Beware that it's too easy to bypass. On every model I was able to google up a reset.
Dead end according to the web.
I own a 65 inch Mitsubishi television with a lock by time feature. I set the hours the tv can be watched and the only way the tv can be turned on is with a lock code. Mitsubishi no longer makes tvs and this is a great feature for those with kids/teens.
I am looking for a manufacturer with this feature on a 32 inch or smaller tv. Anyone know of one?

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