Note on SMPS repair 1

DC link capacitors expose the rectifier and power line to extremely high input currents at the moment of turn-on, potentially destroying the rectifier diode or causing the power fuse to blow.

http://electronics360.globalspec.com/article/6730/critical-components-behind-switch-mode-power-supplies

http://www.repairfaq.org/sam/smpsfaq.htm

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