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Runs for 4-5seconds then shuts down - Bosch 800 HMB8050 1000 Watts Microwave Oven

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  • Jim Wareham Jan 04, 2013

    Rebooted device with no change. Makes ooh sound when running. Fan and lights are working. Slight odor of burnt electronics.

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1 Answer

Magic chief mcd1611w powers up then shuts self down?


It depends on how long it runs and the oven status (idle or dead?) when it shuts down.

It may be that the internal cooling fan is not running or is blocked, and that can cause overheating and thermal shutdown until it cools off.

For more free DIY and other help & advice, feel free to contact me.

William E. Miller, AS-EET
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http://www.microwavecontrol.com
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"Recycling by repairing since 1982"

Mar 15, 2017 | Magic Microwave Ovens

1 Answer

Microwave runs intermittently...heating seems to shut off when warmed up and runs again when cooled down...is thermostat defective or does it need to be adjusted?


Some ovens have a thermal protector on the magnetron. It opens if the magnetron gets too warm. Or, sometimes they will open at too low of a temperature. Another possibility is that air flow to the magnetron for cooling is bein restricted, or the cooling fan is defective.

Jan 09, 2017 | Microwave Ovens

1 Answer

Microwave runs for 5 seconds then shuts down displaying F9 HELP


If the microwave runs for a few seconds and stops the touchpad might be at fault. This is not common. Generally speaking, if the microwave display is working and some of the buttons respond correctly but some don't, the problem is with the touchpad

Oct 19, 2014 | LG Microwave Ovens

1 Answer

My nns262 microwave runs exactly 5 seconds then shuts off everything else is working


Possible that the protector works, there is a thermal switch which is located to prevent fire and if there is a malfunctioning of the waveguide, magnetron or the circuit it can cut off the circuit.
click this link for part location. : microwave

Feb 11, 2013 | Panasonic Microwave Ovens

1 Answer

My panasonic genius microwave runs for two seconds, then shuts down. it does this consistantly, and in all modes


It does sound like the magnetron, or the keypad control board or inverter. This will require a professional to make the deternination, equipment will be needed to narrow down the problem and cost should be considered.

Apr 02, 2012 | Microwave Ovens

1 Answer

Runs down to 1 min. then runs forever .I have to shut it off manualy


Possible that the main program controller unit is not shutting down due to the relay being latched ON even after the time is finished.
You need to check if the processor cuts off the relay and still if the relay holds down, If so the relay drive transistor or the relay is faulty.
Also it can be fault of the program processor/timer as it fails to cut off the relay drive. If so check the circuit, wash the board if you find insects secretion. Also try to solder the processor and associated circuits and try again before the board is confirmed as a suspect.
take estimate and decide.

Jul 12, 2011 | Microwave Ovens

1 Answer

Microwave runs about 3 to 4 minutes and shuts off like no power to unit but the breaker is not tripped and not hot, then the unit comes back on after about 15 minutes. ???


It sounds like the magnetron is not working properly and the temperature sensor is expecting temperature rise, it is not getting any and shuts down.
Hope that expalins it for you.

Dec 31, 2010 | GE JVM1441 Microwave Oven

1 Answer

Runs for about 20 seconds then shuts off


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.

Jan 25, 2010 | Panasonic NN-H664 Microwave Oven

1 Answer

Microwave does not heat.


HI, this is an inverter board issue. the magnetron would not shut down the unit. if the magnetron was the issue, it would continue to run but, it would not heat.

replace the inverter asap.

Jun 17, 2009 | Panasonic Microwave Ovens

1 Answer

Microwave runs for about 20 seconds then shuts off.


My mother had the same problem and she was going to trash it. Me being an extreme environmentalist, dint wanna let it go to the scrapyard. Got it down to Mumbai India checked with the engineers down here and rectified it. Problem was with the Magnatron. You would need to replace it. Well this one's getting repaired and off to a institution in need like the Home for the Aged rather than some scrapyard.

Apr 18, 2009 | Panasonic NN-SN657S Microwave Oven

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