Hi, the problem was the white vertical band on my laptom screen, but everibody said that you need to replace monitor... and you know what after few days it desapeared... so.. can someone tell me why it happens? and should I expect that it will back?
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i experienced a tainted vertical black lines on the boths sides of my lcd screen. There was no scratch or whatsoever that could be the reason why thsi balck colored vertical lines to spread. Hope you can help me solve this problem. Thank you..
Some of the transistors or the connection to the panel inside the monitor are damaged. There is no absolute fix for this problem.
You can try pushing on the bezel (NOT ON THE SCREEN) of the monitor at the edge of the screen directly at the lines and you may be able to push the connection back together well enough that the line goes away, but usually in desktop monitors the bezel is too rigid to allow you to put any pressure on the connections at the back of the LCD panel.
The white screen tells me that the display cable (inside your monitor) may be unattached or broken. The color bands if they are vertical or horizontal lines tell me that your display cable needs to be replaced.
So overall replace your display cable. If this doesn't entirely fix the problem your logic board (inside the monitor) needs to be replaced.
Your new LCD is faulty. The band on your old one is the end of it I am affraid.
Laptop LCD's although built to take a beating (or so it seems) are extremely fragile. It only take a very small drop to end their lives.
Sound like the vertical deflection circuit is defrctive. Check for cold solder around the vertical IC, Check the Diode and cap that supply power to the Vertical IC. If it still do not work, change out/ replace the virtical IC.
You may want to try and unplugging the power and video connectors of the Dell monitor. Check for anything out of the ordinary with the AC plug and the video connector. If none, plug them back in making sure that they are snug and fitted properly. If problem persist, see if it is possible to rotate the way the AC plug is connected to the mains (sometimes this works and can be done if you are not using 3-prong or the uneven 2-prong AC plug. Sometimes, this can also be done on the other end of the AC plug).
Check your docking station (though unlikely but possibly).
If still a no go and your laptop works ok, then your external monitor needs some looking at. This would involve circuit analysis and component level repair. Perhaps your best bet is to have a qualified professional take a look at it. Good luck and pls post back how things turn up or if you need further information. Kind regards.
Without a second thought, send it back.
When you say the monitor has not be dropped, wht you are really saying is it has not been dropped by you.
There were alot of hands involved in getting it from the production line to your house.
At any stage it could have been dropped or given some form of impact (normally in transit)
That fault is in the panel itself and cannot be fixed.