Did I just kill my MMM v1???

[loa]

Hello,

Another new thread today.

I finished soldering 6mm plugs on my new Zippy 5S battery and on my v1 MMM. I got a decent spark when I plugged the battery in, and now the MMM won't start.

The lipo still reads around 21v (it's freshly charged), but my v1 MMM just won't make a sound...

As I don't have another battery around, how can I verify if my MMM is effectively dead?

Thanks

Loa