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83P机芯彩电,是日本三洋公司的产品,国内相同的机型有昆仑S471、孔雀 KQ-47、成都C47-851、黄山AH4724C-1、金鹊 47DCl、红岩 SC4712、春笋CDS471等。该机芯彩电,集成度高,电路先进,是我国重点发展的优选机型。为了帮助维修人员熟悉该类机芯彩电的故障维修,本文以其典型机型三洋CTP3904为例,较系统介绍各重要电路的故障检修方法,希望读者能在检修中有所借鉴。一、电源电路的故障检修电源部分故障,常表现为无光、无声,有时表现为S型扭曲、交流声或伴音干扰图像。针对无光、无声故障,应首先判定故障发生的大致范围,即首先认定保险丝是否烧毁,整流电压有无输
83P movement color TV, is the product of Japan’s Sanyo company, the same domestic models Kunlun S471, Peacock KQ-47, Chengdu C47-851, Huangshan AH4724C-1, Magpie 47DCl, Hongyan SC4712, bamboo shoots CDS471 and so on. The movement of color TV, high integration, advanced circuits, is China’s key development of the preferred model. In order to help maintenance personnel to be familiar with the failure repair of color televisions of this kind of movement, this paper takes the typical model Sanyo CTP3904 as an example to systematically introduce the troubleshooting methods of various important circuits and hopes that the readers can learn from the maintenance. First, the power circuit troubleshooting Power failure, often manifested as dull, silent, and sometimes for the S-type distortion, hum or audio interference images. For dull, silent failure, should first determine the approximate scope of the fault, that is, first determine whether the fuse is burned, the rectifier voltage is no loss