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I have an ACER AL1714 17" LCD monitor. It turns on but the display is very dark and dim. if you are an inch away from the screen you can still see an image on it but it is very dark. i have had this monitor for 3-4 years. can somebody help me please?

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May be problem with your monitor . You have to service it.

Posted on May 06, 2008

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Very dim display..so dark that all I see is a faint picture. Are bad capacitors to blame?


I would say either the video cable has disconneted, causeing the led that lights the screen up to not function,, simpley take the bezel around the screen, take the small screws aroud the screen to slightley pull the screen away from the back top to see if the cable is, or has pulled loose...If now the screen is bad..

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ViewSonic VA1926w monitor dims darker when there's dark content on the screen. I have 2 of these monitor connected to a Pro Mac. Only the right side monitor does this.


Its the dynamic contrast ratio (DCR) that dims the display when dark images are displayed.
For my VA1926w, pressing the right most button (up arrow), enables or disables DCR. Keep this disabled.
- Shalabh

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Light bulb bad?????


You may have a faulty inverter or a faulty CCFL lamp.

A defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
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www.lcdparts.net

Sep 06, 2009 | Gateway HD2200 LCD Monitor

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Acer screen looks dark?


You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

Apr 23, 2009 | Acer Aspire 5315 Notebook

1 Answer

Monitor dims on a black background hanns G 28


Go into monitor settings and turn "off" X-Contrast. X-Contrast will auto change contrast when backgrounds darkens. However, adjust manually the Brightness and Contrast settings to compensate.

Apr 22, 2009 | Hannspree 28" Widescreen Flat-Panel LCD HD...

1 Answer

Dark monitor screen with hidden display in the dark.


You most likely have a defective CCFL backlight, it may have the following symptom:
  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

Apr 07, 2009 | Acer Aspire 5040 Notebook

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Acer AL1512 LCD Monitor Problem


Hi,

Based on your description, the problem could either be:
  • CCF (cold cathode florescent) lamp; and/or
  • inverter.
Since the Acer AL1512 works fine except dark, we can rule out the video interface, power supply and ontroller. Again, the display showing (even dimly) is significant, it tells us that the components are working except that for some reason and most likely it is heat related. Possibly a cold solder, a loose connection and/or a dried up capacitor. You could actually verify this be shining a flashlight diagonally across the screen and some semblance of the desktop albeit dark would be slightly visible.

What is required is opening the LCD lid/panel to perform repairs. This of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Sep 23, 2008 | Acer AL1512 15" LCD Monitor

1 Answer

LCD monitor display is not appearing


Hi,

It would seem that you are on the right track. If the desktop could be seen (albeit very dark background) then it could either be the CCF Lamps (cold cathode florescent) or the inverter that powers the lamps. One way to verify is to shine a flashlight at an oblique angle to the screen, semblance of part of the desktop could be seen.

Often, the larger the screen, the more the number of CCF lamps. Being a 17incher, I wouldn't be surprised if your Acer AL1714 would have two. Having said that and I am assuming that both lamps are not working, then the common denominator would be the inverter. It is relatively easy to replace the inverted. It is sometimes more difficult and challenging cracking open the casing of the monitor than replacing the inverter. Additionally, inverters are readily available online. It is also not surprising that inverters for other brands/models would also be used in your Acer.

This would be a good place to start for inverter boards. This is a nice tutorial if you are considering a DIY.

Hope this be of additional help/idea to Coolguy's assistance. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

May 06, 2008 | Acer AL1714 17" LCD Monitor

1 Answer

LCD monitor display not working


The problem you have is with the backlight lamp, which is not turning on. When this happens only because lamp is faulty, Acer LCDs have a security switch that will not turn the screen on at all and will return a blinking light on power on led , as diagnostic feedback.
If you have a dim light it sometimes means that the bulb is still ok, but is not working. This often happens because of a faulty capacitor on inverter, which is powering the lamp.
Although the above symptoms are typical of a faulty inverter, a faulty power supply, lamp, or A/D board can produce the same symptoms.
It's also possible that an inverter could have been damaged by a faulty lamp. If faulty lamp is not replaced before refitting the repaired inverter, in time, the inverter will fail again.

Best thing to do is taking your lcd to a local TV repair or computer repair that works with lcd (ensure they work proficiently on lcds , some of them doesn't), to test if it is the lamp or a faulty component on board. If possible find a shop giving you some warranty time, as, if there is more than one problem the LCD can fail again in few days.

Regards

May 06, 2008 | Acer AL1714 17" LCD Monitor

1 Answer

LCD monitor display not working


To correct this issue in Acer LCD's you will need to have a series of capacitors replaced. If you understand electronics then it's not hard to find and replace the bad ones. Though I do advise to replace the lot since your already in there.

If you don't have a good understanding, then get your local TV tech to take care of it. The parts are cheap, it's the labour that will cost you the highest part of the bill.

May 06, 2008 | Acer AL1714 17" LCD Monitor

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