Question about AOC 19LVWK LCD Monitor

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Horizontal lines Hi.....My monitor has horizontal lines that increase, decrease or almost dissapear in number depending on the position of the windows that you open and the content of what you are watching.....When you open the OSD Menu it tends to get worse and the image almost flickers in the position of the OSD.....I think that the more detailed the image is, more lines and streaks appear......I would appreciate your help...Thanks in advance.

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Re: Horizontal lines

Sometimes I encounter vertical lines below..... when i tap the sides it clears for a time being  but after a few moment again appears

Posted on Oct 26, 2008

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Re: Horizontal lines

Try to follow the following tips I posted:

1) White horizontal line (no vertical deflection)
Check / replace R548, R549
2) OSD appears as one big horizontal line with wrong colours and noise (looks like no hor. sync). Teletext is ok
Replace proc. IR01 (ST9293) which contains the OSD functions. (expensive IC)
3) White horizontal line (Frame collapse)
Dry joint on TA8427K, Frame IC
4) The set goes into protection and tries to restart. The tube shows no horizontal lines
After disconnecting the horizontal plug the +148V and CRT high voltage remained stable. The small pcb on the tube (scan coils with 5 or 6 pins) was dry jointed at copperside

Hope this will be helpful.

Posted on Dec 06, 2007

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SOURCE: Horizontal lines

i suggest you change video board .

Posted on Apr 19, 2008

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Explain how the monitor buttons work

Monitor Icon Description of icon function moncont.gif Power - Turns the monitor on or off.
Brightness - Using this button or wheel the user can increase and decrease the brightness on the screen.
Contrast - Using this button or wheel can increase and decrease the amount of contrast on the screen.
Horizontal Size - Allows for the picture on the screen to be stretched to the horizontal edge of the monitor.
Vertical Size - Allows the picture on the screen to be stretched to the vertical edges of the monitor.
Horizontal Position - Allows the picture to move moved horizontally, once in the center the user can then use the Horizontal size to stretch it to have an equal amount of black border on each side.
Vertical Position - Like the Horizontal Position, using this button or wheel the user can move the picture up or down to center the picture more appropriately.
Full Screen - Sets monitor to full screen.
Degauss - This button will degauss the CRT, restoring possible color impurities. After this button has been pressed the degaussing circuit will be activated and then deactivated after a few seconds. Pressing and holding this button for a few seconds may cause your computer monitor to reset all data.
Corner and Trapezoid Correction - Using this button or wheel the user can either round the edges of the picture or move the picture inward like an hour glass or outwards.
Vertical Linearity - Sets the width of the vertical lines.
Moire - Removes or reduces the Moire effect, if any.
OSD Controls - If the monitor contains OSD controls, allows for the OSD menus to be adjusted.
Power Management - Allows the user to define the power management settings through the monitor itself and not the software.
Monitor Status - Displays the current monitor settings such as refresh rate and other settings.
Language - Sets the language on the monitor.

Aug 16, 2014 | Computer Monitors

3 Answers

Monitor viewing position

what model of monitor do you have..?

May 18, 2008 | Philips Brilliance 107B 17" CRT Monitor

1 Answer

White horizental lines across the LCD Monitor.

This is a high voltage horizontal output problem. Could just be a loose connection or an intermitant component failure. If you can get into it, check for any loose connections. Sometimes this can also be caused by a large accumulation of dust. Make sure you unplug it before opening it up.

Apr 04, 2012 | HP LP2465 24" LCD Monitor

1 Answer

My viewsonic Va1912wb flashes horizontal lines when you turn it on and i know it is not in pal and it is not the refresh trate help me please

Hi There and Welcome to Fixya.

Horizontal or vertical lines flashing/running across the screen poses serious display issues with any LCD/CRT monitors. It only boils down to 2 possible causes :
  • Corrupted video driver
  • Hardware issue
To help you determine which of the above, here's what you need to do.
  • Ensure that the computer is turned OFF
  • Disconnect ALL USB devices except the keyboard
  • Turn the computer on and immediately hit "DEL" (in some systems, it's the "F2") key repeatedly until you reach a different screen. (not the usual Windows screen)
  • Welcome to the BIOS screen
  • From here, spend 30min to 1 hour observing if the lines are present in this mode
If you still see the horizontal lines, then there's a need for the monitor to be serviced by a certified/trained technician. The link below will direct you to their support page for repair/replacement options, depending on your warranty status :

ViewSonic Support

Otherwise, the problem can be resolved by re-installing the operating system.

I hope this helps, Thanks for using Fixya.

Apr 09, 2011 | ViewSonic VA1912wb 19" LCD Monitor

1 Answer

Unable to adjust the settings for brightness and contrast .

To adjust the display settings:

1. Press the flywheel control. The main menu appears.

The current display settings appear across the top of the main menu.

2. Rotate the flywheel to highlight an option. The name of the
highlighted option appears in the center of the menu.

3. Press the flywheel control to select the highlighted option, then
rotate the flywheel to adjust it.

Some options can only be enabled or disabled. There are also some
options that contain additional menus.

4. Repeat Steps 2 and 3 until you have made all your changes.

5. Rotate the flywheel control until Exit is highlighted, then press
it to exit the OSD control system.


Contrast increases or decreases display image contrast.

Brightness increases or decreases display image brightness.

Horizontal Size increases or decreases the width of the display image.

Horizontal Position moves display image to the left or right side of
the screen.

Vertical Size increases or decreases the height of the display image.

Vertical Position moves display image to the top or bottom of the

Pincushion curves the sides of the display image inward or outward.

Trapezoid increases or decreases the trapezoid distortion of the
display image.

Degauss removes magnetic discoloration from the display image.

Recall returns most options to the original factory default settings
if the monitor is currently using a preset video mode. (See the “Video
modes” section in this guide for information about the factory preset

Advanced Option opens the Advanced Option menu. Color opens the Color
Manager menu.

Language changes the display language for the OSD control system.

User displays information about the monitor’s preset modes.

OSD Manager moves the OSD control window on the screen.

Exit closes OSD control system.

Jun 21, 2010 | Gateway EV 910 19" CRT Monitor

2 Answers

Horizontal lines on ASUS laptop screen

HI friend

If you have External Monitor check by connecting it
if you get display on external monitor without line it means Display screen is Bad, if Line appears on external display as well then there is Motherboard problem Please contact Your nearest service centre for Service.

Jul 15, 2009 | ASUS VW222U Monitor

1 Answer


If you mean 'flyback' or 'horizontal output transformer' and have the part number available, try one of the sources here:
Flyback links 
If you do not have the number you may have to search Viewsonic's website to loacte it.
Warning; the number of suppliers for CRT monitor parts is shrinking rapidly, my best supplier, ICM in California is long gone. 

Mar 31, 2009 | ViewSonic E70f 17" CRT Monitor

2 Answers

Horizontal lines

i suggest you change video board .

Apr 19, 2008 | Samsung SyncMaster 152N 15" LCD Monitor

1 Answer

56v-Screen shrinked horizontly

You need to service your monitor. Give it to an authorized service center.

Dec 15, 2006 | SAMTRON 55V 15" CRT Monitor

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