Question about Acer Aspire Z3771-UR30P

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Monitor periodically has flickering pixels but then they go away

I have a acer z3771 all in one computer. Every now and them I get a bunch of flickering pixels in a verticle pattern on my screen. They usually start off just a few and then spread all over in about 5 minutes. Once the whole screen is covered the screen goes black and then its back to normal. I just got this computer 9 days ago and I have up to 15 days to return it I need some advice please! What is wrong with my computer?

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Posted on Jan 02, 2017

Riziel
  • 116 Answers

SOURCE: monitor goes black

Sorry to have to tell you this, but this is common in LCD monitors. The reason that it is going black when it boots is for one of two reasons. You either have a bad power supply that powers your LCD or your LCD's backlight is blown. These can be repaired or you can purchase a new one. But if it goes black 9 times out of 10 is because the backlight is bad. These can be repaired!

Posted on Nov 26, 2007

  • 2 Answers

SOURCE: Acer AL1912 19" LCD Monitor goes black after power up.

The problem with this monitor is a leaking capacitor on the power supply board. It is the middle one at the top in a row of three. The value is 10V 1000uf. Common problem for these.
Remove 4 screws from back of display. The case can be popped apart with a small flat putty knife at different points along the two seams. Three latches on each side and two at top and bottom. Push and twist at the latch points. There is a metal cover over the two boards. Power supply board to left. Screws and plugs can be romved. Unsolder Capacitor and replace. Radio Shack probably has them. Maybe a couple bucks. Be sure the power has been off for a while. These also have problems with the button board and corrosion at ribbon cable.

Posted on Feb 28, 2008

SOURCE: monitor flashes display 2-3 times then goes blank on initial boot

Throw it out the window. Acer sucks.

Posted on Mar 19, 2008

Geekman
  • 32281 Answers

SOURCE: Blank screen on AL 2223W

When you switch on the computer and monitor does the monitor power light illuminated?
If not check the power cable, if the power light is on try connecting it to another computer, if it works on another computer then the fault is in your computer or a faulty video cable (try another video cable).
If the monitor does not work then it is faulty, if it is OK then your computy is faulty.

If the fault is in your computer, you didn't exactly pinpoint the nature of your fault.
Does the power light on your computer illuminated when you power up?
Does your computer actually boot up, does it give and beep code (count the number of beeps - 7 beeps usually means video problems, depends upon the type of BIOS)?
When your computer first boots up and you see POST information on the screen then nothing, it is most likely :-
1. The refresh rate of the video card has been set too high beyond the monitor's specification.
2. Video card configured with incompatible monitor.

If you computer fires up and the monitor is OK the you have a faulty graphics card, you need to replace it.

Posted on Nov 13, 2008

  • 1 Answer

SOURCE: monitor goes black after a few seconds

I have the same problem on my Acer AL1711. The monitor was out of warranty so I opened it up and found one of the 1000 mf capacitor almost ready to pop. A 50 cents replacement from allelectronics.com fixed the problem.

Not recommended for anyone without experience soldering electronic components to PCB's.

Posted on Dec 29, 2008

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1. Check the cables for lose connection in the connectors.
2. Check if there are interferences of magnetic fields from other gadgets.Yes, check if near your laptop, you haven't placed speakers, florescent lights, cell phones, radios and any other electrical device.
3. Check if there were any changes in the display settings like when some computers are upgraded from their original versions. For instance, many laptops that have been upgraded from Windows 95 versions to higher versions, have shown problems of flickering due to poorly calibrated refresh rate.
4. Many a time, it may occur that the pixels on your LCD laptop screen/LCD Monitors are damaged in certain area and so you're unable to see proper images. If that is the case, then you don't have any other choice but to change the entire screen and replace it with a new one.
5.To check if there is no problem in your video card, connect another monitor to your laptop through the VGA port. If it shows any faint images or jumbled images, then the main reason for your laptop flickering screen is your video card.
6. if you don't find that there is any other problem you can detect, there must be problems within your computer monitor screen, otherwise It is advisable to go to your laptop service center and get the laptop checked. If you find that your laptop screen is still in warranty period and you find problems of flickering, it is best to get it changed.
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Answer Sometimes if the refresh rate isnt set high enough you will see a noticeable flicker on the screen .. to change the monitor refresh rate .. you can right click on the desktop and then left click on properties .. click on the setting tab then click on the advanced tab then click on the monitor tab ..look in the drop down menu where it says 60 hertz and see if the refresh rate can be changed .. if it cant .. uncheck hide modes the monitor cant see and then click on the drop down menu .. pick a refresh rate .. 75 hertz is what i use and it should stop the flicker


Answer
keep electronics away from your computer. Mobie phones etc. can distort the image shown on the screen for periods of time, usually when a text or call is coming through.

Answer
A nearby device can cause stray magnetic fields that will cause the display to be affected.
A problem inside the monitor will cause the display to have problems.
If somebody turns on their monitor nearby, the monitor's degaussing when it starts up will cause your monitor to dance wildly for a moment or two.

Answer well one major cause can be the weakness of the electron gun that fire electrons on the silicon plate (pixels) that produces image on the screen so there must be some problem in electron gun in my view



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Hi
What causes monitor screen to flicker?
Answer
keep electronics away from your computer. Mobie phones etc. can distort the image shown on the screen for periods of time, usually when a text or call is coming through.

Answer
A nearby device can cause stray magnetic fields that will cause the display to be affected.
A problem inside the monitor will cause the display to have problems.
If somebody turns on their monitor nearby, the monitor's degaussing when it starts up will cause your monitor to dance wildly for a moment or two.

Answer well one major cause can be the weakness of the electron gun that fire electrons on the silicon plate (pixels) that produces image on the screen so there must be some problem in electron gun in my view

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Try another known working monitor to see if you get the same symptoms, if they go away then you know the original monitor is bad. if you get the same symptoms then the video card is bad.

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