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Posted on Jan 23, 2010
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My monitor turns off a few seconds after turning it on. The power button stays lit but the screen turns black.

1 Answer

Bud Martin

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  • Master 11,361 Answers
  • Posted on Jan 24, 2010
Bud Martin
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Joined: Oct 24, 2009
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The power can be bad caps in the power supply or bad inverter circuits, start taking the back off first and look inside for bad caps first and report back, see example of failed monitors here: http://s807.photobucket.com/home/budm/allalbums

5 Related Answers

A

Anonymous

  • Posted on Aug 26, 2008

SOURCE: monitor goes black 1 second after coming to full screen

I have 2 systems with the FPD1500 monitor. They worked fine until I applied

SP2. After SP2, they will not start. They come on OK, display the Windows

XP splash screen and then go into sleep mode when the system starts the

proper display mode before the Windows XP login screen is displayed. If I go

into safe mode and uninstall the video adaptor and restart the system, it

will start properly. After it comes up, it finds the video adaptor and

installs it and the session proceeds OK. I can reset the resolution and

number of colors to 1024x768 and Highest (32 colors) and things look fine.

However, when I restart the system, it hangs up after the Windows splash

screen and the monitor goes to sleep.



If I put it into VGA mode, it will come up OK. But once I change any

resolution or number of colors, it imediately goes to sleep.

I would appreciate any help you could offer.

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A

Anonymous

  • Posted on Oct 18, 2008

SOURCE: fp5315

Hi I have similar, I'm an electronics engineer and took mine apart only to find the power supply is very sick to the pint the pcb that converts all the signals probably has been damaged too, ie BIN FODDER.

Not very constructive but at least I know what is wrong - if I can get any constructive info i willl post it....

Anonymous

  • 34 Answers
  • Posted on Feb 08, 2010

SOURCE: ACER AL1914 LCD Monitor goes black but green light stays on

The monitor is doing a self test a finding an error.
The lcd has three parts, the screen plate(windows)/the logic(vga)/the inverter(power plug). Parts that go are the backlight ccfl's, behind the plate, and parts of the inverter, ie capacitors, all three take a bit of power from the inverter. The self test check that all the lights are ok and the inverter is ok, else it switchs off, ie if 3/4 light work it will switch off(my own case), hence the on chech error then off, However sometime there are stages of on/off ie on/ but no screen display, if that is the case the following may be of help...if you put bright light at an angle close to lcd can you see a windows shadow, text icons etc, ie still logic power passing,then .... (from a.n. other) after two weeks searching I finally find doctor living stone http://www.aplusperfect.com/articles/lcd_capacitor_repair more fun with paulbtorrent
the takening the case bit off is like opening your wallet a second time after buying a new LCD, but you must! smallest two screw driver's flat headed, practice using two pennies stuck together()with your fingers after, one little () move and inch and {} again, with the case , it does not break, just need to lever open
[once open you realize they somehow put that old briefcase clip inside!] also note the bright light test to do first to see if can see a windows screen , and that capacitors are one for a number of things that a make a inverter work! there a transistors as well, given that however, to replace all the capacitors on my inverter, was 11 capacitors, cost me $11 (uk ebay) and already had the iron and solder. So only cost me me $11 to try and see but no luck , still fun and I still can see the screen for 2 sec' at a time plus I have a spare set of caps now in the event that the new one do go burst! you have to laugh really, what next , a new on/off button, as you work though the whole inverter mmmMMMMmmmMMMMmmmMMMMTim Berners-leeMMMMMmmmmMMMMMmmmmcome back all is not wellMMMMMMMMMMnnnnnnweek later land sight mmmmmMMMMMMMMMmmmmgggggggg(from
another a.n other)Generally, if the screen went out quickly, it was the inverter. If it went out over a slow period of time (flickering etc..) I would bet it is the lamp.replaceing the lamp should be pretty challenging. as that requires complete breakdown of your LCD, extraction of your dead lamp, and soldering in your new lamp... but I would like to say that I it did this after realizing it's 2 x kitchen strips inside [========] with wires that can connect back to the inverter with out any desoldering(ie kit assembly/dis) with the outter case remove (glass plate safe away) I could reconnect and see that 3/4 were working (i!i hardcard ) cause the inverter to switch off after a secound ! order bult and replace and going
to cheap and see if I can get away with fitting a 15" in my 19' as it a 1/3 of the price ! the market as drop out there, hope the inverter does not miss the length, or the screen out put.http://www.lcdparts.net/howto/troubleshooting/LaptopCCFL1.aspx OR MONITOR

Anonymous

  • 1561 Answers
  • Posted on Apr 22, 2010

SOURCE: when i turn the monitor power button on monitor

Hello,

The picture board on your monitor is bad, since it goes black after three seconds, it means the picture board of your monitor has developed fault.

The best thing for you to do now is to take the monitor to a local repairer within your vicinity or any service center to help with the replacement of the picture board because the fault is not something you can fix yourself, in order not to complicate issues.

Take care.

budmrtn

Bud Martin

  • 11361 Answers
  • Posted on Jul 15, 2010

SOURCE: HANSOL MODEL H750 MONITOR. WHEN I TURN POWER ON,

If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

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Fp5315

Hi I have similar, I'm an electronics engineer and took mine apart only to find the power supply is very sick to the pint the pcb that converts all the signals probably has been damaged too, ie BIN FODDER.

Not very constructive but at least I know what is wrong - if I can get any constructive info i willl post it....
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Black screen

Try pressing the 3rd button, as it toggles the Analog or Digital inputs...
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