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在彩电内的中周工作状态将影响图像是否清晰稳定,彩色是否鲜艳,伴音是否清晰宏亮。电视机使用年久后,中周内元件参数将发生变化,致使中周的工作频率偏移而电视机不能正常工作。万用表又能测工作电压而测不出频偏,一些初学者碰到此类故障往往束手无策或是越调越乱。
In the color TV week working conditions will affect whether the image is clear and stable, the color is bright, the sound is clear and loud. After the television is used for a long time, the parameters of the components will change in the middle of the week, causing the working frequency in the middle week to shift and the television can not work normally. Multimeter can measure the operating voltage and can not detect the frequency offset, some beginners encountered such failures are often helpless or more tune chaos.