The cooker has scratches inside ,where the rice is cooked.It is unhealthy as far as I read online, the material should be without scraches.how can I fix it or get it replaced,only the pot replaced.

SOURCE: Sticking of cooked rice inside pan

Buy a rice cooker with non-stick inner pot.

SOURCE: rice cooker vs a crocpot/slow cooker

I have both and use both for different things. The rice cooker cooks faster than the slow cooker. What the Crockpot does really well, the rice cooker cannot do. For example, with the crock pot, you can buy less expensive cuts of meat and because of the slow cook method, they will be tender, juicy, and delicious. You can make soups, stews and casseroles in a crock pot and the great thing is that you can turn it on low, go to work, and when you come home, dinner is done. You can cook the same types of things in a rice cooker but you can't leave it all day. You CAN saute', fry, etc,. in your rice cooker which you can't do in a crock pot but for dense veggies and tougher cuts of meat, stew beef for example, there's no comparison. I have an Oster Rice Cooker and Steamer which I use nearly every day. I cook rice, obviously, casseroles, veggies, spaghetti and meatballs, all kinds of side dishes and soups in it. I use the crockpot several times a week but more often in the Fall and Winter when I make soups, stews, chilis, roasts and BBQ. Oh my gosh, you have to try BBQ Ribs in the crock pot! They melt in your mouth. Go to Yahoo! Groups. You'll find all kinds of great info for both your rice cooker and crock pot. I have one of the fancier, more expensive crock pots because I take it to work with me one day a week for lunch. The lid seals and it comes with a carrier. If you do most of your cooking at home, you can spend a little less and get a good one. I recommend getting one that has at least 3 heat settings though. Different foods require different temps. Happy Cooking!

SOURCE: 6 cup rice cooker

its very easy if you put 6 cups of rice= 6 cups of water
5 cups rice = 5 cups water ...equal proportion

SOURCE: Rice burning at bottom of cooker

I also have this problem and I fixed it by adding in a little more water and by removing the power cord from the outlet immediately after the cooker finishes it's cycle. Not ideal, but it does save my rice.

SOURCE: farberware 10 cup rice cooker blows fuse after replacement

yeah it has a short in it or just a wire lose from the heater.
open up and check. If you have an ohm meter check the heater. It should not be infinit