Question about Dell E156FP 15" LCD Monitor

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I need to change my monitor fuse

I don't know how to open up this monitor. It has a lock and I don't know how to unlock it. Somebody help me please.

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Hi! I have a problem with my montior and I hope you can help me! I have a LG monitor L1918s. on monitor it appears all the time "ocd locked" and after 5 secondes it changes into "ocd...

ocd unlocked and lock definition: This function allows you to lock the current control settings, so that they cannot be inadvertently changed.

This is a method to unlock it: Press and hold "Menu" button for several seconds until the monitor show message "OSD Unlocked" and then you can use the monitor's button again. There's a chance that "OSD Locked" message will disappear from your monitor but don't stop until "OSD Unlocked" is showed. If it is being shown automatically you must have fiddled with the buttons to much and set a delay.

If I have not solved your problem please reply and explain to me in more detail what your problem is.

PCHELPSTER007 from youtube

Jun 25, 2011 | Computer Monitors

2 Answers


The problem is caused by either its main controller board or button controller board.

Well, I will try to change button board first, because it's cheap.

If you have never open up the LCD monitor, please don't open it up and try to fix!
Either you will damage the monitor when you open and/or be shocked by high voltage electricity!!

May 28, 2011 | HP 1502 LCD Monitor

1 Answer

Menu bar appears automatically in front of monitor and automatically uses it.

My SAMTRON monitor 56V is having a problem now..
The control menu of monitor settings which will appear
when the monitor control panel is pressed(Brightness,Contrast....) is coming frequently at my monitor without activation...
Now when the monitor is turned on, the control panel will come,and will not go even if we change the settings..
The control panel is switching between the CONTROL LOCK and UNLOCKED mode during each 5 seconds....So now I cant see anything on my screen
at the middle of the screen due to this overlaying settings panel.
I is giving the same effect as the Menu key is pressed in the panel..(exit,-,+,Menu).
This problem started some 2-3 months before..
Today I hav put some etylene cleaning solution through the gaps to clean from dust... still no change...
If somebody having a remedy please help me..

Sep 11, 2010 | Computer Monitors

2 Answers

My new 202E 20'' monitor says Monitor Controls Locked. How do I unlock it to change the brightness, color etc please?


Press and Hold the Menu button (which is towards the left of Power button) for 20 seconds until it displays "Monitor Controls Unlocked" on the screen.

Hope this helps !


Aug 30, 2010 | Philips 150C4FS 15" LCD Monitor

1 Answer

I have a problem with my Samsung 913N monitor.

Service manual:

If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for:
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Jul 11, 2010 | Samsung SyncMaster 913N 19" LCD Monitor

5 Answers

Hcl lcd monitor osd locked

my moniter was automatic restarted, and osd lock not open,where is is osd open option?

Dec 19, 2008 | Acer AL1916W 19" LCD Monitor

13 Answers

Samtron 56V monitor

Even i was also having the same problem. We can unlock the control lock by holding the menu button for 10-20 seconds.... But now my problem is the message "Controls locked/" appears continuously. Screen width also reduced. If anyone know the solution for this please help. thanks in advance.


Oct 16, 2007 | SAMTRON 55V 15" CRT Monitor

2 Answers

Problem In Control Panel

near microprocessor change c945b transistor, this may help u

Sep 08, 2006 | SAMTRON 55V 15" CRT Monitor

4 Answers

Problem with Control Panel

It sounds like theres a front panel button that has become intermittant and making contact all by itself. Sometimes when you clean the screen, the cleaner will drip down between the crt face aqnd the cabinet and make the switch in front go bad. Im not sure if this is the case in your problem but its a start. If you didnt spill anything or drip anything into the front panel then your maicroprocessor could be causeing the problem, or the 5 volts that feed the micro could be noisy ie, bad filter capacitor in the power supply. Now as im sure your aware of the hi voltage inside these sets? Its best if you dont have the training to get a pro to assist you as this hi voltage can hang around inside the set even if its unplugged. Good Luck

Jul 03, 2006 | SAMTRON 55V 15" CRT Monitor

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