All new products carry an implied warranty that provides protection if the product doesn't work during ordinary use. Laws covering implied warranty vary by state. The consumer-protection agency in your state can tell you how long implied warranties remain in effect where you live and whether the retailer must repair or replace the item or refund your money.

Note that the implied warranty doesn't extend to products sold explicitly "as is" or for which the seller puts in writing that no warranty is given. Selling products "as is" is illegal in Kansas, Maine, Maryland, Massachusetts, Mississippi, Vermont, West Virginia, and the District of Columbia, according to the Federal Trade Commission.

Click here to get contact information for the consumer-protection agency in your state.