Hello hows it going.
Coolguy008 told me to seek you out for assistance. My question is in
regards to my LCD monitor. I have the Acer AL1714 17" model. When i
turn my monitor on the green light appears and everything boots up
fine. once i am at the log in screen it is so dark, very dim to see
anything but if i you were to look an inch away from the screen, you
could vaguely see what is being displayed. The image is only a little
bit noticeable in a right degree of light. I would like to know what
could be the problem to a very dim screen. It works fine, but can the problem be the inverter, lamps or back light? In advance thank you very much.
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Re: LCD monitor display is not appearing
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.
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This can happen if your display resolution settings in windows are set higher then your monitor can support. The display is meant to be set at 1024x768. You can set this by going into the control panel, select display. You will find the option to set the resolution in there,
Hello. That message appears when the video signal from the computer exceeds the monitor's ability to display it. If the sync is set too high(i.e. max sync on the monitor is 60 Hertz at that resolution), you will get that message. Check the video settings in control panel--("appearance and themes" in XP), go to the "advanced" tab and look at the refresh rate. Most computer video cards are able to far exceed a monitor's display ability. Don't exceed 60 Hertz--check the users guide for specs--the lower resolutions can have higher refresh rates(useful in games) Sometimes, a little lower video quality can yield a big performance difference in the display because the screen can update itself faster. (I use a radio control flight simulator pgm that is heavy on video ability).---Hope I was of assistance!---Rick
Most probably failure in the LCD controller IC in the lcd controller board. that no signal was sent out to the lcd driver ic thus you could only see white display on the screen. A replacement of LCD panel might be the solution. regards
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.
Sounds either a backlight problem (inverter or tube light) or the display interface.
Since you have confirmed that it is your LCD monitor, your best bet perhaps is to seek the services of a qualified professional.
Should you venture in doing it yourself (DIY), You need to open up the casing. A step by step procedure is better illustrated here .
The working principles of notebook/laptop displays are nearly identical to your LCD.
Hope this be of some help. Post back how things turned up or should you need further information.
Good luck and kind regards.