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Monitor flicks? Turns off then on? Not sure


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9 replies to this topic

#1 samuel3

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Posted 02 August 2011 - 05:18 PM

Hi. My monitor like switches off like 0.5 of a second and goes back on it says D-SUB at the top right. Why? Could it be to do with my screen resolution or graphics card?

When playing music/Audio it all stays on maybe because I have separated speakers.

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Edited by hamluis, 18 August 2011 - 01:03 PM.


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#2 Larry D. Lawrence II

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Posted 03 August 2011 - 12:38 AM

OK my friend I will be happy to help but I need a little clarification.

What kind of system?

what OS?


What Monitor Make/Model?

IS it hooked up by VGA, DVI, or HDMI?

When playing music what stays on the monitor or the computer? or is it both?



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#3 samuel3

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Posted 03 August 2011 - 07:56 AM

Was Windows Vista

Installed windows 7 on it.


Model name: MW19H-AAAD
LCD Monitor

Vga cable

I have usb speakers the audio still plays I haven't tested it with using the speakers from the monitor but I guess it will stop if the monitor turns off then on.

It only turns off randomly there isn't a time difference.

#4 HiroPro

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Posted 06 August 2011 - 11:23 PM

Are you sure the monitor turns off? Be sure by checking to see if it's power indicator light is still lit. If it is then the issue is the bulb that provides light through the LCD panel. If you have another monitor I'd try that first. Test to see if it's related to the monitor before moving onto the PC. A lot of monitors have the ability to switch inputs. Perhaps you have switched yours to DVI when your're using D-sub VGA?

PS if your video card and monitor support DVI I would purchase a DVI cable as it will provide much better picture on your monitor than an analog D-sub VGA connection.

Edited by HiroPro, 07 August 2011 - 03:05 AM.


#5 samuel3

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Posted 07 August 2011 - 03:51 PM

Using Vga Cable in a VGA slot. The little light stays on.

#6 HiroPro

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Posted 07 August 2011 - 05:22 PM

Using Vga Cable in a VGA slot. The little light stays on.


And your certain the monitor is set to the right input?

OK if this is the case then the problem is in the monitor. Do you have the ability to test the monitor on another computer? If it again doesn't show an image (or doe so for an instant) and your on the right input and it shows it's turned on via the power indicator then one of two things is damaged/failed in the monitor. It's either the CCFL light bulb that provides light through the LCD or the "ballast" that is used to drive the bulb. If it's the bulb then it's a cheap fix if you are capable of repairing electronics. If it's the "ballast" or inverter that drives the bulb then your in for an expensive replacement part for the monitor. In fact it's the most expensive component in a LCD panel these days. The unit is now destined for a land fill/recycling.

Edited by HiroPro, 07 August 2011 - 05:25 PM.


#7 HiroPro

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Posted 07 August 2011 - 05:27 PM

75% chance it's the CCFL and 20% chance it's the inverter with 5% left over for damaged LCD driver PCB and/or D-sub socket short/damage.

#8 samuel3

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Posted 08 August 2011 - 04:19 AM

How do I check if its the right input?

#9 abauw

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Posted 08 August 2011 - 05:13 AM

Model name: MW19H-AAAD
LCD Monitor


What Brand is it? Screen Size?

Could you change your Resolution and Refresh Rate?

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#10 samuel3

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Posted 08 August 2011 - 05:25 AM

19 inch. I think its Advent it came with my PC which is Advent but there is no logo on it lol.

Edited by samuel3, 08 August 2011 - 05:26 AM.





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