Top 20 Neff H5642 Convection / Microwave Oven Questions & Answers

You're owner's guide/manual will have the instructions; if you don't have a manual, go to the manufacturer's website to download it or try online manual libraries.

are you sure its not a Neff H5642N0GB why you wanting off? has the bulb gone? you can take the hole top off to get to the bulb, make sue you unplug it...not just switch it off ! i mean unplug it from the wall !

follow the steps and fix it. God bless you

ight Bulb

If the microwave light bulb is not working it is usually located behind the upper grille and behind an access panel, and above the lower panel. On counter top units you will need to remove the outer cover to get to the bulb. If that doesn't solve the problem check the on-off switch, and control board

Main Control Board

If the microwave light bulb is not working check the light bulbs, sockets and wiring. If they are good the main control board might be defective.

Light Bulb Socket

If the microwave light bulb is not working and a new light bulb doesn't solve the problem, the light bulb socket might be burned out and need to be replaced.

any bulb that fits is the right one

I have a neff microwave with no manual where can I get one, H5642SOGB, thanks

No heat is typically failed micro switch's that act as the door safety interlock. Remove the cabinet to find the tiny switches. Test them for proper action. Should show open or short depending on whether the door is open or closed.

The magnetron is probably not working and the main board senses that.
Call an authorised repairer to fix it for you. There are no user serviceable parts in that section of the machine.

It will require a new magnetron and possibly power supply for it. The magnetron will destroy itself if it has nowhere for the energy to go.

If there is heating in the microwave then the drive must be checked. Possible that the motor is faulty or the belt is broken or loose.
you will need to check for all the other functions to confirm on this section. make sure the main control board delivers power supply to the motor.

you will find there is a broken plastic latch this part will need to be replaced you can open the door if you take the top off and manual lift the latch



need more help let me know

It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.

YOUR SAFETY IS PARAMOUNT

This is a job for a professional but if you are safety clued up, here's instruction.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 or moving coil meter on high resistance range for short circuit, (DVM's won't show the fault!), the capacitor can fail and go short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.

magnetron that makes the microwaves or the power module tha supplies it. Definately a job for the serviceman.

if you mean the door hook inside the door this is quite easy you need a flat small bladed screwdriver to split apart the plastic inner part of door from the outer keep working around till you have released all the catches there are several, the inner skin will pull away revealing the hook and a spring the hook just slides out refit new hook with spring and reassemble. easy.

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.

This is happening due to either the magnetron, or the Power Diode, or both, is breaking down, under load, then the unit detects the fault condition, & then, for safety reasons, to avoid a fire or explosion, shuts down the system. You need to take it in to be looked at please obtain a "Quote" before proceeding with any work. This way you can decide to repair or replace.

safety fuse (internal) will have blown usually caused by faulty inverter short circuit if fuse changed and blows again this is what it will be costly repair if out of guarantee.

is the door hook broken it sounds like microwave is reacting as if door is always open.

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Basic Microwave Oven TroubleshootingTips

heatman101,/,

check on rating plate if fd number starts with a 7 or 8 eg fd 7908 then appliance will need mag leads recrimping they oxidise over time and break connection giving syptoms that you describe, its an easy fix but you need to remove outer casing.

ths is probably a failed motor they can go open circuit i have had a few where the fixing screws underneath that hold the motor fall out severing the drive spigot ,check if the spigot turns under the glass turntable if hard to turn will be motor failed cheap easy fix.