The head of the CCRB said Saturday he supports a full repeal of the law that blocks the public from seeing the NYPD personnel files.

“I personally support repeal,” watchdog chairman Fred Davie wrote on his personal Twitter account.

“I’m proposing a public discussion at @CCRB_NYC Nov meeting.”

A spokesman for the Civilian Complaint Review Board told The Post that Davie had planned to air his views at a state Senate hearing last week but, according to a source, was muzzled by Mayor Bill de Blasio, who favors only a partial rollback of the longstanding city law known as 50-a.

It shields the public from seeing internal files on cops, firefighters and corrections officers.

The mayor blasted The Post on Friday for reporting the details of the canceled testimony, claiming it was false and that reporters didn’t reach out to his office for the other side — despite three attempts by The Post for comment.

Davie and NYPD Deputy Commissioner Benjamin Tucker were both set to testify on Thursday before the New York Senate Codes Committee in lower Manhattan.

But de Blasio’s office ordered the two not to show up to avoid publicizing an ongoing disagreement on the issue, a source with knowledge of the planned testimony told The Post.

A CCRB spokesperson said Davie had “some conversations” with the mayor’s office over his planned testimony, but could not confirm who ordered the no-show.

“After several additional consultations just prior to the hearing, the Chair felt that a more formal discussion with his fellow Board members, members of the community, and others was necessary before publicly taking this position on behalf of the agency,” the spokesperson said.

Hizzoner and the NYPD have expressed support for reform of the law but have stopped short of a full repeal.

A spokesperson for the mayor’s office said it had nothing further to say beyond what de Blasio said on the radio Friday.

Additional reporting by Julia Marsh