Question about Mag Innovision LT782S 17" Flat Panel LCD Monitor

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Monitor does not power up, only clicks through speakers

The monitor will not power up. When plugged into power it will not show any lights, but the black screen "flicks" every second and the sound clicks at the same time. Not sure what is going on...

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  • PARTSGIRL Mar 12, 2008


  • Anonymous Mar 03, 2009

    Me too



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  • Master
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There is some issue with the power board internal to the monitor maybe capacitors, maybe transistors, that is the best i can do with your info.

Posted on Mar 25, 2009


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the power transistor on the SMPS of the monitor is blown,
you will need a skilled person to diagnose and replace the component

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Hcm 582 monitor not display show

1. Verify the monitor's power cord is plugged firmly into the wall outlet and the back of the monitor.
2. Verify the monitor cable is firmly connected to the computer and the monitor.
3. Verify that you have turned the monitor power switch on.
4. If the power light on the monitor is not on, test the wall outlet (plug in a light or something you know works).
5. If the power light on the monitor is not on, try a different power cord.
6. If the power light is on and yellow or flashing, but nothing displays, borrow a monitor from a friend. If that works, your monitor probably needs replaced.

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No sound and video

Video issue:-

Assuming the system power comes up, does the monitor power come on? Most monitors have a status LED on the front bezel that should show green, orange, or blinking if the monitor is powered on. You can hear CRT monitors power on with a gentle sound, though I can't describe it beyond saying it's the sound of a CRT tube warming up. Make sure the monitor is plugged into a good outlet by testing the outlet with a lamp or any other device that will prove beyond a doubt that the outlet is good. Make sure that the power cord is either permanently attached at the monitor end or that it is seated fully in the socket, since partial cord insertion is the most common failure for monitors with detachable cords.

LCD displays don't make any sound when you turn them on, but they don't have a simple power cord, either. Older LCD monitors are usually powered by an external transformer, which in turn is powered from a regular AC outlet. If the LCD display doesn't show any signs of life, make sure that the cords into and out of the transformer are fully seated. Some transformers are equipped with a status LED to show when they are operating. The power connection to the LCD display is often awkward to inspect, recessed into the back of the display. The important thing is to make sure it is started correctly, then seated all the way.

Sound issue:-

No Sound From all speakers
  • Check that the speakers are powered on.
  • Check that the speakers are connected to the correct ports on the PC. This is particularly important If the customer has both integrated sound and a sound card.
  • If the speakers have a volume control button - ensure that this is turned up.
  • Check that the Windows Audio service is running. If this is not running then many of the subsequent troubleshooting steps will not work. Go to Start->Run and type services.msc. Double cliick on Windows Audio. Select Start if possible and check that the Startup Type is Automatic. Click OK.
  • If the speakers are digital speakers then try forcing the sound card to use digital. Go to Start->Control Panel->Sound and Audio Devices.. On the Volume tab, click the Advanced button in the Device Volume section. In the Volume Control window, below the Play Control Volume slider, click Advanced. If this does not show select Advanced Controls from the Options menu. Select Digital Output Only
  • If possible try an external audio source like a Walkman, CD, or MP3 player (connect the speakers to the headphone jack)
  • Check that the volume control in Windows isn't muted or turned too low. See the screen shots below. Go to Start->Control Panel and double click on Sounds and Audio Devices.

Aug 06, 2010 | Computers & Internet

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My fathr gave me a hp f1703 monitor. As soon as i plug it in the whole screen flashes on and off. The light on the power cord also flashes, but if i unplug the monitor and leave the speakers plugged in the...

try another monitor i re placed my cord and the graphics card and it didn't do me any good i replaced the monitor last and it works fine now. and my speakers pluged into the monitor the monitor i bought didn't have the port for speakers so now i need to get usb speakers so check it out. hope this helps

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No place to plug in my speakers

Monitor plugs in 3 times?

1] power 2] video 3] sound???

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No sound through external speakers

Although some monitors have built in speakers, most people have stand alone speakers. If the old monitor had built in speakers and now it is unplugged you won't hear sound. Even if the speaker cable is still plugged into the sound output on the back of your computer, the monitor must be plugged into an electrical outlet to have power.

I'd recommend buying a new set of external speakers if this is the situation.

If you never had speakers built into the monitor then normally changing monitors would make no difference whatever. The only explanation that makes sense under those conditions is that in the process of replacing the monitor, you dislodged the speaker jack from the sound output on the back of the computer.

Make sure your external speakers have electrical power plugged in, the power is on (green light on at least one speaker lights up) and the volume on the speakers is at least half way up.

Unplug the speaker from whatever hole it is plugged into and plug it firmly back in and test sound.

If still no sound other than some static on the speakers, try every single hole on the back of the computer that the jack will fit properly and test for sound.

Let me know if you have further questions.


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My LG Flatron L1511S 15 in. Flat turned into Power Saving mode when I plug in serial cable!

if the monitor showing powersaving mode, monitor is ok. It must be your CPU complaint.

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Monitor comes up shows "acer" then says no signal and goes black

1 Take the monitor out to the street
2 Raise above head
3 Hurl it twards the ground
4 Release
5 Watch peices fly everywhere
6 Enjoy a cold beer
7 Go out & buy a nice new monitor ( not a acer product )

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