Miele 5040BM - microwave function starts for a momemnt, then oven power shuts off before restarting with just clock showing...

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.

Defective door interlock or related wiring

This is happening due to either the magnetron, or the Power Diode, or both, is breaking down, under load, then the unit detects the fault condition, & then, for safety reasons, to avoid a fire or explosion, shuts down the system. You need to take it in to be looked at please obtain a "Quote" before proceeding with any work. This way you can decide to repair or replace.

In all likelihood the mangnetron has failed, or perhaps even the Power Supply. or a fault that is shutting the system down for safety reasons You need to have it serviced by a reputable service centre/man. Ensure you get a firm "Quote" before proceeding, and remember these days the cost of repair can equal or exceed the price of a new one.

In all likelihood the mangnetron has failed, or perhaps even the Power Supply. or a fault that is shutting the system down for safety reasons You need to have it serviced by a reputable service centre/man. Ensure you get a firm "Quote" before proceeding, and remember these days the cost of repair can equal or exceed the price of a new one.

Problem identified as plastic pushbutton on control panel, solution: interchanged with turntable on/off button (nevrer used). Had paid Miele €115 call out (for person who knew nothing about microwaves), Miele operate a closed shop. Local repair service say Miele will not supply parts, Miele designated repair agent will not repair microwaves, Miele will only send "engineer" to customer, no drop off facility. Was forced into buying new microwave oven from Miele as only way of recouping callout charge. Subsequently had a go myself with above positive positive result - now have a spare microwave cooker.

getting t-4 on clock display and random beeping<br /> cancelling and unplugging don't fix it<!-- from fixya rte -->

The first thing to try is a "hard reset". Unplug it from the power line for a few minutes, plug it back in, set the clock, then try again.

Let us know if the hard reset doesn't fix it.

Please reply back with your brand and full model number.

Sounds like the power inverter