Question about Neff H7871 Convection/Microwave Oven

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Neff h7871 my neff microwave dosen't work glass fuse blown inside on microwave side.replaced fuse oven/grill will work but soon as switched on microwave blows fuse and high voltage transformer connection burnt off can you help

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  • deewaters Aug 07, 2008

    Hi

    I have similar problem on Neff H7870 Microwave....the 10A fuse blows as soon as I start a cook program.

    Testing the HV Transformer (Primary & Secondary), the Magnotron and the HV Capacitor ring out as all ok but the Diodes both showed Open.

    So I bought new diodes but to no avail, the fuse still blows.

    Any suggestions gratefully received.

    Dave

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1 Answer

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  • Neff Master
  • 8,864 Answers

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.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.microtechfactoryservice.com/cap_test.html
http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html


We\'re happy to help and we appreciate your thoughtful rating of our answer.

Posted on Jul 06, 2008

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1 Answer

How to replace inner glass panel on Neff H7871 microwave


Hi Bill, I am having a same problem I have managed to order the glass from:-

http://www.4neff.co.uk/cgi-bin/product.pl?PID=876912&query=Neff%20H7871N1GB%2f01&model=H7871N1GB&path=127858

1. Open the door.

2. Take out the 2 screws just behind the handle, on the inside of the door, the door should flop down at the handle end.

3. Hold the door handle and pull the door out. It is only housed in by a slip in hooks at the bottom end.

4. Once you remove the door you will see the inner metal mesh and the inner door behind it.

5. Remove the 16 screws holding the inner glass with a special star type screw driver bit no T30.

6. Once you done that the glass housing holding the inner glass can be carefully prised free and taken off the inner door assembley.

7. Once you done that remove and inner glass, and be carefull to leave the glass glass seal intact, clean around the frame housing and the seal then replace the new inner glass and reverse the process.

PS. Becareful of the inner door once you've removed the outer door, as the hinges holding the inner door tend to shut quickly as there is less weight on the hinges.

It will do the job if you follow these instructions.Good Luck. AL

Oct 10, 2011 | Neff H7871 Convection/Microwave Oven

1 Answer

Neff H7871 oven door does not stay closed. Catches do not appear to be working


The door latch is either cracked or broken.The door when gets closed the door latches clicks.But if the door latch is loose or cracked it will not click and door will not close.The door needs to be disassembled and the door latch has to be replaced, if the latch is cracked.Also to check the latch from inside the door needs to be removed.-------- This will help.thanks.Helpmech.

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1 Answer

Microwave blows fuse in microwave mode grill function ok


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.

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Replace light bulb on the Neff H7871 combined oven and microwave.


The bulb is positioned at the top of the oven, accessible only from the outside. You'll need to pull off the top and bottom trim strips, remove the bottom trim strip locators, remove 2 fixing screws from the left edge of the oven (with door open), and the 2 fixing screws from behind the top trim strip. The oven should then just slide out. You only need to pull it out 6 inches or so to gain access to the bulb cover. You'll need a T20 driver to remove the cover, then the bulb unscrews as it has an SES fitting. Bob

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1 Answer

Neff microwave oven not heating


HI. in most cases, this will lead to a failed Heating device(magnetron tube).It would be wise to check the Magnetron cutoff fuse to be sure of its integrity. if the fuse is blown, simply replace it. if the fuse continues to show continuity, replace the magnetron.

(((The fuse is located inside the unit along side the magnetron)))

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1 Answer

Neff microwave h7871 arcing


This antenna is called the stirrer here in the US. Its purpose is to stir the microwaves to ensure even cooking.

The cover is usually made of plastic, as opposed to ceramic, and it keeps grease and food particles off the stirrer to protect it from arcing, which can damage the surfaces and the magnetron.

The stirrer, stirrer cover and the area around it should be cleaned with a mild, non-ammonia cleaner.

If the cavity metal of the oven is chipped or charred, it will have to be sanded smooth and clean and dried thoroughly.

Then you can apply some high-temperature appliance paint, available in appliance parts stores and hardware stores.

Also, the stirrer will arc if it is not turning when the oven is cooking. That may mean a bad stirrer motor.

If your waveguide cover is burned, it will need to be replaced. It provides important protection for the magnetron and stirrer.

You can download Neff manuals here.

Even if you don't find your exact model, they should all have contact info for Neff in case you need to call them to get spares / parts.

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

Dec 13, 2008 | Neff H7871 Convection/Microwave Oven

3 Answers

Neff H7871 inner glass broken


Hi, I am having a same problem I have managed to order theglass from:-

http://www.4neff.co.uk/cgi-bin/product.pl?PID=876912&query=Neff%20H7871N1GB%2f01&model=H7871N1GB&path=127858

1. Open the door.

2. Take out the 2 screws just behind the handle, on the inside of the door, thedoor should flop down at the handle end.

3. Hold the door handle and pull the door out. It is only housed in by a slipin hooks at the bottom end.

4. Once you remove the door you will see the inner metal mesh and the inner doorbehind it.

5. Remove the 16 screws holding the inner glass with a special star type screwdriver bit no T30.

6. Once you done that the glass housing holding the inner glass can becarefully prised free and taken off the inner door assembly.

7. Once you done that remove and inner glass, and be careful to leave the glassseal intact, clean around the frame housing and the seal then replace the newinner glass and reverse the process.

PS. Be careful of the inner door once you've removed the outer door, asthe hinges holding the inner door tend to shut quickly as there is less weighton the hinges.

It will do the job if you follow these instructions. AL (srahbah@hotmail.com)

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1 Answer

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