Question about Acer AL1714 17" LCD Monitor

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LCD monitor display not working

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 it be the inverter, lamps or back light? thank you very much.

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  • Acer Master
  • 19,396 Answers

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

Posted on May 06, 2008

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Posted on Jan 02, 2017

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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.

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