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因接触不良引起电视机故障是十分常见的。但下面两个因接触不良引起电视机故障的例子具有一定的特殊性。例1 光栅不正常故障现象:有一台夏普C-1820CK彩电,刚开机工作正常。待工作一段时间后故障出现,光栅一会儿正常,一会儿收缩变小。光栅收缩时图象变淡、彩色消失、音量变轻,光栅正常时一切正常。这种故障通常要开机几十分钟后才出现。但有时刚开机1～2
TV malfunction caused by poor contact is very common. However, the following two examples of TV failures caused by poor contact have some particularities. Example 1 grating is not normal Symptom: There is a Sharp C-1820CK color TV, just started working properly. After a period of time to work failure, grating normal for a while, shrinking smaller. When the grating contraction of the image fades, the color disappears, the volume becomes lighter, the grating normal everything is normal. This failure usually start after dozens of minutes before. But sometimes just boot 1 ~ 2