Strange behevior on a MMM

[molak]

Hi everybody

I´m from Argentina, I bought a used e-revo from ebay from a US seller.

I got it today, everything was OK ..

I got a set of lipos from my other e-revo (venon 3s 5000 mAh) plugged the first one, when i was about to plug the second one, i noticed a big current draw with a big spark and some instantaneos heat on wires... Checked everything was connected right.

At that point I decided to test the MMM with my castle link before trying again with lipos ...The mmm connects and seem fine with castle link.

Since the MMM had a series adapter I decide to remove it and give it a try with a single lipo. Disconected the motor wires and plugged a single 3s lipo.. I got the ring tones WITH NO MOTOR CONECTED! and the wires get hot ...

What should i do ?