一、故障检修故障现象:开机无拉幕,图像出现后一秒钟闪动二、三次。仔细看图像应该是光栅闪亮,就像玩打鸭子游戏开枪时,屏幕上的鸭子部位会闪亮一下一样,随着图像的闪动,伴音也嗑吧,并且喇叭有“咔咔”声发出。场幅下边还有2cm 的压缩。分析与检修:此机是杂牌机,从图纸上看是由LC8633XX 系列 CPU 配合 LA76810组成、从故障现象有三种表现来看,很大可能是I~2C 总线数据出了问题,但也不排除电源有问题的可能性。首先用遥控器把亮度、对比度调到最小,故障现象一点变化也没有。说明故障与电源无关,不然调低亮度后故障会有变化。这时发现一个现象,在调亮度和对比度时,按下键1s(秒 First, troubleshooting Fault phenomenon: boot no curtain, a second flash two or three times after the image appears. Look carefully at the image should be shiny grating, just like playing duck game shot, the duck part of the screen will shine like the same, with the image flashing, accompanied by sound bar, and the speaker has a “Kaka” sound issue. Under the field there are 2cm compression. Analysis and maintenance: This machine is a brand-name machine, from the drawing point of view by the LC8633XX series of CPU with the LA76810 composition, from the failure of three performance point of view, most likely I ~ 2C bus data is a problem, but does not rule out the power supply There is a problem with the possibility. First of all, with the remote control brightness, contrast transferred to a minimum, the phenomenon of failure did not change. Note that the fault has nothing to do with the power supply, otherwise the fault will be changed after the brightness is reduced. Then found a phenomenon, in brightness and contrast adjustment, press the key 1s (seconds