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故障现象:开机后,在荧屏上方的1/5处有红绿两条线,不断地向上移,持续1～2min后消失,待关机后再次开机则故障会消失,当机器停放一段时间后(冷机)开机,故障又会出现。检修过程:这个故障检修的难点在于故障持续时间相对较短,不便检测;另一方面故障重现的时间间隔较长,需要等到电视
Symptom: After powering on, there are two lines of red and green at 1/5 above the screen, continuously moving up and disappearing for 1 ~ 2min. When the machine is switched off again, the fault disappears. When the machine is parked for a period of time Cold machine) boot, the fault will appear again. Maintenance process: The difficulty of this troubleshooting is that the fault duration is relatively short, inconvenient detection; the other hand, the longer the fault recurrence interval, you need to wait until the TV