I know liftwe01 can answer for his self, but the "electrical distribution board" that I think Lifter01 is discussing is in the tractor section, near the motors, on the operator's right hand side when facing 'forward' (away from the forks,) or on the left when looking straight at the front of the machine, and has rows of wires that plug into it all around the outside of the board. the board is about 8"x13".
Daviga, when you say you "cleaned all the contacts on 'traction control card' " are you referring to the ev100 logics control card? Since that card is mounted somewhat behind the distribution card, you should have most likely pulled loose and re-plugged all those connections.
I Know that this may seems 'off the wall" but what is the state of this battery. I have seen failing batteries cause the seemingly intermittent brake module failure as they -start- to drop/loose voltage, even though it is not enough of a voltage drop to cause the lift cut out to cut off hydraulic lift power (it may be that someone had over adjusted the lift cutout to allow too much operation with a poor battery).
I am a big believer in always starting trouble-shooting with a known good power source.