Acer AL1917W LCD Monitor Logo

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Anonymous Posted on Jan 24, 2018

Monitor black screen

When I turn the whole system on, the monitor displays the images for about half a second, then turns off (black screen). I have to hit the power button (for the monitor) for about 6 cycles. Each time, I have to wait till the screen appears, then goes black, then on it again till it stays that way.

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  • Acer Master 395 Answers
  • Posted on Jan 28, 2018
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To me this sounds like whats called "bad caps" problem. The capacitors in the PSU have gone out of tolerance and the back light is switching off. If this is the case you will need a workshop repair or if you know how to solder you could replace the capacitors in the PSU for the back light.

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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

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Tmy monitor shows the images only for 20 seconds, then it turns black.

Hi hope your monitor issue has resolved. I would suspect the problem is a hardware issue then a software setting. Since the monitor is over three and half years old, if your monitor is a LCD with CCFL back light and had been used almost every day, there may be 3 possible hardware issues. First is the internal power supply, that can go wrong due to heating problem within the monitor, this problem usually cause the monitor to display poor quality picture and may show interference lines on screen prior failure. Secondly, it may be the inverter that drives the back light, which may fail due to the safety circuit kicks in, because it involves with high voltages. Thirdly it may be the backlight itself, which is like most compact CCFL energy saving lamps that flickers or turn itself off when it reaches the end of its service life. This problem usually caused the monitor to show redness or yellowness images prior failure.

All of these can be resolved by qualified electronic repairers, all the best.

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your monitor got a hardware problem:
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2) if you can see some show like smaller signal detect windows in the centre of screen a very short time (bright flashing one time), this is inverter board damaged or worn lamps, thay all need repair or replace
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