目前,大屏幕彩电一般都采用I~2C总线控制系统,其故障表现有时非常奇怪,因而其检修比普通彩电的检修复杂,对维修人员的要求也就相应要高一些。下面谈一下大屏幕彩电的检修注意事项,供参考。一、基本掌握不同品牌、不同型号的大屏幕彩电所采用的机芯、特殊电路,了解其功能和特点,弄懂特殊电路的基本工作原理。不应盲目乱拆乱焊,以免使故障扩大。二、根据原理图弄清所修彩电各部分的供电电压,接线、插头之间的关系。特别是要掌握关键点电压,从而根据关键点电压数值的变化,尽快找到故 At present, the large-screen color TV generally use I ~ 2C bus control system, the performance of its fault is sometimes very strange, so its maintenance over the average color TV repair complex, the maintenance personnel requirements will be higher accordingly. Here to talk about the large screen TV repair notes for reference. First, the basic masters of different brands, different models of large-screen color TV using the movement, special circuits, understand its functions and features, understand the basic working principle of special circuits. Do not blindly dismantle the welding, so as to avoid the failure to expand. Second, according to the principle map to identify the repair of the various parts of the color TV power supply voltage, wiring, the relationship between the plug. In particular, to grasp the key point voltage, so as to change the value of the key point voltage as soon as possible