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拆机,保险管F601(3.15A)发黑,说明机内严重短路。机主讲:由于220V市电电路经检修后误接380V烧坏的。不忙于换F601,测桥堆D601(RBV—406H)正极对地呈短路状态。为判断何元件击穿短路,断开厚膜电路IC601(STR—S6707)开关管集电极“!脚、发射极#$脚与外围电路,测%、(’脚未击穿,初
Disassemble, fuse F601 (3.15A) black, indicating a serious short circuit within the machine. Machine main speaker: Since the 220V power supply circuit after troubleshooting 380V burned out. Not busy for F601, measuring bridge pile D601 (RBV-406H) positive to ground short-circuit condition. In order to determine what components breakdown breakdown short circuit, disconnect the thick film circuit IC601 (STR-S6707) switch collector ”foot, emitter # $ foot and peripheral circuits, measured%