Question about iiyama Vision Master Pro 450 Monitor

7 Answers

Screen stays blank

First of all my Vision Master Pro 450 used to work fine but isn't the youngest any more. Nowadays I have a problem turning it on. The green power light comes on for a second, then goes black again, without the screen actually ever lighting up. If I try again immediately the green light doesn't even come on, but if I try a minute later it does again. Sometimes with the result that the monitor actually starts to work, but often the power light just goes black again. When I have the monitor working, I seem to be able to turn it off and on without any problems mostly. Until I shutdown for the night and face the same problem the next morning. It feels a bit as if there's a capacitator that needs to be charged to boot up the screen, but can only deliver the desired amount of power in some lucky cases these days, though I don't know if there's actually such a component used in turning on the screen.

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  • bob de vis May 27, 2006

    First let me thank you for your reply.

    I have tested a different monitor on my computer (no problem) and my monitor on a different computer (same problem). So it definately is the monitor. Guess I'm in for a new one...

  • lodeweeg May 17, 2008

    hello, i have the exactly the same problem but with a vision master 502 of IIyama. When i turn the monitor on the green power light lits for a second and then goes off again without the monitor ever being turned on. If i try again, nothing happens at all. After a few minutes the result is equal as the first time, only a short green light. I also thought about a condensator. Did you had any luck with your monitor or did you just bought a new one? P.s. the problem occurred at once after never having a problem what so ever with this monitor.



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I'm seeing the same problem as the original poster. that delaying the power-on helps, seems to be related to the video mode - it fails in the vga text mode the bios boots up with, but works fine with the later activated graphics mode. switching to text mode later works just fine.

the explanation with capacitors seems strange to me. i think the cause is the protection circuit in the PSU being triggered due to temporary overload (real or misdetected) when the device is cold. what the *root* cause is, i dare not speculate.

Posted on Dec 05, 2011


The original poster is spot on in his assumption. The small value capacitors need replacing on the PSU board. Not a nice job, but my monitor has been fine in this regard since I did it 4 years ago.

Posted on Aug 18, 2008

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I used Frezze Spray on the Monitor Control PCB Inside the monitor and it stays on for a short time. When it heat uop it shouts down. The LED is also off?! I have tried this monitor on Differant PC'S and it has ther same problem?! I will try to Isolate the Problem Compontent or Components. more to fallow. Does any one have a service manual for this unit HDS RADF-5

Posted on May 16, 2007

Ihave cooled the PCB with Frezze spray and the monitor come back on.

Posted on May 16, 2007

Same bug for me if the computer goes to sleep at night, it may not wake up. I finally found a way to get it working : I shutdown both computer / screen. Then, I first run the computer, wait 30s and turn on the screen. Hope it helps.

Posted on Jan 24, 2007

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Yes, a new monitor is on order. Try hitting it on the side or top. that worked for my 17 year old monitor until it completely died.

Posted on Jan 21, 2007

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Hi: For me it seams that the problem is on the graphic board that doesn't have enought energy to send information to the monitor. I sugest that you try another graphic board or another monitor on the same graphic board. ;) Regards

Posted on May 23, 2006

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SOURCE: 19" Iiyama HM903DT A Vision Master Pro 454 not detected

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Posted on Nov 10, 2009

SOURCE: Hi, I have a IIyama

Maybe this link has the answer that you need! I have the same problem with a LCD monitor

Posted on Mar 20, 2011

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