论文部分内容阅读
故障现象:背景灯亮时听筒有刺耳的交流声。据顾客介绍原来曾摔裂显示屏,到一维修店更换液晶屏,第二天才发觉背景灯亮时听筒有交流声,返回到该维修店,对方称不属于同类故障不保修,索价又太高,谈不拢再送来我中心维修。排除此故障其实非常简单,只需将后壳近大线处带胶帽的螺丝松一、二圈即可,分析其原因:可能是背景灯高电压通过从而感应听
Symptoms: the background light when the handset has a piercing hum. According to the customer’s original had split screen, to a repair shop to replace the LCD screen, the next day only to find the background light when the handset has a hum, return to the repair shop, the other said does not belong to the same type of fault is not warranty, the price is too high Can not agree to send to my center maintenance. To rule out the failure is actually very simple, just the rear shell near the line with a plastic cap screw loosening one or two can analyze the reason: the backlight may be high voltage sensor to listen