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您在维修过程中是否有过“巧妇难做无米之炊”的尴尬?花费大量的时间和精力找出了故障元件,却苦于无处寻找而弃之不修。然而,如能仔细琢磨,很多元件完全可来他个“张冠李戴”。现举数例谈谈我在代换时的一点体会。例1:一台牡丹牌53 cm(21英寸)彩电,刚开机时无色,数分钟后彩色正常经降温法试验,发现为μPC1423的(20)脚外接4.43 MHz晶体损坏。用多种市售晶体装上均无彩色。估计原晶体型号(JA18B)与市
Have you ever had any embarrassment in the repair process? “It takes a lot of time and energy to find out the faulty components, but it is hard to find nowhere to be discarded. However, if carefully pondering, many components can come to him a ”Zhang Guan Li Dai." Here are a few examples to talk about my experience in substitution. Example 1: A Peony brand 53 cm (21 inch) color TV with no color when turned on and normal color after a few minutes After cooling test, it was found that the (20) pin of the μPC1423 was damaged by 4.43 MHz crystal. With a variety of commercially available crystals are no color. Estimated the original crystal model (JA18B) and the city