DVD player CyberHome does not work at all
Cyberhome CH-DVD 452
Description of failure
The device does not work at all. Display stays empty.
Troubleshooting
When measuring the output voltage of the power PCB, this voltage is not stable. An investigation into the electrolytic capacitors shows a bad impedance behavior. Replacing the capacitors solves the issue. Check out the capacitor section for more details about broken capacitors.
Investigation in the electrolytic capacitors
Both broken capacitors, the 1000 µF and the 2200 µF device are analyzed by an impedance analyzator (full line red and blue). The dash-doted lines shows the calculated waveform of healty capacitors.
