Electric stove component

[Krishicall]

Anyone have any idea what this melted component is? No help from the manufacturer. Thanks!

[amyk]

5uF capacitor. I think this is an intact one: https://www.electroncomponents.com/image/cache/data/Capacitor/EC-MKP-X2-5UF-275V-AC-400V-DC-cooker-capacitor-500x500.jpg

Look for "induction cooker capacitor", these wouldn't be sold so prominently if they weren't common failure items...

[tooki]

I truly don’t mean this to be rude, but if you cannot figure out what kind of component that is (resistor, capacitor, inductor, etc), given that both the component and PCB have markings that give it away, you probably shouldn’t be working on mains-powered equipment yet.

If your question is what value the component is, that’s a different matter.

[fzabkar]

Some clues here:

https://fccid.io/ZBNC18-16/Internal-Photos/Internal-Photos-5293067.pdf



Edit:

I think this is the manufacturer:

https://en.cgegd.com/product/14/

[cruff]

Did the capacitor fail due to heating caused by a bad connection at the screw terminal?

[Krishicall]

Not sure, I havent taken it apart yet, but its probably too damaged to tell. I doubt it as the stove never moved and lasted several years.

[fzabkar]

It might help to see photos of the other similar capacitors(s).


Edit:

https://cg-capacitor.en.made-in-china.com/product/bOdtpWIHbJVa/China-Cg-5UF-400V-MKP-X2-for-Induction-Cooker.html
https://image.made-in-china.com/2f0j00morgsViGbtbC/Cg-5UF-400V-MKP-X2-for-Induction-Cooker.webp (photo)

[Gyro]

From the bulging, that capacitor self-healed a lot before it melted. it looks like runaway self-healing rather than direct heat from the terminal to me. Of course an intermittent connection could have caused lots of transients that could have killed it indirectly.

Given the power levels involved, that PCB needs serious rework (no image of the track side) in order to safely handle the high current. Likewise the wire termination.