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看了贵刊2002年第10期刊登的《更换电视机管座的技术问题》一文后,笔者深有体会,但就该文涉及的一些技术性问题笔者却有不同的看法,现就此作一些说明及补充,不对之处敬请各位同行指正。大家都清楚,当电视机出现刚开机时的图像模糊、发暗,过一会儿逐渐出现明亮清晰的图像或开机显像管尾部发出“嗤嗤”声,无光、无图像,十几分钟后才出现很暗且很模糊的图像时(此时伴音始终正常)。对于这种现象,广大维修人员已司空见惯,常规的维修方法是将管座换新,即能排除故障,然而,笔者多年来遇到了一些大、小屏幕的彩电,在更换管座时并非那么顺利,更换管座反而换出了故障。
After reading the article titled “Technical Problems in Replacing TV Headers” published in No. 10 of your edition in 2002, I have a deep understanding of it. However, I have some different opinions on some technical issues involved in the article. I hereby give some explanations And add, right, please colleagues correct. It is clear to everyone that when the picture on the TV is just turned on, the picture is blurry and dark. After a while, bright and clear images gradually appear or the picture of the power-on tube emits “chi chi” Dark and very vague images (at this time the sound is always normal). For this phenomenon, the majority of maintenance personnel have become commonplace, the conventional method of repair is to replace the tube base, that is, to troubleshoot, however, the author over the years encountered some large and small screen color TV, tube replacement is not so smooth Replacement of the tube instead of replacing the fault.