the improving circuit design that will decrease the damaging rate of horizontal output transistors dramatically.