Question about Neff Microwave Ovens

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Microwave does not work at all

H7870W1GB multifunctional Power in ok. Opened up oven (carefully) to check fuse. Cannot find fuse. Spares suppliers sell fuses for this model but mine does not appear to have one within the case.

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  • Neff Master
  • 17,129 Answers

Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if the switch contact are not good then it will not trigger the processor to switch on the waveguides. If the lights or fan work without any display or action of program being triggered to start then it can be a possible fault on the main board or the processor. Sometimes insect secretion can short the board and display panel and so the processor can work in such an erratic manner. If so clean, solder and reset the board. Now identify the parts by clicking this link: http://www.espares.co.uk/advice/microwave/a/5/141/identifying-microwave-parts.html

If there is no heating please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron. Check this link to know how a microwave works:

http://www.espares.co.uk/advice/microwave/a/5/1443/how-a-microwave-oven-works.html

So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off. Check the wave guide covers, if food had deposited
then it must be checked or replaced. See link:
http://www.espares.co.uk/advice/microwave/a/5/1146/how-to-replace-a-microwave-guide-cover.html

Now keeping clear of the microwave, switch on; use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type.
If there is heating without any issues, you can use the microwave safely

Posted on Jan 12, 2013

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6 Suggested Answers

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Posted on Jan 02, 2017

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jsrock516
  • 5911 Answers

SOURCE: whirlpool microwave model # MH6150XLQ

Yes, there is. If you go to searspartsdirect.com and type in your model number, you will find the fuse listed under the "Interior Parts" heading as item number 14 (part #815174). You can find appliance fuses much cheaper at the local hardware store. Just make sure it is the correct type and rating (refer to the fuse in the appliance for the information - these are usually a 120V 20A fuse). The reason I mention this site is because they provide excellent part drawings and provide part numbers. There should also be a wiring diagram located behind the control panel to assist you in troubleshooting. Please go to my profile and use the "Ask Me" feature if you require further assistance. I hope this helps you.

Posted on Jun 16, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: spares for brother microwave oven

I would suggest that you contact Martin Microwave.

What I would do is call or fax them the details and then call to follow up.

E-mail is easier, but sadly, some companies just ignore e-mail. A piece of paper (fax) or a phone call is a little hard to ignore.

But you may have to stress that you're looking for a "suitable" replacement, not necessarily an exact match.

Good luck!

Posted on Nov 16, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Microwave Not Working

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:
http://www.gallawa.com/microtech/cap_test.html
http://www.gallawa.com/microtech/xformer.html

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Nov 27, 2008

  • 3 Answers

SOURCE: Microwave oven blowing 20 amp ceramic fuse

Chances are if the varistor fails, it fails drastically causing a short circuit across the supply. It will sit across the supply (it will look like a thick ceramic capacitor) and you can check for continuity after isolating that at one end. If it shows low resistance (it should show almost open circuit with a Digital meter), replace it.

It need not be the culprit. If you are familiar working with High voltage circuits ( they are lethal inside a microwave ovens as the current capability is high here), you can discharge the doubler capacitor and isolate the high voltage diode to check for shorts in the HT area.

Posted on Mar 18, 2009

  • 458 Answers

SOURCE: Microwave doesnt power up

If there is no power at all then it could be the internal power fuse has blown, there could also be other parts faulty also. I would not recommend you to check this if you are not electricallly qualified as a microwave is a very dangerous piece of equipment to tamper with, even if there is no power to it. It would be best to call a service engineer to check it over for you.

Posted on Sep 23, 2009

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