故障现象 接上电源，按开机键，屏显示黑方块，且能正常发射接收。 故障分析 经机主介绍，该机曾进过水，已修过未好。从现象分析：屹屏显示电路有故障；亿软件出错（码片有问题）。在显示电路中有两路电源，一路是来自Ｖ７１０第５脚３．１５Ｖ电压；另一路由 Fault phenomenon connected to the power, press the power button, the screen shows the black box, and can normally transmit and receive. Fault analysis by the main introduction, the aircraft had been into the water, has been repaired is not good. From the phenomenon analysis: Yi screen display circuit failure; error billion software (chips have problems). In the display circuit has two power supply, all the way from the V710 pin 5 3.15V voltage; the other route