Samsung Washing Machine No Power?

hi,

I have a cx that has a Samsung washer can’t remember the model, it just had no display or functions power going into the machine, we brought it back to our workshop and dug around inside couldn’t find anything?!?!, but machine powered up and functioned returned to cx, showed them it working and now it has died again, when we first had it back at the workshop it was also dead

anyone else come across this type of fault

regards
Steve