Fujitsu E19W-5 quick white flash when plugged to AC then no life

[davidebaldini]

Symptom: my Fujitsu E19W-5 emits a white flash from the CCFL lamps for a split second after being plugged to AC, then it behaves as if unplugged from mains: no backlight, no image on the LCD, no LED light on the front bezel; it remains in this status indefinitely. Re-pugging the AC cable repeats the behavior.

I have fixed it by replacing the four capacitors on the power supply circled in the photo. It is functional without defects now. This PCB seems identical to the Fujitsu E19-5 that was discussed here for the same symptoms, for which replacing C910 alone was sufficient.

[davidebaldini]

I also replaced the three electrolytics on the logic board, the original specification for all three is: 100µF 35V 105C.

Before replacing these, the monitor still wouldn't turn on occasionally, it seemed temperature dependent.; heating those three capacitors with an air gun would make it work.