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...
This looks like a power supply problem panel can be uncliped and the power supply module withdrawn.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. :)
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Re: Monitor is blank
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 :-(
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Have you tried checking with another monitor. Meaning that if the second monitor does not come on then the problem is with your computers mother board. But if the monitor other monitor you check it with comes on then of course it is your monitor.
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1) if yours LED power on and display of window not giving then problem from cpu.
a. first replace yours RAM and check display.
b. then display cable and check display.
c. Install new Display card and check display, if not giving display it means motherboard have a problem
2) LED not giving power on then problem from monitor
a. replace monitor power cable and check display
b. monitor logic card have aproblem
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.
First place to check will be the power supply section, look for bad caps with bulging top first, post back what you see so we can guide you more, see example of failed monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums
Hi , The monitor flicker problem. The monitor when turn on will display image for couple of second then turn black. The monitor status led is still green. This will happen each time it is turn on. The symptom at appear to come from the inverter board.
Can I assume (?) you re-tried firmly checking each cable connection and the power supply is soundly in place including checking the fuse in the plug That's all I can suggest as the things I would do if in your shoes.
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!
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. :)
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.