TV Repair Questions? Ask a TV Technician
Sounds like you locked out the input with a password XXXXX let me see if I can find you a master reset code.
I don't see a "master reset" password, but you might be able to just install a NEW password XXXXX you can RESET your parental codes and unlock that input.
Try that first, and let me know if you cannot unlock it or change the password, ok?