a few months ago I replaced the 1.5V batteries by a single 9V battery.
it was working fine until the battery apparently ran out of charge and I replaced it.
apparently because the problem that I imagined was due to low charge continued with the new battery.
basically, I turn it on,press the trigger and the motor turn half way, then when I turn off it finishes the movement.
also, after a short while, the battery overheat.
here is a video of it.
brand new battery.
I searched everywhere and still didn't found what's the problem.
thank you in advance for any suggestions.
Edited by julio campos, 22 July 2014 - 11:20 AM.