Section 779. Failure to comply with terms of probation

If a respondent is
  brought before the court for failure to comply with reasonable terms and
  conditions of an order of probation issued under this  article  and  if,
  after  hearing,  the  court  is  satisfied  by  competent proof that the
  respondent without just cause failed  to  comply  with  such  terms  and
  conditions,  the  court may revoke the order of probation and proceed to
  make any order that might have been  made  at  the  time  the  order  of
  probation was entered.