Question about Sony CPD 400PS (White) 19 in.CRT Conventional Monitor

1 Answer

Image center drifts, bad keystone, jiggles

My Sony multiscan 400PS has been working well for years but now it has developed a problem with image geometry and stability. The monitor is used with a mac mini and with a pc clone with a clone vga card. The monitor exhibits the same behavior regardless of which of these computers it is hooked up to. Furthermore, the behavior is the same no matter what screen size and refresh rate is chosen. No apparent live source of EM interference is around the monitor. The monitor is plugged into a line-conditioning UPS, and it doesn't change if I plug it straight into the wall. Giving it the occasional gentle or not-so-gentle whack on the side doesn't fix it either. For several months now, the image has occasionally started to jiggle slightly up and down, which was pretty annoying, but somehow after about an hour or so it would calm down and go back to "normal". Sometimes the jiggling would be there but in almost imperceptible amounts. About three months ago, I woke up the computer from an overnight slumber and the bottom of the image was bouncing up and down. After repeatedly turning it off and on, I gave up and let it rest for a day or so. Subsequently, the bouncing diminished considerably, but the screen geometry was altered and a bad keystone effect was taking place. In addition, the image had to be "centered" by entering near-edge parameters into the monitor's image options (little buttons that let one shift the image to the right and left). Somehow, after about a week or so, the monitor seemed to get better on its own and went back to more or less normal. Then a couple of days ago, the bouncing effect returned, and once again, it is almost impossible to center the image on the screen. The keystone correction is now set at 100% but it still doesn't fully correct. New monitors are cheap nowadays ($200!) but I prefer not to add to the big pile of discarded stuff prematurely, so if repair is possible and reasonably priced, I'd love to hear about it.

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 that hasĀ over 500 points.


    An expert who has answered 200 questions.

  • Expert
  • 326 Answers
Re: Image center drifts, bad keystone, jiggles

Hello, the repair seems possibble to me. One of common reasons for the above mentioned error can be bad soldering (contact). Ask a pro to do the job for you. If you need more info please advice. Arpi

Posted on Mar 22, 2007

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

The screen is tilted

You can adjust the keystone of the monitor..
this will remove the trapezoidal shape and square up the image to the monitor.
Check on the monitor for the menu controls and you should be able to find the keystone adjustments... allows you to adjust the upper width, lower width, etc...

Nov 27, 2009 | HP Compaq FS 7550 17" CRT Monitor

1 Answer

LG W1934S monitor. It displays an image for about 3 sec and goes black. It does not turn off but loses image. Unplug monitor cable and plug in again and the problem repeats. I tried "jiggling" plug but...

first you ensure that it is a problem with TFT or CPU. you can check it with another monitor. if it is working with another monitor then your TFT has been faulty.then you can repaired it from service center.

Nov 04, 2009 | LG W1934S-BN 19" Monitor

1 Answer

Screen image on GPS 400 PS jiggles

Make sure that the driver is updated. Then if it is, contact apple.

Feb 08, 2009 | Sony GDM-400PS 19" CRT Monitor

1 Answer

Screen always bleu

ok.. most probably the data cable of your monitor is damaged.. try to check it if the pins are still in tact.. if not, then you should replace it with new one..

Jan 20, 2008 | Sony GDM-400PS 19" CRT Monitor

1 Answer

Sony E530 focus (?) problem

I think it can solve with this way:

Press Menu on the front panel of the monitor. Then press OK button and go down and go to COLOR : PRESET. Press OK and go down. Press IMAGE RESTORATION.

My E530 monitor is more clearly, now.


Sep 23, 2007 | Sony Multiscan E530 (White) 21" CRT...

1 Answer

Sony Multiscan E400

back light or inverter problem Dont know about repairs though.

May 20, 2007 | Sony CPD E400 19" CRT Monitor

1 Answer

HP f1903 LCD Monitor mild flickering & color variance

I would bet it is the cable or connection. Have you tried connecting the monitor to a different PC?

Feb 14, 2007 | HP Pavilion F1903 19" Flat Panel LCD...

1 Answer

CRT monitor too bright

I have/had same problem. I have ATI Radeon display adapter and in driver settings there was adjustment for brightness. I adjusted that to minimum and now the brightness is pretty good (still little bit too bright, monitor setting 0%). Other succestions welcome...

Sep 28, 2006 | Keytec Sony Multiscan E500 21 in. CRT...

Not finding what you are looking for?
Sony CPD 400PS (White) 19 in.CRT Conventional Monitor Logo

112 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Computer Monitors Experts

Cindy Wells

Level 3 Expert

4718 Answers

Lala Alonsi
Lala Alonsi

Level 2 Expert

56 Answers

ray gallant

Level 3 Expert

34564 Answers

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

Answer questions

Manuals & User Guides