question

launacorp avatar image
launacorp asked

MPPT 75/15 shows no output current after short on the output

Hi,


after repositioning my MPPT 75/15 and some Hardware after it, I shortened the output of the MPPT. The fuse has blown.


After I removed the short and reinstalling a new fuse, the MPPT doesn't show any output current. The load output is actually on and the devices on the load output are on.


Okay, I think the MPPT is defect now. Couse of my f****** foult I can't use the guarantee. Is there any circuit diagram availible, so that I can fix it my self?



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1 Answer
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

There is no circuit diagram available.
As I can see the MPPT is fully sealed with epoxy so I don't think can get it apart without destroying it.

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launacorp avatar image launacorp commented ·

I made some thoughts about it. Epoxy would not be the problem for me.

I first think, that the Shunt has been blown but then I won´t have any output couse of an open circuit. I think the analog to digital converter on the µC is blown. Replacing the µC would´t be the problem for me. Those are most standardized and I have the experience to do that. The actually problem would be the software that I have to flash on on couse I don´t have it and it isn`t listed on the Homepage.

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Guy Stewart (Victron Community Manager) avatar image Guy Stewart (Victron Community Manager) ♦♦ launacorp commented ·

Please talk to your supplier first before attempting to open it up.

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