Question about Neff B7740N0GB Microwave Oven

Open Question

Fuse blown i left metal in, i thnk the fuse has blown

Posted by Anonymous on


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

The fuse always blowning, i do not know what is

There is a short inside the microwave. Must be repaired or replaced!
Make sure there is no metal inside it!!!

Sep 04, 2013 | DeLonghi MW 535 Microwave Oven

1 Answer

The fuse inside was blown and on opening found the blown fuse broken. replaced it and it is working. however the blown fuse was smaller in size while we replaced with a bigger size. does it matter???

you must replace the FUSE with the same capacity for example: you will see in the metal fuse the incription 240vac-15amp see if the fuse is Ceramic or Glass, you CAN not use 125vac,10amp or 20amp, the circuit WILL not protect the electronic system, and will dammed another section. Please rectify this INMEDIATELY.
God bless you

Jul 31, 2012 | Microwave Ovens

1 Answer

Fuse blown where is it located

To get to the fuse, you're gonna have to take off the vent grill. there are 2 screws on top. the fuse is located behind the metal plate on the right hand side from where you removed the. Remove the screw for the control panel thats also holding the metal plate. Remove metal plate and look inside the opening,

Feb 16, 2011 | GE Advantium 120 Convection/Microwave Oven

1 Answer

Not heating. where is fuse?

Remove the outer cover. If the fuse is blown, there is usually a reason--a shorted high voltage diode and/or a shorted 'stirrer' bearing, which is a fan-like device near the area where the microwaves enter the cooking cavity and under the sheet-metal waveguide from the magnetron. Replacing just the fuse usually results in another blown fuse.

Oct 11, 2009 | Samsung MW4250W Microwave Oven

1 Answer

No power-inadvertently left on empty GE je1160wmc

Hi. the inverter in your unit has failed. have it replaced asap. It is possible that the In-line fuse has blown as well. you can access this fuse by removing the cover. the fuse is locate din the inverter sector, in line with the power cord. If this fuse is not blown, replace the inverter assembly.

Aug 27, 2009 | GE Microwave Ovens

1 Answer

Microwave shorted out when metal grease filter contacted inside

It might be that the internal power fuse of the MW may have blown. You may have to just replace that fuse if possible. Other wise the electronics (most likely a circuit board) may have been blown.

Jun 29, 2009 | Frigidaire 1.6 Cu. Ft. Over-the-Range...

1 Answer

Microwave does not heat

un plug remove cover find red lead to magnetron with thick long plastic round blob this contains a long glass metal ended fuse that has probably blown due to running when empty long fuse is necessary to stop hi voltage flashing over airgap when fuse blows when fuse blown no output from magnetron as hi volts missing steve t

Dec 03, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer


open by unscrewing screws on back and along left side bottom. this lets you swing up the cabinet showing the electrics. the red power line going to the timer is held in place by a metal wire holder that is riveted to the base. wire has a white sleeve between its insulation and the metal wire holder. slide wire and sleeve out to the side of the holder. slide sleeve to side along wire, revealing fuse. need a solder iron and an electronic parts store to get replacement fuse and solder it in. reassemble.

the fuse is a resistor that blows when unit is getting hot. use lower resistance fuse or just hardwire the power line straight through, no fuse, but watch for overheating (not likely) and maybe use breaker outlet

Oct 15, 2008 | Microwave Ovens

1 Answer

No power

Simply use Safety. Unplug. Use Continuity Buzzer, Meter ( With Continuity Tone ). Can Use Meter if You Have & Watch, Check By AC Power Cord Fuse. Use a 500 Ohm to 5000 ohm Resistor on two Insulated clip leads with screwdrivers and Find the Hi-Voltage Capacitor ( Large Metal with Leads and a Diode on it. Short the Condenser from one side to another to BLEED any Voltage left Charged in the Condenser. Newer Microwaves have a Bleeder Resistor 10 MegOhms Built in. But Just do this for Backup/Sure Safety. Will Probally Just find a Blown 15-20 amp fuse ( Electrical Surge ). Any one of the 3 Door switches that DONT open-Close Smoothly Will Blow Fuse. ( Intermittent, Burnt, Skipping, Hanging up ). A Shorted Hi-Voltage Capacitor or Diode Will Blow Fuse. Open in Series Protection device may have opened because of Overload or Surge. These are Metal and loop in-Out AC Line and are Mounted ( Heat Sinked to Metal case ).

Aug 15, 2008 | Microwave Ovens

3 Answers

Possible fuse -- no power

Replacing a fuse Locate your fuse. Most microwave fuses look like the one pictured to the left. They are usually an inch or two long. Each end is metallic and the center is either ceramic or glass.
To get to the fuse, remove the outer cabinet of the unit, which is usually held in place with a few screws. Once the outer cabinet is removed, follow the power cord into the unit. It will take you to the fuse holder, where the fuse sits. The fuse holder is located two or three inches into the unit, and may be attached to a power board.
Decide if your fuse is blown. A blown glass fuse will produce flash burn marks on nearby surfaces, or it will be completely black on the inside. The internal fuse wire (filament) will be melted and blackened. Ceramic fuses give no outward signs of having blown. To determine if a ceramic fuse is blown, test it with an ohmmeter. If the ohmmeter reads zero ohms, your fuse is fine. A reading of infinite ohms means your fuse is blown.
Replace the blown fuse. Pop it out of its holder and snap in a new one. You can squeeze the fuse clips together with your fingers in order to tighten their grip. Replace the unit's outer cabinet, plug it back in, and test to see if it is running properly. DO NOT run the microwave with nothing in it.
NOTE: Fuses do not usually blow on their own. A fuse may blow because of problems with the interlock switches or with high voltage circuitry. It is also possible, though rare, that a power surge will cause a fuse to blow.

Jun 05, 2008 | Amana RCS 10D 1000 Watts Microwave Oven

Not finding what you are looking for?
Neff B7740N0GB Microwave Oven Logo

Related Topics:

18 people viewed this question

Ask a Question

Usually answered in minutes!

Top Neff Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9047 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers


Level 2 Expert

225 Answers

Are you a Neff Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides