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MONITOR NOT COMING ON . RGB NO INPUT SIGNAL .

POWER STILL GETTING TO TOWER ,CHECKED ALL CONNECTIONS , NO DAMAGE TO CABLES , WHEN MONITOR IS SWITCHED ON , THE POWER BUTTON GOES GREEN FOR 2 SECS THEN THE WARNING MESSAGE COMES ONTO THE SCREEN FOR ANOTHER 2 SECS , BEFORE POWERING BACK TO ORANGE COLOUR .

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  • Anonymous Oct 29, 2008

    My monitor turns on for a couple of seconds(light green) the it goes off (light is orange) how do I fix this?

  • pstringall Nov 04, 2008

    power is supplied to both monitor and computer, however I keep getting a "no signal" on my screen and have tried multiple 15 pin D-sub cables without any luck. what is going on???

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  • 348 Answers

You first take post( power on self test) connect power cord & disconnect signal cable you will see massage no signal check siganl cable then problem will be in cpu this problem may be solved by cleaning dust in cpu if montor shows no display then problem will in monitor open it check o/p of smps if not disolder path of eht if o/p comes then eht is faulty replace it

Posted on Oct 29, 2008

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Gateway lcd monitor goes off and on!


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I see on my screen : no signal input.Check video cable.


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Hi, my monitor is displaying a 'no rgb input signal'what do I do?


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Apr 02, 2010 | Computers & Internet

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Hooking up my Sony HD Tv


Couple of items come to mind.
In the menu of the receiver, is there a way to choose video and RGB?
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Check the input being used by the monitor RGB cables is selected on the TV.
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When you power up the cpu check your smps is working?
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but if it not constant on or off no change when you press num lock key then you have to open cpu cabinet.
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While trying to change channels, my t.v. displayed ''no signal'' and then shut itself off. Now, when I turn it on, it says no signal and turns itself off after a few seconds.


Turn the television on and as soon as the screen turns on repeatily press the input button or change the input to whatever input you are using from a source device. As long as you change it to anything other than RGB.

Your television is essentially a big computer monitor with multiple inputs and a tuner. When using your computer and shutting it down the monitor will go in a power save mode. You don't need to shut off your monitor due to this power saving mode. When you power up your computer your monitor automatically turn on.

With the VIZIO and the RGB (computer) input the television will act just like a computer monitor. When you have a computer connected it will power down automatically when you shut off your computer. When you turn your computer on the VIZIO will automatically come out of standby mode. This is through RGB only.

This is normal operation for the VIZIO but can see confusing when nothing is connected to the RGB input. If you change your television input to RGB it will sense no signal on the input and will go into standby mode after about 5 - 10 seconds. If you were to send a signal to the television through RGB it would automatically kick on.

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Nothing comes up on the screen


The monitor connected to the system is set to receive video signals from the DVI port on the video card and it is not getting a signal.

Possible Causes:
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Hi Suzee,

Is the green flashing on the tower or the monitor?

If it is flashing on the monitor, then it might be tht the monitor is not gettign signal from the tower.
To check, disconnect the monitor from the tower and check the monitor. If you get a msg on the screen like no input signal or check video cable, then 99% monitor is fine.

Check for the power supply light at the back of the tower.

Disconnect everything from the computer and then press and hold the power button on the comp for about 30 seconds.

Then connect the cables and check if it is working.

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