First turn on the control panel to be removed from the waste electrical appliances (rice cookers soybean milk machine all kinds of home appliance is ok)
看下排线接口 有没有VCC或者+5V之类的标注有的话接5V电源的正极 GND接负极 如果没有排线接口的 在电路板上找7805或者78L05的稳压芯片 然后拆下稳压芯片 在GND接5V电源负极 原来稳压芯片输出端接5V正极 或者找电源滤波电容接电源也可以 通5V电源以后 就可以看到数码管或者指示灯有显示了 然后操作按键设置时间和计时功能就可以了

CodePudding user response:

Add if 5 v power when electricity is connected digital tube display E must be the original start temperature thermistor components such as line plug in time properly