I unlocked OSD Locked of CRT ViewSonic e70f by pressing about 10 second on button mark as 1. eventually contract menu appears and gradually the brighness reducing to minumum and the screen became dark and nothing appears. Any one help me to sort out this problem

The OSD can be enabled or disabled by pressing and holding the Menu button on the front panel for 10 seconds. If the OSD is locked, the warning message OSD Lock displays for ten seconds.

* If the OSD is locked, press and hold the Menu button for 10 seconds to unlock the OSD.
* If the OSD is unlocked, press and hold the Menu button for 10 seconds to lock the OSD.

Option 1: OSD lock - all 4 buttons are locked except the "POWER"
button. Press and hold the "MENU" and ">" buttons for 3
seconds to lock the buttons. Repeat this step to unlock.

Option 2: OSD & Power button lock - all 5 buttons including the
"POWER" button are locked. Press and hold the "MENU"
and "<" buttons for 3 seconds to lock all 5 buttons. Repeat
this step to unlock.

Depending on your monitor:
Solution 1
1. Disconnect power cord.
2. Press and Hold button 1.
3. Plug power cord back in.
4. If necessary, press power button while still holding button 1.

Solution 2
OSD and Power Button Lock Modes
OSD Lock This mode locks all current control settings and prevents access to
the control menus until this mode is unlocked.
? OSD Lock: Press and hold [1] and the up arrow
for 10 seconds. If any
buttons are pressed the message OSD Locked will display for 5 seconds.
? OSD Unlock: Press and hold [1] and the up arrow
again for 10 seconds.

See page 7 of this User Guide for further instructions:
http://www.viewsonic.com.au/support/manuals/files/LCD/Series%20X/VX715-2%20User%20Guide%20English.pdf


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OSD lock should now be cleared.

Normally the OSD lock will only be displayed for 5 seconds.
Regardless you should be able to get rid of it by pressing holding the up arrow key for 10 seconds.
If this fails to resolve the issue try this. Disconnect power cord. Now press and hold button 1. Plug the power cord back in. You may have to press the power button while still holding button 1. The OSD lock should clear after that.
Hope this helps.

OSD lock is a feature which locks the OSD. It can be enabled or disabled by pressing the menu button for 10 sec. It is the lock which locks the On Screen Menu for changing the menu settings.
To unlock press and hold the menu button for 10 sec.
Thank you Sir, Have a nice day.

To enable or disable the OSD lock feature, press and hold the 1 and the up arrow for 10 seconds.

Assuming this is a E70fB monitor
OSD Unlock : Press and hold the [1] and [▼] buttons again for 5 seconds. The message “OSD UNLOCK” will then display briefly, indicating that the OSD image settings are now unlocked.
Userguide available at http://www.viewsonic.com/assets/027/7929.pdf 

On some display devices, there is an OSD Lock that locks all current control settings and prevents access to the control menus until this mode is unlocked.

The method for unlocking the OSD is different for different monitors, but will be one of the 2 below. If the first method doesn't work, try the second.

Method 1: Press and hold both the [1] button on the front of the monitor and the down arrow button for 10 seconds.

Method 2: Press and hold both the [1] button on the front of the monitor and the up arrow button for 10 seconds.

Note: These same buttons, when pressed for another 10 seconds, will lock the OSD.

This is for Viewsonic LCD, but it's probly pretty similar for you...

OSD and Power Button Lock Modes
OSD Lock This mode locks all current control settings and prevents access to
the control menus until this mode is unlocked.
? OSD Lock: Press and hold [1] and the up arrow
for 10 seconds. If any
buttons are pressed the message OSD Locked will display for 5 seconds.
? OSD Unlock: Press and hold [1] and the up arrow
again for 10 seconds.
raj, [email protected]

Press the [1] key & hold it for 10 seconds / till OSD Unlock appears on the screen. When OSD unlock appears on the screen , release [1 ] & press [1] or [2] key. This will unlock the OSD.