There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.
SOURCE: Wharfedale 74cm Pure Flat TV, Tube needed
Constantly leaving it on, turning the brightness way up, not enough air circulation to remove excess heat; these are all reasons why a tube can just be fried nice and fast.
SOURCE: Childlock on and i dont
You may not be able to remove the child lock without the remote. (as that is the whole point of it..lol) your best bet is probably to pick up a cheap "one for all" remote and see if that will remove it.
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