Common reasons a Kenwood food processor won't power on?

Thomas Martinez

Thomas Martinez

Member
May 5, 2026
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Why the Kenwood processors will not turn on at all. From what ive read it is usually because the bowl is not fully locked into the machine. There is a safety interlock switch on these that will not allow the motor to start unless the bowl is in the correct position. The other issues ive seen is wire connection inside the base of the machine. It could be the on off switch, it could be a bad diode on the control side of the machine. The safety lock switch on these could also break. A faulty motor is also on the list of potential issues although this is usually if all else are ruled out. Finally, the fuse in the plug could be blown. This will turn off the machine completely though so people tend to not think of this.


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The interlock switch every time in my experience. Ive done maybe 6 or 7 of these and only once was it the main switch. Its the little plastic tab that hit the microswitch that wears down or snaps off which prevents the machine from locking.
 
Fuse in the plug. Always check this first. I have to go in and do this every time and the fuse is blown. People just do not think of this when they have to replace the machine.
 
wait is the interlock just a regular microswitch or is it something kenwood specific? Could you just replace this with a generic one from like an old washing machine door or something?
 
Dull Dragonfly said:
wait is the interlock just a regular microswitch or is it something kenwood specific? Could you just replace this with a generic one from like an old washing machine door or something?
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Usually a standard microswitch yes. I have done a few with omron switches and just replaced these with a generic one off ebay.
 
Anyone who has had to repair a food processor themselves instead of just buying a new one for 2024 has my respect. Most would just chuck the machine in the bin.
 
Planet of the said:
Usually a standard microswitch yes. I have done a few with omron switches and just replaced these with a generic one off ebay.
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Interesting. So its specifically the lever style of the switch then? Does it have to be the exact same throw distance to be use in this machine or else will it be dangerous to use one that might not fully actuate with the bowl?
 
Bad diode on the control side of the machines are very common on the older fp models. Ive done this 3 times this year alone. People always complain about the interlock switch when its not the issue.
 
My chef major did this last month. It is a very common issue when people assume it is the interlock switch. It ended up being a loose spade connector on the switch. Tensioning this a bit and the machine was good for 6 weeks now.
 
Fine Flamingo said:
Bad diode on the control side of the machines are very common on the older fp models. Ive done this 3 times this year alone. People always complain about the interlock switch when its not the issue.
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Yeah but if its a bad diode this will happen again in a few weeks when you did not fix the root of the issue.
 
It seems to me that the quality of the Kenwood machines have taken a dive since the chinese factories took over the company. My moms machine from 1988 runs perfect. The newer models are plasticky garbage and die in 3 years.
 
Courageous Cat said:
Yeah but if its a bad diode this will happen again in a few weeks when you did not fix the root of the issue.
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Sure it sometimes is. However, ive seen several instances where its just a tired component after 10 years of being used in the kitchen. Sometimes things just fail of old age and not because of any external factor.
 
My friend tried to fix it himself snapped one of the plastic clips that holds the base of the machine together. Its working now but it rattles like a maraca.
 
Escape from the Scooter J said:
Got a question for the experienced lot here. When you test the interlock switch do you test it with a multimeter or do you power it up and test the motor?
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The continuity test will do it out of circuit. To bench test the machine clamp the meter to the supply to the machine and tape the interlock closed while the bowl is off. Do not ever run these machines with blades fitted.
 
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