i have a samsung er-4900 cash register. its clean but when i plug it in it wont turn on even with the keys does anyone know how to fix it or make it turn on and regester the lights and electronic systyem and keys

james- texas, January 2011

It sounds like it might have a faulty memory battery if it is dead. You may have lost the programming also. Have the battery checked

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If anyone needs a Samsung/ Sam4s ER-4900 manual,

http://the-checkout-tech.com/manuals/cashregisters/Samsung_ER-4900_dealer_pocket_programming_guide_manual.html

Registerman, January 2011