Most TCL TV's did not require a password to reset factory defaults. They do however have a parental control password, the factory default for this is 0000. Also the code 0812 could override any password customized by the end user. Sort of a super user password.
These work on a large number of TCL models, however they may not work on yours as I am not familiar with the exact model.
SOURCE: How to Restore Factory Settings N99i
Shortcuts for phone settings
Change languge: *#0044# + dial for English
Check Version: *#8375#
Firmware verion: *#8882#
Test:*#87#
Debug:*#8899# (?)
IMEI number:*#06#
Restore factory setting:*#66*#
Factory settings:*#3646633#
auto test:*#87#
Password for restore factory settings: 1122
SOURCE: Nokia 6300 Restore factory setting
Go to Setting. There you will find the restore factory setting option. Click on it, Give security code (default 12345). Than phone will restart. Thats all.
SOURCE: cant restore factory settings of my cellphone..i
sir if you forgot the password or don't know the security code, You have to master reset the phone. Contact your service provider to get a master reset code at free of cost....You can also visit http://www.unlock-zone.com/ and can see different options there to get unlock code for a price. Choose any price appropriate for you.................
SOURCE: Cosmo Communications DVD Model WPDVD-296 Password.
If you push the eject button so the little lcd screen says open then type in 5168 with your remote. This will take you to a special menu if you go down to ratings then hit enter you can choose the rating you want. You can also set up the password. Default password is 0000. Then hit setup to finish.
SOURCE: Zen Z77 asks for Password
Zen's reset Password is among 0000, 1122 and 1234. Try them. Usually 1122 works in most cases!
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Try 1234 because it worked for me
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