CD-player Pioneer X-HM11-K does not turn-on

Description of failure

The device does not start.

Troubleshooting

If the device does not turn on, first check the output voltage of the internal power supply unit. In this case, the output voltage of the power supply unit is 0V. When checking the individual components of the power supply unit (flyback topology), it is noticeable that the diode has a high resistance. After replacing the diode, the device works perfectly again.

Broken diode: MBRF20200CT