Question about Neff H5470 Microwave Oven

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Neff Microwave H5470SOGB

Our microwave starts OK but then turns itself off after approx 20 secs.

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  • Anonymous Dec 15, 2008

    Exact same problem

  • Anonymous Jan 06, 2009

    had this probem 3 times, twice a magnatron change and now the power board capacitor, which entails replacing the entire board. ...... Looking for an alternative nicrowave as i am not spending another penny on fixing it, clearly a reliability / quality issue

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  • 228 Answers

If appliance runs for approx twenty seconds this is nearly always a magnetron fault usually a cracked magnet or burnt out anode the electronics are detecting an unusual power fluctuation and shutting appliance down for safety you will need service tech to sort.

Posted on Aug 05, 2009

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Posted on Jan 02, 2017

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  • 23 Answers

SOURCE: microwave turns itself oo

it sound like the inverter unit is faulty or the magnetron is gone.the only real way to find out which is to change each one in turn,sorry i cant be any more help.if you have any more questions get back in touch,regards les

Posted on Jul 28, 2009

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1 Answer

Neff b6774N0gb/02. Inner glass shattered. replaced. Internal fuse blown. replaced. Now microwave working (heating water) for approx 5 sec, then switching off, beeping and showing E1 fault. Also display...


Usually if this model stops after approx 3 secs it is an invertor or mag fault. Check that the aerial cover is clean Page 3 of the breakdown part position 315. If this is really grubby it would be the cause of the door shattering. The PTC is not used on the microwave function so may be an additional fault. Check also the alignment of the door switches as this can also cause a similar fault. My best guess is if you remove the mag, you'll probably find scorching on it and it (and the invertor) will need replacing.

Mar 25, 2013 | Neff Microwave Ovens

1 Answer

Stops after 2 seconds


Stopping after 2 secs usually means the inverter or magnetron have failed, or worse case scenario both. A microwave can be storing up to 4000 volts even when switched off, so if you're unsure of what you are doing I would suggest that you get an expert to look at it. BSH is the repair section of NEFF 0844 872 8999, the offer a repair plan, where you pay a set amount (Approx 170 pound) which covers your first repair and any further repairs for a year and you can pay by direct debit monthly to spread the cost. The inverter is approx 200 pound and the magnetron is about the same, so it's a pretty good deal as to replace the whole oven is 600-700 pound.

Jan 03, 2013 | Neff Microwave Ovens

1 Answer

After approx a minute a regular squeak begins, occasionally missing a beat.Heating is fine.


If the "frequency" of the squeaking is a low frequency, the I would suspect the turntable motor or stirrer motor (if so equipped).

If it is a higher frequency, I would suspect the cooling fan or hood fan motor.

Dec 11, 2012 | Neff H7871 Convection/Microwave Oven

1 Answer

Micro wave stops working after 30 secs


Replace the door interlockswitches - or try re-positioning the existing set. They wear after time

Jun 08, 2012 | Neff H5470 Microwave Oven

1 Answer

The microwave stops itself everytime at 59 secs if put on for any time over a minute


Change the damper motor and switch. Cost for both approx. $30.00. Must remove cover to gain access to motor & switch.
ZephyrKnight

Feb 17, 2011 | Sharp Microwave Oven Microwave Oven

1 Answer

Microwave starts as normanl but cuts out after 5 seconds on all settings?


sounds as either inverter or magnetron is faulty difficult to diagnose although when mag fault usually runs for about 22 secs inverter fails sooner around 5 secs.

Apr 09, 2010 | Neff H5642 Convection / Microwave Oven

1 Answer

Microwave turns itself oo


it sound like the inverter unit is faulty or the magnetron is gone.the only real way to find out which is to change each one in turn,sorry i cant be any more help.if you have any more questions get back in touch,regards les

Jul 28, 2009 | Neff Microwave Ovens

1 Answer

Neff 5470 used for 20 min then just cut out


Take it back to where you bought it from and get a new one!

May 19, 2009 | Neff H5470NOGB 900 Watts Microwave Oven

1 Answer

Shuts off after 23 seconds....


In most cases when the microwave stops @ 23 seconds it's the Magnetron which has failed, and is shorting to earth.

Either that or the magnetron isn't getting the right signal from the inverter board. It gives it 20 seconds to get the right signal or it shuts itself off.

Apr 04, 2009 | Panasonic Microwave Ovens

1 Answer

NEFF MICROWAVE OVEN BLOWS 10A INTERNAL FUSE


We had the same problem, got Neff service engineer to come out after taking out insurance. He said the megatron cracks which is a large magnet and causes the fuse board to blow and needs to be replaced. This occurs through lack of ventilation on instalation. Total cost £370 may as well get a new one. Plus our insurance wouldn't pay the cost and cancelled the insurance policy.

Mar 24, 2009 | Neff H5470 Microwave Oven

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