If your microwave oven malfunctioning, there are three common issues that could damage your microwave oven. In this article we will describe how to fix main problems of Microwave Oven Carrier ES820EJV-S.
Defective control panel - most common problem. If you wish to confirm if this is the real problem, then for this you will have to press each of the buttons on the control panel. If some of the buttons are working fine while others are not, you must replace the touchpad and the control panel.
Problem with the control board - another common problem. If microwave buttons on your microwave are not working, an issue with the control board. If the touchpad of your appliance does not respond but the display lights go on, this could be the issue. The control board is responsible for generating a low voltage which is in turn supplied to the membrane switch. In case the control board doesn’t generate a low voltage signal then you may need to replace it. To replace the control board, you will first have to disconnect the power supply and remove the cabinet and the assembly.
Last one - problem with the membrane switch. The membrane switch has a few soft touch electrical switches. There is a certain conductive coating on the touchpad which can go defective with repeated usage. To check this issue and to resolve it, you will need to unplug the appliance and remove the cabinet. Check the membrane switch using a multimeter for continuity. When pressed, it should show a few ohms of resistance. If not, you may need to get it replaced. If this doesn't work, there could be a defective part that requires a replacement, and you may need to consult a professional.