206 power cut hands drop to zero

hello friends 2005 model 1,4 hdi 206 I have my vehicle on the way while driving on the road, the expressions go up and down tape turns off, the instrument panel lamps go off a little later, they do it from time to time.

my teacher is doing chassis somewhere. have it checked.

Have the dynamon's conjector checked one of the biggest factors causing this malfunction.