Restoring Malfunctional Fujitsu Inverter Circuit Board

Restoring Malfunctional Fujitsu Inverter Circuit Board can help engineer to get the expensive and hard-to-acquire board back to normal operation;

If the Fujitsu Inverter Circuit Board has failed due to switching power supply is damaged, an obvious feature to show that Switching power supply damage is there is no display on the screen when power converter on, Fuji G5S uses a two-stage switching power supply, it first intermediate DC circuit DC voltage from approximate 500 V to more than 300 V, and then output 5V through first stage switch power supply, and 24V multi-channel power supply.

The most commonly seen switching power supply damage includes switch tube breakdown, pulse transformer burnout, and secondary output rectifier diode damage, filter capacitor used for too long, resulting in feature changes in capacitance characteristics.

The ability of load carrying deterioration can also cause damage to the switching power supply easily. Fujitsu G9S apply one piece of waveform chip dedicated for switching power supply, due to the fleeing from high-voltage main circuit, often lead to chip damage, because the chip is rarely available on the market and makes it become more difficult to repair electronic PCB Board.