Question about Neff B7740N0GB Microwave Oven

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Noisy Fan in Neff Combi Microwave/Oven. B6774.0gb

I have a neff Combi Microwave/Oven. B6774.0gb When I start either the Microwave or the Oven, there is a noise that sounds like a fan clattering. It is not the Fan at the back of the oven, as the noise occures even when this is not turning. Any solution, and can I fix it myself?

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  • Anonymous Mar 29, 2008

    removed glaas cover on the oven ceiling ; fan type blade dropped down but not off, could raise the blade but it would not stop in plce,

  • Anonymous Jul 22, 2008

    Yes, I have the nef B6774SOGB and I have the unbearable clattering noise on microwave mode and oven. I too have removed the glass on the ceiling and the blade does drop down, I have pushed it up a fraction but as said by other user, it wont stay in place.....has anybody tried to use the oven without the glass on??

    I need to sort this out immediately as I cannot bear being in the same room as it and am reduced to salads for evening meals!!!

  • ariel3112 Oct 19, 2008

    Yeep, exactly the same issue.

  • Anonymous Dec 15, 2008

    Exactly the same problem no solution - anyone spoken to Neff about this - I may try

  • Twickers Dec 28, 2008


    I have the same problem did anyone work out a olution?


  • Anonymous Jan 02, 2009

    Same problem - why hasn't NEFF resolved it ? Have sent them another e-mail today.
    SeaBee, Devon

  • Anonymous Jan 02, 2009

    Same problem - why hasn't NEFF resolved it ? Have sent them another e-mail today.
    SeaBee, Devon

    Noisy Fan in Neff Combi Microwave/Oven B6774.0gb

  • Anonymous Jan 05, 2009

    Mine has just started with the same problem - any suggestions?

  • omap Jan 05, 2009

    how old is the oven

  • JonTravers Jan 06, 2009

    We have exactly the same problem with a B6784 (same oven with grill), purchased in 2006. This is the third time it has developed the same symptoms - the first two times Neff were called out and the fan was replaced under warranty. This time they are refusing to send anyone out (unless we pay £70 callout + parts & labour) because it's longer than a year since it was repaired last.

    The issue is with the high speed cooling fan (located above the microwave stiring blades in the top of the oven). Given the number of posts here and the recurrance of the problem I'd say this is probably a design fault with the oven which Neff should be sorting out (they are still selling these ovens). I will talk to them again tomorrow, and would suggest anyone with the same problem do the same.

  • Anonymous Jan 07, 2009

    My oven was purchased in Nov 2005, so I am guessing that Neff will insist on charging me for attempted repairs. However, as this clearly seems to be a design fault, I am thinking that a new oven may be less expensive in the long run. I will call Neff tomorrow and see where I get to! Maybe we should contact Watchdog!!

  • Anonymous Jan 13, 2009

    Hi all

    Thought that you would like to know that even though I have to pay the service fee (my oven is out of warranty), Neff are giving me 50% of the cost of the parts. Better than nothing.

  • squirrels20 Feb 24, 2009

    We have the same oven, 18 months old, still under warranty, it too was noisey. It has failed twice and been repaired. First it was a fuse, this time it was again the fuse but the technician said it was also the control unit/inverter, which he replaced. It is fine again now for the moment. Such an expensive item is proving to be unreliable. I am writing to NEFF and asking for a replacement or at least a free extended warranty?



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Yes you can fix it yourself it is a cooling fan in the top it is round metal fan quite small venting waste fumes from cavity when grilling etc need to remove top panel and 3 screws to remove it is a push in fit.

Posted on Oct 28, 2009

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We had this problem - fixed today - its the chimney fan which extracts fumes and sends them to the cooling fan. Its an easy fix when you see the engineer replace the fan. Neff were excellent my warranty ran out 6 weeks ago and they replaced the part for free and all I paid was a call out charge. The rattling was caused by the blades coming loose from the fan

Posted on Dec 10, 2009


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