Microwave stop working ( no heat )

If your Miele H6800BM microwave is no longer heating food and there is a noticeable change in its operation, it is likely that there is a malfunction or component failure specifically related to the microwave function. Here are a few potential causes for the issue:
1. Magnetron Failure: The magnetron is a crucial component responsible for generating the microwave energy that heats the food. If the magnetron has malfunctioned or failed, it can result in the microwave not heating.
2. High Voltage Diode Failure: The high voltage diode in the microwave circuitry is responsible for converting the AC power supply to the high voltage DC power required by the magnetron. A faulty diode can prevent the magnetron from receiving the necessary power and thus lead to no heating.
3. Faulty Capacitor: Capacitors in the microwave circuit store and release electrical energy. If a capacitor associated with the microwave function is defective, it can prevent the microwave from generating the required power for heating.
Given the symptoms you described, it is likely that there is an issue with one of these components. It is recommended to contact a qualified technician or the manufacturer's customer support to inspect and repair the microwave. They will have the expertise and necessary equipment to diagnose and resolve the specific problem with your Miele H6800BM microwave.

Usually when a microwave's fuse blows, it will be dead, not partially functioning.
It may be a bad door switch or mount.
(Anybody in the home opening the door while it's cooking?)
See our help file on door switches here.

Hello


Power Supply

Check whether there is a proper power supply. Look to see whether the cord is connected to a grounded 3-prong outlet and the cord is fully plugged in. If the electrical system is built-in and no power cord is visible, replace or reset the household fuse or circuit breaker.

Microwave Functions

Some basic microwave operational steps may affect whether the microwave is heating. Open and close the microwave door, as the unit will not function with the door open, and push "Stop/Clear" to cancel any previous settings, such as the timer, which do not heat the microwave oven.

Setting the Microwave

Once the power to the microwave has been reset, or verified as working, and the microwave is ready to run, select a new cook cycle and press "Start" to see if the microwave begins to run and cook food as expected. Allow the food to cook for the alloted time and then open the microwave door and check to see if the food has cooked or heated. Choose a longer cooking time and restart the microwave if food is heating but is cooking slowly.

Repair

If all efforts to troubleshoot the function and power to the microwave still do not get the appliance heating food as expected, there may be a repair issue that needs to be addressed. Contact professional technician for advice.

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101 ]
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It is most likely the capacitor has shorted or the rectifier has shorted. Check with ohmeter, but make sure it is discharged first by shorting the capacitor with a wire.

The light inside the micro wave needs to be replaced most have a door on the back side that yo can remove the screw and unscrew the bulb and take to a applince shop and purchance a new one to replace.

if everything works except the heating, it is most likely the mag tube is on its way out.........that is the most common reason for it not too cook.......since the microwave is a GE and it is 3.5 years old, i would say you are better off buying a new microwave, the mag tube starts at around $70.00 and up + the labor it costs too have a service person put it in........around another $60.00

The controler board, or the power supply for the magnetron has probably failed, or a safety switch is not working properly. It is also possible that the controler board is in a protect mode because of a defect.

The magnetron uses very high voltage at very high current. There is a very large capacitor in the power supply for filtering the DC for the magnetron. This area of the microwave oven is very dangerous to work on. The power supply can be lethal if proper procedure is not complied to when working on it.

I strongly suggest that you do NOT attempt to service this yourself, unless you have the proper training, test instruments, tools, and service manuals to work on it.

After servicing, the tech is supposed to verify the operating power level, and do an EM (ElectroMagnetic) radiation leakage test. This is important after servicing this type of appliance.

Take the microwave oven in for an estimate. From this you can make an intelligent decision if you are going to have it serviced or replace it.

Excellent article about microwave ovens:
http://www.betterhealth.vic.gov.au/bhcv2/bhcarticles.nsf/pages/Microwave_ovens_safety_issues?Open

Microwave Oven FAQ from GE:
http://www.geappliances.ca/faq/faq5.jsp



Jerry G.

Generally, you get something unless the fuse inside is blown. There is generally a fuse inside the unit when you remove the button package. First, make sure that the outlet you have is good. Plug something else into it and see that it works.

Bad power diode, bad power capacitor or bad magnetron

Google on 'microwave not heating' and you'll get some sources of information