me wrote:
I cannot find anywhere replacement capacitor (680 uF, 200V). Can I use
any other value for capacitance? I need two of them replaced
(identical), they are inside switching power supply, the biggest ones.
If you are running on 240VAC you could use a single 330uF 400V cap.
bad idea.

In most switched mode power supplies, in 220V operation, the primary
capacitors are placed in series, so in that case the idea is actually
very usefull. You have to disable the voltage switch, of course.

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Met vriendelijke groet,

Maarten Bakker.