Fujitsu Siemens LCD Color Monitor P15-1

Manufacturer: Fujitsu Siemens Computers
Model: P15-1, S26361-K902-V150
Rev: 02 G4/S6

Description of failure

Does not turn on. Green power LED shows some flickering.

Failure investigation

When checking the power supply, a flyback topology, the output capacitors seem to be blown up. In this case, it can be clearly seen that two of four electrolytic capacitors are damaged. It is always recommended to replace all capacitors, as it typically not visible if a capacitor is damaged or not.

Nominal capacitance is 1000 µF at 16 V. The two blown up capacitors show 550 µF and 775 µF by using a simple multimeter to check for the capacitance. The others show good values, but should be replaced anyway as mentioned above. Make sure to use 105 °C components while replacing.

Capacitor investigation

Some theoretical background about broken electrolytic capacitors can be found here.