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一些旧彩电出现跑台、图像信号弱等故障。由于中频电路失调引起的故障,往往是图像中频和 AFC 中周的瓷管电容氧化变质所致,通常是更换电容器去排除故障。但碰到彩电的中频通道频率严重失调,在业余条件下因缺乏必要的调试仪器,尽管经过反复调整仍不能把偏移的中频调至正常值;另外,中调磁芯损坏,而又无法配置到合适型号的配件,这些在维修旧彩电中遇到的棘手问题,可以通过购置一块由厂家调试好
Some old TV appear treadmill, weak image signal failure. As a result of the malfunction that the intermediate frequency circuit is out of tune, it is often the picture frequency and AFC week porcelain capacitor oxidation deterioration, usually replace the capacitor to eliminate the trouble. However, the color TV IF channel serious imbalance in the amateur condition due to the lack of necessary debugging equipment, though after repeated adjustments can not be shifted to the normal frequency IF; In addition, the core is damaged, but can not be configured To the right type of accessories, these tough problems in the maintenance of the old color TV, you can buy a piece of debugging by the manufacturer