Question about Mag Innovision LT576s 15" Flat Panel LCD Monitor

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Good picture for 30 seconds then screen goes black with a faint ghost of the image

When I turn on the monitor it displays the image perfectly for about 30 seconds during which there is a slight buzzing sound. Then the screen goes black with just a faint ghost of the image on the screen. Once the screen goes black, the buzzing stops. I bought the monitor used (the guy said it worked perfect and had no defects or problems) and it has a universal 12VDC power supply that came with it. The back of the monitor says 12VDC 4.0A so it should compatible. It did not come with a vga adapter so I'm using a replacement shielded vga m/m adapter. I've tried the monitor on my desktop computer and on my laptop with the same results. Same probem. Frank

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1 Answer

The 12V is for speakers.. the 245bw takes regular 120V AC (same cord as your computer)

the buzzing is annoying, though. i don't know if it's a "feature" or just a side effect.. ie, if i could take the case off and poke around, i would. 4 times out of 5 it's some dumb piece of tin reverberating from a transformer or something..

Posted on Dec 28, 2007

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Posted on Jan 02, 2017

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One day it went black, if I turn it off then on I can see a perfect picture for half a second


If this is a LCD monitor, most likely the invertor or the bulb is not working correctly. If you shine a flashlight at the monitor you should be able to see the image. What has happened is the back light is not lit to display the image. If you are handy at repairing electronics you can swap invertor and bulb from the other monitor if they are the same model and size. It may require some soldiering though.

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Screen goes black but sound is good.


This sounds like the inverter which powers the display fluorescent has or is failed/failing. If you take a torch to the blacked out display can you see the image faintly? If so the unit needs repairing.

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I have lenovo g550...my screen flickers in every 5minutes...


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Short Intermittent Display Upon turning on the laptop, the screen flashes on in the normal mode for a short period and then blinks to black. A very faint image appears in a dark background, which will be very hard to see almost invisible. After shutting off the laptop and restarting, the same mode occurs, where the screen appears normal for a few seconds then fades to black. This condition points to a failed inverter. To confirm this, plug in an operational external monitor; if the external monitor functions, the inverter has failed. b> Total Blackout with Ghost image b> The laptop turns on, as indicated by the power supply button, but the screen comes up black. The screen comes up black after restart. You might be able to detect a very dim or ghost-like image on the monitor. When you plug in a known functioning external monitor, the external monitor operates normally. This mode of display indicates a failed inverter. b> Long Term Periodic Operation b> With this failure mode, the laptop screen illuminates normally upon start-up and remains that way after several minutes, hours or even days, until it goes very dark again. Brightness controls or restoration attempts do not work. Most often, the screen will function normally with a computer restart, but will eventually return to black. Faint ghost images might appear, as seen in the total blackout mode. b> Dark With Color Variation b> Upon computer start-up, the monitor shows black or dark gray, accompanied by very faint images. The screen might have an intermittent color change, or remain on with a non-standard color variation, like pink or red. b> Auto Control Switch b> If the screen appears black, with no faint or ghost images, look for the lid switch near the back hinge. The switch, when depressed with a closed lid, shuts off the computer and monitor functions. Sometimes the switch becomes stuck in the closed position, disallowing the computer and monitor to turn on when opened. Pushing the switch manually several times can often free it up. If the switch tab has broken or jammed inside the case, it needs replacing. b> Loose Connection In this mode, the display looks normal upon start-up, but tapping the side case of the computer turns the screen black. More tapping results in the screen functioning normally then cutting out again. This condition points to a loose wire connection from the inverter to the LCD backlight lamp, or the video cable. The connectors can be accessed by removing the monitor bezel screws and pulling the plastic retainer off. Both connectors can be cleaned and refitted.

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Hannspree HF229H will not stay on


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I see many monitor with that trouble.
When you turn on comp., you can have a picture on monitor about 10-30 min. and that go in black screen, or If you change resolution again go in black screen.
You must repair monitor or bay another.

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Screen comes on then goes out in 5 seconds. The backlight goes dark but the seen is working, just can't see it. The backlight is out...


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Oct 07, 2009 | Dell E152FPc 15" TFT LCD Flat Panel...

1 Answer

When I turn on my computer and monitor, the monitor display is on for about 30 seconds, then goes black. The computer is on, the green light is on, but nothing on the screen.


get a bright light or torch and shine it on the screem if you see any faint image then the problem lies with your backlight, sometimes connectors come loose and thats your best hope. if you have a warranty of any kind its time to use it.

Sep 28, 2009 | Mag Innovision LT776s 17" LCD Monitor

1 Answer

I have a FPD 1830 flat screen monitor not displaying picture


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Jul 08, 2009 | Gateway Computers & Internet

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My monitor keeps going to a black screen a coulpe of seconds after being turned on


Video (picture) must be constantly entering a monitor for a monitor to continue to display a picture after it self tests (goes on for a second or, two) Your monitor is fine; check it using another known good computer.

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Good picture for 30 seconds then screen goes black with a faint ghost of the image


i hope the problem will be in LOT of the monitor...you need to replace the LOT

Jun 14, 2007 | Mag Innovision LT576s 15" Flat Panel LCD...

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