Sansui SV21276M. child lock on

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Get owners manual and read how to disable child lock

Zenith TV unlock [Child lock]
Tune the television to a channel blocked by a child lock. The words "Enter Lock Code" will appear on the screen with four dashes underneath
Press the numbers on the remote control to enter the child lock pass code to unlock your Zenith television. When the code is entered correctly, the blocked channel becomes visible. The words "Enter Lock Code" remain on the screen if the password is not correct

Enter "0000" if you did not change the password on the television prior to enabling the child lock feature. This number is the default pass code for the child lock.
Push "7777" if you changed the pass code for the television but no longer remember the code. This number allows you to bypass the child lock and watch the programming.
Key lock
Press the "Menu" button on the remote control to access the "Main Menu" screen on the television.
Scroll to "Special" using the up or down arrow buttons and press the right arrow button to access the "Special" sub-menu.
Push the up or down arrow button to highlight "Key Lock" and then press the right arrow button.
Press the up or down arrow button to change "Key Lock" to "No" and then press the "Menu" button to save the setting.
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Hi

Did you mean child lock? if childlock you need a remote control to open this tv..

Thanks!

the tv has been locked. use the user manual to tell you how to unlock. using the remote control.there is no problem inside your tv. it may have been locked because of a young child not to go into channels its a child lock

you can try it by pressing the power button and the tv/av  button at the same time, that worked for me ,My tv is about 8 years old

DVD players don't need parental locks. When a user places a DVD player in Parental Lock mode, they usually create a 4-digit access code to remove the lock. Without the manual, I can't tell you how to reset to factory settings...what you need is either the access code or to reset it.

If it came direct from the factory with a parental lock already on, try the code "0000". If you need more digits, just use 0 until all of the slots are filled. If 0 does not work, try all 1s or 9s.

this problem need a technical assistance from any professional to service your unit to reset and by pass the codes..

hi
how to open child lock for this sansui tv

Press and hold the TV/AV button and then press the red on/off button, the TV screen will become black, and any buttons on the main unit or the remote control become inoperative. If you want to switch on the TV, press and hold the TV/AV button and then press the ON/OFF button again, the TV will return to the normal TV reception