Question about Polyview V17E 17" LCD Flat Panel Monitor

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Monitor is blank

Hi, my LCD displays nothing. It is plugged to the power and has blue led turn on and green led on the power supply but no display, nothing, simply black screen. At first I thought it is because of the VGA, but then when I projected from laptop also nothing. Please help, so lost...

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  • Anonymous Jun 30, 2008

    Hi, my LCD displays nothing. It is plugged to the power and has blue led turn on and green led on the power supply but no display, nothing, simply black screen. I bought it in november 2005 and It was working find until this. According to the solution already proposed, I guest I'm f*****

    Thank you so much for this wonderful solution!
    (I know it's not your fault but I'm pissed!)



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This looks like a power supply problem panel can be uncliped and the power supply module withdrawn. look for any bulge in the capacitors and unsolder replace them. With the same type and rating. Cheaper than replacing whole unit. In fact replace all capacitors. Not that hard. :)

Posted on Sep 01, 2008

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You either have a bad inverter board in the unit or a lamp problem, also there are known issues with these units having bad capicitors in them. It is more fesable to replace it then repair it sorry :-(

Posted on Sep 15, 2007


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Posted on Jan 02, 2017

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I have the VE278Q which is connected by display port, every time i turn off my computer and then turn it back on the monitor can't be found, I have to unplug the display port cable, unplug the monitor,...

when you say monitor can't be found did you mean the monitor has no reactions when you turn on your pc?

here are some test you may need to do to know which part is faulty
1. Turn on your computer, did it display the monitor's logo on screen? When it does monitor is good, when only blank screen it could be the vga cable or the video card.
2. See if the led indication lit. When it lit to steady green, it's good signal is coming in from the video card. It should be followed by screen display. If no display it could be the backlight inverter lamp busted or faulty inverter board. When lit green then turns red, no signal coming from the video card. Check vga cable if fix properly to both monitor and video card. Or may need to reseat properly connection of video card from the motherboard. If no led indication lamp, then monitor is dead. Check ac power cord for continuity using multitester. Check power supply section in the monitor, replaced bulged or blown capacitor with exact value, this components were the first to get affected when lcd monitor failed o turn on.
3. When computer was turned on got display and then monitor turns black, go check the vga cable, Fix the connection properly or may need to replace it with new one.
4. When no signal appears or display blank screen after logo, then check video card. First remedy is to disconnect it the reseat properly to the motherboard. If this have no effect change your video card.

go follow these steps and let me know which is closely to your problem so I can give you a good advise.

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Monitor Display Problem.

The first Polyview has a power supply problem (a short) and locks out the power until it is unplugged. You need to check the voltages inside the Monitor to determine which component/s are faulty. I hope you know electronics if not leave it to the repair shop because you have neither the skills or equipment to repair it. By the way I am not a monitor repair man but I do have 30 plus years in the electronics field.
The second monitor may have a broken wire in the cord that goes to your computer. Other internal components can cause the same simptoms your seeing. Good luck!

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1 Answer

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Same as before this sounds very similar to the problem that I had with my polyview v396 19" . Its a power supply problem unclip the panel withdraw the power supply it plugs in on its own seperate board. Look for capacitors that bulge and replace them in fact replace them all on tha board not that hard. Replace them with the same rating voltage and micro fards. Cheaper than relacing the whole panel, hope this helps. :)

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Like most of these LCD monitors it is more than likely a PSU problem to do with the Electrolytic Capacitors, These in all probability will be faulty.. there are usually about 4 - 6 from 1000uF to 100uF replace ALL with same or better.

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