Question about Computers & Internet
Its not a software problem since the problem follows the monitor. I have found the filtering coils feeding the back lamp power supply (inverter) to be stripped of its coating improperly. The coil may be soldered into the board too deep causing the coating to be soldered in the through-hole. This causes a very thin connection and a crack develops. when the screen turns on the joint warms up and the screen backlight turns off because power to the inverter is disconnected. when it cools down it reconnects. this is a hairline fracture in the solder joint. this is the 12 volt dc + line to the inverter. The coil filters out high frequencies by offering impedance to any AC that may be present (interference, noise from nearby devices etc.).
If you are comfortable (and knowledgeable) with electronics repair you can remove the back cover and locate this coil. then slightly disturb it to see if your screen flickers on and off.
We received a shipment of these screens at work and 6 out of 10 had this problem.
Posted on Apr 17, 2014
I see that you are having issues with you LCD monitor intermittently showing Video for a few seconds then just dies to a black screen and will show windows in the desktop then go back to a black screen again on the issue ...
I believe that what you are experiencing on the issue is a screen refresh rate setting in windows.
we will need to check you video settings on the system for the issue.
Before we go and change some settings on your system we will need to boot into safe mode first.
1. From Shut down as soon as you turn your system on keep on tapping the F8 key on-top of your keyboard, this will give you the Windows Advance Options Menu.
2. On the List Select Safemode once highlighted press enter once, a bunch o things will show up on the screen this means that windows is loading in Safemode and windows will be loaded but all drivers will not so may encounter a screen that has big Icons and letters on it which is normal.
3. Log-in you windows profile if you have a password setup, once logged in do the following instructions below.
Changing the Screen Refresh rate:
1. Right Click on your Desktop/wallpaper to get the pop up options menu, click on personalize.
2. In the personalize window click on display lower left side of the window
3. Then Upper Left side of the new window click on Change Display setting then on the next page lower right side you will see Advance settings click on it.
4. you will get a small window click on the monitor TAB you will see there a drop down for the Screen Refresh rate click on the drop down and select 59 Hrtz, then Click on Apply then OK to save the settings work on your monitor.
Posted on Apr 06, 2011
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Posted on Jan 02, 2017
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