故障现象:有时开机正常,有时自动关机(短则几分钟,长则几小时)。出现故障后偶尔也能自动恢复,毫无规律,关机后,无光无声。分析与检修:从表面上看,似是接触不良,但当正常收看时,无论怎样敲打电视机,也不会关机,可见并非有元件接触不良或虚焊。经仔细看、听,发现当故障出现时绿色指示灯不灭,红灯不亮,仅绿灯比正常时 Symptoms: sometimes boot normally, sometimes automatically shut down (a few minutes, long, a few hours). Occasionally after the failure can be automatically restored, there is no law, shut down, silent. Analysis and Maintenance: On the surface, seems to be bad, but when normal watching, no matter how the beating TV, it will not shut down, we can see that there is not a bad component or Weld. After a careful look, listen and found that when the fault appears green light is not off, the red light is not bright, only the green light than normal