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有线电视网络特殊故障两例□刘俊波李贵文（黑龙江省友谊县有线电视台１５５８００）１现象：用户无信号，经查分配放大器和分支器损坏，并且电缆接头处烧焦。分析：从电缆烧焦现象看，是有大电流通过电缆。仔细观察发现放大器内跳火。经测放大器外壳带有２２０Ｖ交流电，...
Two cases of cable network special failure □ Liu Junbo Li Guiwen (Heilongjiang Youyi County Cable Television Station 155800) 1 phenomenon: the user no signal, the distribution of the amplifier and the splitter by the investigation damage, and the cable connector burned. Analysis: From the scorching phenomenon of the cable, there is a large current through the cable. Careful observation found that the amplifier within the flashover. Amplifier shell by the test with 220V AC, ...