Question about NEC MultiSync P1250 Plus (White) 21" CRT Monitor

1 Answer

NEC P1250+ hisses and scrren blips intermittently

Hi, My NEC MultiSync P1250+ has two symptoms: 1. At start up it emits a high frequency hiss from the back. After it warms up a bit, the noise stops. 2. Intermittently, the picture will blip off for an instant and come right back. Pleas Help, Thanks.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 68 Answers
Re: NEC P1250+ hisses and scrren blips intermittently

I had the same problem. Your monitor is warning you of failure. The hissing sound is the picture tube powering up. The momentary blank screen is when the power supply for the monitor has become hot. Your monitor is getting ready to quit. My suggestion is to buy a new monitor. To have a tech repair it would be more expensive then buying a new one.

Posted on Sep 20, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

2 Answers

Xbox360 to NEC Display NEC MultiSync PA271W

You need a DVI to HDMI connector. You will need to connect the audio separately to your sound system as DVI does not support audio.

Dec 02, 2013 | Nec Display NEC MultiSync PA271W-BK - LCD...

1 Answer

Hissing noise horizontal lines

Hello erl, hi.... the hissing noise is usually caused by high voltage arching, but this is suppose to be soft. if the hissing is unusually loud, the high voltage transformer clip cap may be loose, this may cause the horizontal line you see on the screen. take precaution when dealing with this.... here are steps that may help..

1. unplug the unit. allow around 5 minutes for all voltages inside the unit drops to a safe level.
2. open the back cover. place the monitor face down on a table with a dry clean rug or towel.
3. locate the picture tube. on the top side you will see a wire with a cap at the end.
4. use or wear a cloth glove and feel if the cap is loose. re clip the cap and make sure it is secured.
5. replace the back cover.

Feb 15, 2012 | Philips Computer Monitors

2 Answers

NEC Multisync LCD1765: Screen flashes and then mintor turns off with message "No Signal"

Restart your computer.
As soon as it starts the start-up process, keep tapping the F8 key, repeatedly.
When you see the Windows "start-up" menu, select "start in safe mode".
Does your monitor work in this low-resolution (640-by-480 or 800-by-600) mode?
If so, then you had configured Windows to a too-high resolution that the NEC did not support.
Choose 1024-by-768, and click "Apply", to test that the NEC supports this mode.

Try connecting the NEC to some other computer, to see if the NEC itself is the problem.

Mar 28, 2011 | NEC MultiSync LCD1765 17" Flat Panel LCD...

3 Answers

Need a user's manual for a NEC EA261WM monitor, but can't seem to find one on the web.

You can download from NEC support pages:
MultiSync EA261WM-BK User's Manual
MultiSync EA261WM-BK
user manual
MultiSync EA261WM-BK
user manual
MultiSync EA261WM-BK
user manual

Sep 18, 2009 | Computer Monitors

1 Answer

NEC Multisync 1770gx lcd monitor goes blank when I move the unit


you must to check the volt at pin 1 of the lcd slot screen you'll get about 3.3 volts if not it can be the problem.


Jun 15, 2009 | Computer Monitors

1 Answer

Touch system not working NEC multisync 1550v

You have to install the nec driver for this monitor. I have the same monitor. Im looking for the driver now. There are 2 versions of this monitor with the same model # . You will need to find the driver to the touchscreen model.

May 03, 2009 | NEC MultiSync 1550V 15" LCD Monitor

1 Answer

NEC Multisync 1760NX malfunction

I repaired mine by replacing C807, 22uF 50V capacitor in the power supply.
Monitor Mike

Nov 07, 2008 | NEC 1760NX-1 (White) 17 in. Flat Panel LCD...

Not finding what you are looking for?
NEC MultiSync P1250 Plus (White) 21" CRT Monitor Logo

Related Topics:

216 people viewed this question

Ask a Question

Usually answered in minutes!

Top NEC Computer Monitors Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

William Miller
William Miller

Level 3 Expert

8795 Answers


Level 3 Expert

2598 Answers

Are you a NEC Computer Monitor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides