Yes our oven started beeping an error message a few months ago. If you still have your handbook that came with the oven - it might have the "error codes" listing like mine did. It told me that the temperature sensor needed replacing. I went to several appliance parts places at google and entered the model and make, then ordered the part. It was only about $25 for mine and was easy to fix. There was a plate in the back of the oven to screw off and plug in the sensor. It was a needle looking part - a thermostat essentially. I had to reset the panle where the error code beeps and that was that! The part can likely be ordered from the manufacturere or one of the appliance parts houses - many to choose from. I used one called http://www.repairclinic.com/ fault codes at http://www.repairclinic.com/0078.asp and there are forums there also. Another place I like to look is http://www.doityourself.com/ - you can post your problem there and folks will answer pretty quickly. List the make and model number and someone will try to help.