Do you want to lock a particular channel and external input?
Do you want to lock a particular channel, external input, or APP of Smart TV?
You can lock a particular channel or external input through Lock feature and if you enter password in a locked channel, it will be unlocked temporarily.
※ For Smart TVs after 2013, you can lock or unlock a particular APP.
How to fix
<How to set – Models before ‘11>
① Menu → LOCK → Lock System : On
※ Initial password: 0000
② Block Channel : Locking channels among the ones receiving through antenna
③ Input Block : External input, Component, HDMI lock
<How to set for Smart TV Netcast ‘12~15>
[Home] or [Smart] of remote control → [SETTINGS] → [LOCK] → [Lock System]
① Turn on the lock system to lock.
② Enter the password. ※Initial password: 0000
③ Block Channel: Select the channel and click lock/unlock at the bottom right corner.
④ Input Block: Turn on the input mode that you want to lock and set lock on.
⑤ Application Lock: Select APP to lock.
※ Only Smart TVs after 2013 have Application Lock feature.