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一台PC500文曲星,按开机按钮后,液晶显示屏只闪了一下就不再有任何显示了。接着对各按键进行操作时,发现各键功能均能实现,仅液晶无任何显示。估计是液晶显示的供电电路的故障。用小刀小心地挑开液晶显示屏的塑料护层,就可见到一条宽2 cm的连接软带。仔细观察,发现软带右侧第一条线路有裂痕。将软带所连接的印刷电路板上的三个固定螺钉拧下,然后卸下文曲星底座下的四颗螺钉,再拧下软带端头的两个固定螺钉,再从上下夹缝中向上挑出软带。测出有裂痕的线路已经开路。由于该软带是PC500文曲星的专用元件,很难购到代用品。笔者试用一根韧性较好
A PC500 Wenquxing, press the power button, the LCD screen flashed only no longer have any shows. Followed by the operation of the keys, found that the key functions can be achieved, only the LCD without any display. It is estimated that the liquid crystal display power supply circuit failure. Carefully with a knife to open the LCD plastic cover, you can see a 2 cm wide connecting soft. Careful observation and found the first line on the right side of the soft crack. Unscrew the three fixing screws on the printed circuit board to which the flexible tape is connected, and then remove the four screws under the base of the Wenquxing satellite, and then unscrew the two fixing screws at the ends of the flexible tape and then upward Soft belt. The cracked line has been opened. As the soft belt PC500 Wenquxing dedicated components, it is difficult to purchase substitutes. I try a toughness better