Hitachi 50SBX78 50 in. Rear Projection Television "reset child lock tv without" Questions

...the child lock on my TV I accidentally activated the child lock on my Matsui MAT32LW507. This is a demo model and I bought it without a remote. Hi ,Resetting your tv will most likely solve that

...CHILD LOCKED, using a one4all universal, menu functions okay, PIP will show momentarily while demonstration is ongoing,tried just about everything I could without any service manual or any ...

...child lock without the remote 2. do we need a remote if so what and where can i buy a replacment from. if you can help this would be great, cheers. Brett You don't need the remote to unlock the TV. ...