If the fuse and other components needed replacing then you probably have a short circuit in a power section of the machine. It should go to a dealer as it will probably require circuit tracing.
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If anyone needs a Samsung ER-5200/ ER-5200M manual, c-tech collective have them here:
http://the-checkout-tech.com/manuals/cashregisters/Samsung2.php
Registerman, December 2010