if you have an issue with something powered by electricity, why do you need to count till 5/10 when you unplug/turn off power before restarting it?
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To allow stored charges from various components including capacitors and memory and such to dissipate. Switch mode power supplies especially can take up to 15 seconds to completely dissipate the charge they hold. That’s why your monitor lights blink for a while even when you pull the plug.
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