Mitsubishi 3515R , LOST LOCK CODE. My son had entered a lock code that he cannot remember, the

Question

My son had entered a lock code that he cannot remember, the manual instructed me to enter "QV" and 9, and it works, but I have to do it every time I turn on the TV. Is there a way to overide his code permantly so I can use my cable box univ. remote alone and not having to find my fact. remote each and every time?

frustrated and respectfuly submitted,

Stevejvc av38120 36"tv. do not know code to parental lock and the lock is on. I have no idea how to over ride it.