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故障现象:一台牡丹49C1平面直角遥控彩电,开机不能正常启动。起初打开电源时机内有“噗、噗、噗”的断续响声,光栅随之闪烁,数秒钟后才能启动起来;后来启动时“噗、噗……”声节奏加快,有时甚至启动不起来,机内出现连续的“吱、吱”声。但每次若启动成功,则长时间收看(即使有振动)也一切均正常,关机后也可立即启动,间隔数分钟后再启动则故障依旧。分析检修:根据故障现象判断为一种软故障,并可
Symptoms: a peony 49C1 rectangular remote control TV, boot can not be started normally. At first, when the power is turned on, there is intermittent sound of “puff, puff, puff” which will flash after a few seconds to start up; when the puff pops up later, the sound rhythm accelerates and sometimes it will not start up, The machine appeared continuous “squeak, squeak” sound. But each time if the start is successful, then watch for a long time (even if there is vibration) and everything is normal, can also be started immediately after the shutdown, the interval of minutes and then start the fault still. Analysis and maintenance: According to the fault phenomenon to determine a soft fault, and can