one driver must go down :( help (3 replies)

i have this problem with drivers
at first my printer work couple times
and
suddenly one of the drivers gets hot (the extruder driver ) when i connect it and does not work
i get another one and tried again
the same happened to X axis driver i take it out
and put it alone without the other driver
still gets hot
i tried the 3 other driver they work
why this happened when they are 4 ?