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RGB NO INPUT SIGNAL - Computers & Internet

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  • SHAUNMURTON Jul 12, 2008

    JUST TRIED THIS - WHEN I UN PLUG THE 15 PIN CABLE THE SCREEN SAYS - SIGNAL CABLE DISCONECT! AND WHEN I PLUG IT BACK IN THE MASSAGE COMES UP WITH RGB NO INPUT SIGNAL AND THEN GOES OFF AFTER A COUPLE OF SECOND WITH THE MONITOR BLANK AND IT GOES INTO STANDBY MODE ( THE MONITOR )

  • SHAUNMURTON Jul 13, 2008

    LCD MONITOR MODEL: F159 INPUT 100-240v 50/60HZ 1.0A

    (DIXONS)

  • bumpscott May 02, 2009

    i switch my pc on and it comes up with no rgb signal then goes to standby can you tell me why and how to solve it please

  • Anonymous May 04, 2009

    i have exactly the same problem, just cant seem to be able to do anything about it

  • Anonymous May 06, 2009

    my computer just shuts off and then after getting back a signal comes up with no rgb signal then it cuts off again

  • Anonymous May 26, 2009

    The PC turns on and beeps. and the screen turns on. after about 2 seconds the screen goes black with the message "RGB no input signal" ive checked all the plugs and nothing is loose or missing.

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  • Master
  • 1,498 Answers

Hi,

RGB stands for Red Green Blue. Your monitor isn't getting a video signal.

First, look behind your PC.

Pull the video plug and check the pins.

The should be three rows of them. Make sure none of them are bent over.

On the back of the PC, look at the connector socket you just pulled the plug out of. Is there another like it? (15 holes, 3 rows of 5)

If so and the original doesn't work, switch the plug to the other.

Put the plug back in and screw it in tight.

Reboot your PC.

Hope this helps,

Mike

Posted on Jul 12, 2008

  • Justin Case
    Justin Case Jul 12, 2008

    Does your monitor have a multiple input option?
    Look at the back of the monitor:
    - Is there a row of five BNC (coax half twist) connectors?
    - Or a second VGA (3 rows of 5) connector?
    If so, there should be an input select either a button or on a menu.

    - If there is just a single cable coming out of the back - then no.

    Back to the VGA connector in the back of your PC.

    Is it a separate VGA card or part of the motherboard?

    If it's a card, it may be loose. Did you notice any play in it when you plugged the monitor back in?

    Some testing:
    If you have a second PC and or monitor, you could run a few tests to locate the problem.

    Try your monitor on a different PC.
    If it works, the problem is in your PC.


    • A loose card - Needs to be reseated.

    • A bad card - Needs to be replaced

    • Built in VGA may be fried - New VGA card
    Try a different monitor on your PC

    If it works:
    Your monitor is the problem, most likely in the cable somewhere. Hard to find, hard to fix. If it's under warranty, exchange it. otherwise replace it.


    To be thorough, can you let me know the monitors make/model?

    Hope this helped

    Mike

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If you have a Vizio TV/Monitor (such as the VO22L, etc), try this. With the PC and TV on, in RGB mode, go into the menu screen with the remote (could also be done while in TV mode, if you can't get the monitor to stay on in PC/RGB mode). The far right tab is "Setup". Use the arrow keys to go down to the "System Reset" option. When prompted "are you sure" select "Yes". Power the monitor off and on, and the problem should be gone..

Posted on Aug 01, 2009

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SOURCE: rgb no input signal computor

Have you tried to disable the Power settings? For that go to Start, Control Panel, Power Options and in there put everything to Never, click Apply and OK.
If it happens even after that then the video chip is dying and it will have to be replaced - you will need a new video card.

Posted on Jun 18, 2011

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Posted on Jan 02, 2017

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