I have a universal remote and this is happening...any suggestions. The screen is blue with the red key . I was just watching the TV...something happened. I have a phillips universal remote

You have accedently locked your tV. What is the Brand name to your TV?

Press the "Menu" button on the remote control and use the arrow buttons to scroll down to the "Parental Guide" option, then press the "Enter" button.
Type in the default parental code "6688" if you have not set your own code. If you have set your own code, type it in. If you set your own code and forgot it, override it by using "6688."
Use the arrow keys to switch the parental lock to "OFF." This allows all programs to be viewed no matter the rating. Press the "Exit" button on the remote and start watching all your channels

Press and hold the SET and EIGHT (8) key, then release, the light will blink twice, then off, it is now unlocked.....hope this was helpful...

http://www.dvdhacks.co.uk/dvdhacksforum/forum_posts.asp?TID=2414

I hope this helps.

i have a shinon tv and it is locked what do i have to do please

Does your controller turn the tv on and off?

press and hold menue button on the tv, for more than 10 seconds to unlock

right it may be that your universal remote is not compatible with your tv.

I had the exact problem...tried a number of things that did not work. My dog "ate" my original remote. After reading your solution I took the universal remote that was programmed to work with the tv and tried holding down each button for a few seconds hoping that one would work like the display button on the original remote. It worked. I have a GE universal remote and the menu/info button worked for me. Again, you need to hold it in for a couple of seconds. Thanks for the help and I hope my added solution helps other people. Claudia in Minnesota