Please could someone help me out, my remote control is not working with my TV although I have changed the battery. It is currently stating on the TV Screen 'Key lock on'. I did not turn it on and I have entered the default code 7777 and even code I had created in the past and it still do not turn of the key lock. I would like to know how to reset my TV remote control or my TV in order to have this key lock turned off. Please could someone help me out. Thank you