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Cracked component on my mdds30

PostPosted: Mon Apr 15, 2024 12:25 am
by disruptit`
My motor controller started acting weird and the left motor would come on without input. So I took my remote control lawn mower apart, and examined the mdds30 rev 1.3, and on the back of the board between the capacitors is a electronic component that is cracked. I think it is a diode, looking to confirm that, it says 2318 then below that GFK or 6FK and there are 2 lines on the side towards the battery terminals, I'm guessing to indicate polarity.

Anyway, wanting to know if anyone can tell me what to replace it with, I've looked up 2318 GFK diode and didn't find anything. It looks like an easy fix if I can find the part to buy.


Re: Cracked component on my mdds30

PostPosted: Tue Apr 16, 2024 3:01 am
by disruptit`
Nevermind, I think it must have been malfunctioning for a different reason. I cooked the board in the oven, and it's working normal again. LOL. No idea, maybe moisture, maybe bad solder connection. Don't know. Used it for a couple hours now and no problem.

Re: Cracked component on my mdds30

PostPosted: Mon Apr 22, 2024 6:38 pm
by waiweng83
The diode is the SM15T56A TVS diode for overvoltage surge protection. Without the diode, the motor driver still can function properly. But I believe there is some surge incident that happened before which damaged the diode. If possible, please replace the diode.