Question about Acer Aspire 1710 Notebook

2 Answers

Backlight fluorescent lamps died

About after 1.5 year one lamp died in a month the second one.
What I can do with this problem?

Posted by on

  • dank84 Jan 30, 2009

    Backlight lamp no longer working in my acer 1710 laptop. Is there any way to replace or fix this issue?

  • Justin Case
    Justin Case May 11, 2010

    Hi there ego,

    You didn't mention in your post, so I need to ask: What is your level of expertise in the diagnosis and repair of Notebook Computers?

    I ask because after thirty years of programming in thirteen languages, being an expert in the operation, maintenance, diagnosis and repair of data processing machines ranging from mainframes to PC's, I have only the most cursory knowledge of the problems specific to laptops and notebooks.

    They require additional training. Often training is geared to specific makes and product lines.

    That knowledge I do have was gained by repairing my own company's laptops. The first thing I learned was this was the training I mentioned was absolutely necessary.

    Experts
    here volunteer their services. Their only compensation may be the
    satisfaction of helping others and pride in the ratings they receive.

    They freely give you, The Asker, the benefit of decades of experience for exactly zero pay.
    Some people come here looking for a simple fix (press the the Ctrl-F key and all your problems will be solved) when one simply does not exist. Magic 'One Liner' solutions are rare.

    And sometimes in the best interests of the Asker, the best advice is to take your equipment to a qualified technician.

    This advice is given when there is ether a danger of injury or death to an untrained person attempting repair or an attempt to make repairs will result in permanently damaging the equipment. I see that to be the case here.

    So I ask you again, what is your level of expertise?

    If it is anything less than A+ certification with a backround in laptops, I would
    like for you to reconsider the 'Inappropriate' rating you gave Jazzy.

    This
    rating is worst type of insult. It should
    only be used in the rare case that the advice you received was totally
    irrelevant to the problem or outrightly profane in which case should be
    reported as abuse.

    Neither one of these was the case here. Your rating
    of Inappropriate is the only inappropriate response appearing in this
    thread.

    At the very least, he earned a Helpful.

    If you had made the mistake of opening your machine up, then tried to reassemble it after you realized you were in too deep, I guarantee you would have rated his advice a FixYa retroactively in exchange for not having done it.

    You
    blasted a lot of hard work, reduced his rank and the smeared the reputation of someone that was
    not only trying to help you, but was doing it for free. Doesn't exactly make you feel all warm and fuzzy, does it?. I would think this is something you would want to
    rectify.

    Also keep in mind that Experts here pick you, not the
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    is unlikely to be helped by a second Expert.

    That includes future problems too. It depends on you either getting that IA removed
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    You know how to fix it.
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    Good luck and have a nice holiday.
    Mike258



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  • Master
  • 4,234 Answers

This note is primarily in response to dank84:

The "backlight" is built-in to the display panel itself, so there is no way to replace the lamp itself. In most cases, it is the "ballast" that has gone bad. This is a small board either on the side or bottom ofhte top case. There are a number of reasons for this to fail. Many times a bad battery or weak charge can cause extra current draw that pops a soldered fuse on the board. Other times, capacitors fail. Still others, the onboard transformers that convert the "low" voltages to "high" voltages required for the flouresceent lamp to fire go bad.

The bottom line is that this is not a consumer type of repair in most cases. Depending upon the age of the laptop and the skills of the local servicer, this may not be an econimical repair.

Dan

Posted on Jan 30, 2009

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  • Contributor
  • 728 Answers

You will need to get it checked at a shop because you might have a short that is causing too much power to go to fluorescent lamps and is making them die.

Posted on Nov 09, 2008

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First off, it is not a picture tube if it is a flat panel. It is either a plasma or LCD screen. It is possible that the backlight circuit or backlight itself has failed. This is not uncommon on units once they reach approximately the three-year-old mark, especially the units that are backlit with fluorescent lamps rather that LED lamps.

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First if you can, try the monitor with other PC first to make sure it is not the PC problem.

If it behaves in the same fashion, then most probably has dying power supply due to bad DC filter caps, just see the top side of the caps to ensure it has not bulged up distorted.See the images bellow
12_24_2012_5_33_15_pm.jpg OR


12_24_2012_5_34_01_pm.jpg

Then there is the logic board. Plug the monitor in but do not activate the power switch so the backlight inverter circuits will be off. Check the 5vdc and the 12~24vdc to make sure they are OK. They should be tested with the load, you can use 6V 1A (6watts) lamp for the 5vdc, and car lamps such as 1157 (12v 8watts lo/26watts high) turn signal brake lamp using high filament connection for testing the 12~18vdc (or use two 1157 in series for 19~24vdc) for the backlight inverter circuits.
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The backlight inverter circuits:
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Common problems:
Bad filter caps, resonant caps (in the inverter output circuits), blown transistors/IC, shorted or open transformer winding.

If you are confident with your skill then go ahead else go to an authorized outlet for repairing
Do write back if you face any difficulty while working on the monitor

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2 Answers

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Mohammad,

Toshiba Satellite P100 screen Inverter replacement;

1) http://www.irisvista.com/tech/laptops/Toshiba-Satellite-P105-P100/remove-lcd-screen-inverter-1.htm

(You can click on any photo to enlarge it. At the top, and bottom of the page are the page numbers. They are in white; Page1 :: Page2 :: Find another model )

2) Primer:
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A Backlight is the additional light source.

A Backlight (Present technology) is a CCFL, or a series of LED lights.
The Toshiba Satellite P100 series of Notebook PC's uses a CCFL.

Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

Average size is approximately 2mm Thick, and the length is close to the height of the LCD screen. 2mm is a little larger than 1/16th of an inch.

This means the CCFL can be broken quite easily, as it is fragile. (You also DO NOT want to be cut by a Fluorescent lamp )

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

A screen Inverter converts the power from the laptop, for the Backlight, and LCD screen.

As previously stated in a Clarification, 90 PERCENT OF THE TIME the fault is the screen Inverter.

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joecoolvette

(I never request commendations, but thank you for offering.
We, the older techs here, feel that is begging.
3 years at FixYa so far.
Regards,
joecoolvette)

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