Health Minister Andy Kerr says he has seen evidence that embattled Western Isles Health Board chiefs have changed.
Andy Kerr initially found himself locked out of the board's office
The minister arrived in Stornoway on Tuesday night to find the board's offices locked.
After eventually getting inside, he reiterated his warning that the board must regain the public's confidence.
The board, which was directing media calls about the meeting to the Scottish Executive, has been accused of mismanagement in the past.
Mr Kerr said the delivery of health care in the isles was not an issue, but the conduct of board members was.
After the meeting, he said: "I expressed a view they have an opportunity, a chance, and they said they would avail themselves of an opportunity to move on as a board and conduct themselves appropriately.
"We now need to give this board space to prove themselves."
The minister flew to Stornoway after visiting Inverness to attend NHS Highland's annual review.
Before leaving the city he said he would not tolerate any more "nonsense" or "unacceptable behaviour" from the isles board.
Last week, Mr Kerr appointed Ronnie Cleland, a non-executive board member of NHS Greater Glasgow and Clyde, as interim chairman following the resignation of David Currie.
A support team put together by the minister and the executive has also been appointed to help the board through its period of change.