Whether what your old microwave requires is a replacement of the main component to the smallest part of the appliance, it is not a problem purchasing one since these are available in stores. Some of the main components of a microwave include the cavity, which is that part covered by the appliance's door; the metal plate, which is linked to the aperture and perforated with some holes to allow light to penetrate the cavity and thus reflect the microwave; magnetron tube, which is that part controlling the amount of microwaves that enter, the power safety and heating features of the device; the stirrer fan, that part which can be found behind the appliance; the front panel which is where the buttons can be found; and the control switches, which function to control heat and temperature. You can clean your microwave oven anytime you want to. Here are some steps in cleaning it: 1. Unplug first your unit s electrical cord. Before you start cleaning your microwave, unplug its power cord. After doing so, check the cord for dirt and damage because a damaged cord is dangerous. If the cord is still in good condition, wipe it down to eliminate dirt and dust. Most microwaves have a removable and rotating component where the turntable turns. Remove this so you can remove the dirt or any cloying particles beneath this component. If you are unsure whether there's a removable component, you can refer to the user manual. 6. Now let's proceed with the scrubbing of the interior. If we throw into the equation the 3000 wattage generated by conventional ovens as opposed to 600 watts to 1650 watts by microwave ovens, you can pretty much discern the discrepancy of energy saved when using the latter. Taking into account the efficiency of a microwave oven compared to a convection oven in terms of cooking food only makes the result more exponential. The Different Types Of Microwave Ovens Since microwaves are present in almost every home across the country, it is now safe to say that this appliance is a great American kitchen staple. While it cannot (or it isn t designed to) replace the conventional gas range, it provides users a good and more convenient way to heat and reheat their food in case they need a quick meal. The standard microwave works best in heating food and those ready to cook meals. On the other hand, the convection microwave allows you to grill, heat, and cook since it is a combination of the features of a microwave oven and a convection oven. Size matters. Depending on your needs and of course, the space available, you can choose between the compact and built-in microwaves.