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This is George I have a 19" viewsonic crt color monitor It has a horizontal line . i can't find out whats causing it . Could it be the flyback?

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  • chinthaka Jayasinghe
    chinthaka Jayasinghe May 11, 2010

    whats the model of the monitor & how thick is the line?

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Try adjusting settings on the monitor. There should be a menu button on the monitor. If that doesn't help try your monitor on a different computer. If the line is still there your monitor is bad. If the line is not there then you may have a problem with the Graphics Card. You could also try a different monitor with your computer. If the line is there then it probably a bad Graphics Card. I have had this same situation and it has usually been a bad monitor.

Posted on Jan 08, 2009

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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

Screan on monitor not lighting up.


How do you know the flyback is good if it is not functioning?
Some causes for no high voltage:
short or open horizontal output transistor.
open or shorted capacitors in horizontal circuit.
Defective or non functioning horizontal drive circuit.
Open yoke.
Malfunction in horizontal B+ regulator circuit.
Faulty solder joints.
Short in CRT.

Apr 26, 2010 | NEC AccuSync 90 19 in.CRT Conventional...

1 Answer

Black screen when monitor power is on


Flyback has given up the ghost at this point on computer monitors there not worth fixing because flat panels are cheaper now a days but you can use best buy recycle program to see if you can get soemthing back for it www.bestbuy.com if you find this information useful please rate fixya when your rating thanks.

Apr 26, 2009 | ViewSonic P815 21" CRT Monitor

1 Answer

INEED NO. OF OUTPUT HORIZONTAL LINE TRANSISTOR


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

1 Answer

Horizontal out always damage in minutes


Probable defective flyback (horizontal output transformer).  

Mar 10, 2009 | ViewSonic E70f 17" CRT Monitor

2 Answers

DELL P1130


usually the screen control potentiometer cause this type of problem, you can check the screen control is working properly.If not you have to replace the flyback transformer.

Apr 06, 2008 | ViewSonic VX924 19" LCD Monitor

1 Answer

Da?±a el transistor horizontal


Hola,

El transistor de salida horizontal es un 2SC5331 (Q303). Por favor también compruebe el transformador Flyback (FEA661).

Estará bien comprobar también Q103 (IRF740) que es el regulador de recorrido HV. En algunos casos, D123 defectuoso en el recorrido G1 puede causar el HOT a corto.

Un diagrama esquemático / manual de servicio está disponible aquí.

Tengo que hacer el uso de trnaslator en línea para contestar a su problema.

Buena suerte y saludos cordiales.

Jan 04, 2008 | ViewSonic G790 19" CRT Monitor

3 Answers

Horizontal lines are appearing and moving acrosss the screen of my View Sonic E50C Monitor...


What is wrong with your monitor is that the Horizontal section is going faulty, the lines you are seeing are the Horizontal Retrace lines, usually invisable in a working unit. It is often a faulty capacitor(s) OR a Diode breaking down.. in the area of the Flyback Transformer. Probably time for a new one unless ya can fix it yaself.

Jun 11, 2007 | ViewSonic E50C 15" CRT Monitor

5 Answers

Horizontal output transistor keeps failing


The horizontal output transitor is always connected to the primary winding of the flyback transformer (via collector) and also to the horizontal deflection coil via an electrolytic capacitor. The most likely suspect for damaging the transistor is the fylback transformer. In some countries there are electronic stores that test flyback transformer by winding a few turns on the ferrite core and applying a test voltage. This test will only test the secondary. The primary winding is difficult to test for turn to turn short because the resistance is quite low and you do not know the 'good' resistance.

May 15, 2007 | ViewSonic E70f 17" CRT Monitor

3 Answers

A thin horizontal line across the screen


I know I have seen thin lines in the past on older CRT monitors, these are usually wires which support the aperture grill. LCD is just a panel so this must be something different. What color is the line? It is probably an error in the scanning process.

Aug 01, 2006 | Gateway FPD1975 19" LCD Monitor

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