Hi, I have an 80cm Centrex Television, model:CTT 8009E. Have no idea what to do. I've tried a lot of different combinations but still nothing. Please can someone help me..My daughter has pressed some buttons thats locked the tv. The screen is all blue with a closed padlock in the top left hand corner of the screen. 
Locked
Sat, 09/08/2007 - 04:58
#1
Locked
Would love to get a response from someone.
Logged On: 3 days 13 hours 47 minutes
On some models:
Simultaneously press & hold the "F" button & MUTE on remote for 5+ seconds till the lock icon disappears.
On others:
Press & hold the "+" button on remote for 4+ seconds till the lock icon disappears.
"+" button located bottom right on remote.
See what's on your remote & try that.You can only disable it with the remote for the tv.
I would like to say thank-you to the FishinTVguy. Thank-you so much, we are able to watch TV again. My tv is an 80cm centrex model:CTT8009E. My daughter had pressed some buttons which caused it to lock. The tv did nothing but show a full blue screen with a red locked padlock in the top left hand corner of the screen. By pressing the "+" button located at the bottom right side of the remote. I held it in for 3-4 seconds. Once again thank-you.
Yes thank you fishin guy. We will have to add this one to the list of lockout codes and commands we have started here. Good Job!
FishinTVguy, can you please help me I have a Centrex Ctt8009E tv with a shot Remote, I have 2 different universal remotes that will only take a 3 digit code, can you tell me what the code is.
Regards
Richard
Thank you for this reply. My grandson has done the same thing by locking it and I so looking forward to going home and trying the above. Thank you for this as this has been bothering me all week
Grateful
I am so grateful for this my grandson locked the TV and we have had problems all week thnak you
Grateful
I've had a similar problem with a Muller TS-21TV (sold in Australia through discount stores some years ago). To unlock the TV from blue screen with red padlock, press & hold the 'Disp' button on the remote control for at least five seconds.
i have a matsui M15DIGB19(A) and i have accidently locked the buttons, and dont have a remote to take it off, is there anyway to bypass it
any help would be greatfully appreciated.
cheers