Question about Sampo AlphaScan 521 Monitor

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Screen flickers the screen flickers even when the cpu is connected, but if there no cpu connected its always on then it will go off. i had to push the start button again to get it on. what do you think is the problematic part/s?

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Check for bent pins on the sub-D connector. flex the monitor cable while its turned on.. a cut wire will yield just a flickr. especially the H and V sync lines.

Posted on May 09, 2008

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The screen froze even when i hit reset button


I have had this happen as well, several times.It seems to be precipitated by the power connection making intermitttant contact. This is characterized by ththe screen flickering and/or the charge light flickering. This might sound like a dumb suggestion, but everytime mine does this I unplug it from power sources for at least one hour, After this time, I reconnect it to power and on it comes. After it boots up, I have to reset it because it fails to find any of the GPS sats, but this sequence always fixes the issue,

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Computer won't do anything, keyboard does not light up, screen is blank


So there is not so much as a BIOS message on screen? Any beeps?
If there is no life at all, you have a CPU/motherboard failure. This may be direct or indirect (e.g. no power to MoBo). Check your connections.
Otherwise, your boot device may not be operating. This is usually a dead or disconnected HDD. Check that it is plugged in. Does it get warm? Can you feel any vibrations from it? It should spin even if your cpu is dead but MoBo is alive.

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My computer keeps flashing the blue lights on and off,screen blank,not coming on tried to take battery off hold down start button connect to ac nothing happens same problem


Sounds like video card or video cable is faulty or loose. Is screen always blank no matter what you try? Were you getting intermittent screen flickering. There is a ribbon cable that runs from base to lid that sometimes get worn or loose from constant open/close of the lid. Try cranking lid to different positions while trying to boot up. You maybe able to find a video card under one of the covers on bottom. push card all the way inward to make sure it is seated correctly.

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C500 Laptop won't come on power button just flashes


Have you tried attaching an external monitor when the LCD screen is disconnected from the motherboard? this connector is located under the keyboard strip – a piece of plastic just above the keyboard.
If it works, this way, then the video cable isn’t seated properly in the connector on the back of the screen. Plugging the video cable back in should fix the problem.
I don’t know how comfortable you are with taking apart laptops but I think that this information could be useful for you.
Source: http://www.asklaptopfreak.com/laptop-notebook-help/2006/08/08/laptop-powers-on-and-shuts-off-immediately/

Sep 28, 2009 | Compaq Computers & Internet

1 Answer

Pc wont boot up, instead a red light flickers.


Flickering LED means power supply is overloaded with something. It might be inside of the supply, but sometimes it is something else. Try that:
1. Disconnect everything from the motherboard except power supply and power button;
2. Disconnect all power connectors from all drives;
2. Remove any cards from the motherboard so all you have is power supply and motherboard with CPU and RAM, nothing else. You can keep connected the monitor and keyboard;
3. Press Power button. Will motherboard turn on normally?

If no - check electrolytic capacitors especially around the CPU, if some of them are "popped" replace them.
If yes - connect drives and cards one per time to localize the problem.

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Hi, my monitor started to flicker 3times/second persistantly.


its the monitor its the main board may stuff up tomorrow may stuff up next week or in a years time hard to day as its only flickering take in for a check up

Apr 04, 2009 | LG FLATRON L1970HR LCD Monitor

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Wide screen not active


wow maybe you should give dell a holler

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Flicker and very slow


turn off your PSP ,then switch on again.. when the screen are in black condition "press R button" and change the CPU speed

Aug 23, 2008 | Sony PlayStation Portable (PSP) Console

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PSP SCREEN FLICKERS AND GOES SLOW IN MAIN MENU


Ok...this sounds crazy but it happened to one of my PSPs. I updated the firmware on my system and the menu started stalling and taking a long time to respond. I shut the PSP all the way down....holding the power button until the light shuts off (about 4 or 5 seconds)...Hold the R button and power the system on again (you should be in recovery mode)...go to CPU speed and make sure it is either set at "Default" or "222"....I belive 222 is the default setting....also make sure the UMD is also set at "Default" or 222....if you're going to use the UMD.

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1 Answer

Monitor flickring


  1. Flickering screen display

    Flickering on the screen can be caused by defective hardware in the computer or by improperly installed software, but it can also be caused by interference from external devices. The following examples describe situations in which your screen could start flickering:
    • Screen starts flickering because of interference caused by devices which generate magnetic fields, for instance:
      • a TV set
      • a laser printer
      • another monitor
      • fluorescent lights
      • hidden power lines
    • Apart from interference, an incorrect setting in your system CMOS setup can also cause flickering. On some systems it is possible to distinguish between interlaced and non-interlaced monitors. The setup of your system should always be colour non-interlaced.
    • Proximity to the monitor of fans, air-conditioning units or other devices with rotating motors.
    • The number of devices using power from the same electrical line. Are you overloading the plug?
    • Monitor placed on an unstable surface.
    • Improper video drivers, this is a software problem, see section B
    • An improperly configured or a defective video card.


  2. Reinstalling the video drivers

    1. Start the computer.
    2. Click Start, select Settings, and click Control Panel.
    3. Double-click the System icon.
    4. Select the Device Manager tab in the System Properties window.
    5. Make sure that View devices by type is selected and locate Display adapters and Monitor in the list.
    6. Click the plus sign (+) in front of both items to get a list of installed devices.
    7. You need to remove every device by highlighting it and clicking the Remove button and OK when the warning message appears.
    8. After doing so for both items, they should disappear from the list.
    9. Close the Device Manager by clicking OK, and you will return to the Control Panel.
    10. Double-click the Add New Hardware icon.
    11. Click Next, select Yes when it asks "Do you want Windows to search for your new hardware?", and click Next twice to start searching for new hardware.
    12. This will take a few minutes and, after it is finished, you will have to restart the computer. Windows 95 or higher will automatically set up the correct monitor and video drivers.
    13. If the screen is still flickering, click Start, select Settings, and click Control Panel.
    14. Double-click the Display icon and select the Refresh tab.
    15. Change the Monitor Refresh Rates until the flickering disappears.
    16. If the flickering remains, go to step C.


  3. Troubleshooting

    1. If it is possible, connect a different monitor to the computer. If the flickering disappears, it is a fair indication that the monitor is defective, otherwise go to the next step.
    2. Set up the computer and the monitor on a different place in your house. If the flickering disappears now, it is most likely an interference caused by something in the original location. Check for devices which can cause interference.
    3. If the flickering persists, check the setup of your system. If available in the setup, make sure that the option Monitor Type is configured as Colour Non-Interlaced.

Dec 24, 2007 | E-Machines E17T 17" Flat Panel LCD Monitor

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