机器电源是STRW6553A   伴音LA4266  场快STV9302  CPU T00Y12--02M01接假负载灯泡忽明忽暗,电压在70--108V之间摆动,代换光藕未排除故障,断开CPU的28脚(开关机脚),故障依然,代换6553A故障排除.