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彩色电视机在发生故障前,往往会有先兆。及时发现故障前的先兆,对彩电的使用、维修及延长使用寿命都十分有益。一般来说,彩电发生故障前通常有以下六种先兆。l.开机后整个图像画面逐渐缩小、变暗。说明行输出部分或稳压电源有故障。2.图像忽大忽小不稳定。表明彩电内的高压电源
Color TV in the event of failure, there will always be a sign. Timely detection of precursor before the failure, the use of color TV, maintenance and extend the useful life are very useful. In general, the color TV before the failure usually have the following six aura. l. The whole image after starting up is gradually reduced and darken. Description of the output part of the line or power supply is faulty. 2. Suddenly small and unstable image. Indicates that the high-voltage power within the color TV