在彩电维修中,有相当一部分“软”故障是由于小电解电容器容量变小或漏电所引起的,这些故障的共同特点是:电视机有声音和图像,但声音及图像出现异常,凭视听判断不像是38MHz或6.5MHz频率偏移所致。这时应该重点检查电解电容器,尤其是反馈电路靠近大功率元件的电容器。采用直观法和在路并接法相结合,便能很快找到故障电容器(如表1)。 In the TV repair, a considerable part of the “soft” fault is due to small electrolytic capacitor capacity or leakage caused by the common fault of these features are: TV with sound and images, but abnormal sound and images, with audio-visual judgments Not like 38MHz or 6.5MHz frequency offset due. At this time should focus on electrolytic capacitors, especially the feedback circuit close to the power components of the capacitor. The combination of the visual method and the parallel method in the street can quickly find the fault capacitor (Table 1).