Question about Acer AL2671W 26 in. LCD Television

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My AL2671W swit5ches off the backlight before the

My AL2671W switches off the back light before the Acer splash screen closes and won't come on any more until I restart the TV and the process repeats.I found one swollen cap on the main board haven't tested the others for open circuit or short.

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I read many postings on this matter and found the solution. Thanks for following up. Kind regards Hans

Posted on Oct 04, 2009

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Posted on Jan 02, 2017

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Screen won't come on


There are a couple of things that it could be , 1, A loose ribbon cable in the back of the monitor, due to a drop, bang, jar, etc. 2, There is a tiny switch the controls the backlighting when you open and close the lid of the laptop, it will stick due to dust, dirt, or hinges being loose or damaged. 3, Your backlighting has quit altogether. If you can see a "ghost image" on the screen in a bright light, it's the backlighting or switch. If you see nothing it could be the switch, loose connection, or the monitor is out. It's difficult to say exactly without troubleshooting the problem.

Nov 29, 2012 | Toshiba Satellite L305-S5921 Notebook

2 Answers

Back light sometimes works


If your laptop appears to boot up and the hard disk LED flashes, then the problem is probably a back light fault. This can be a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Nov 10, 2012 | Acer Aspire As5250-0327 320gb - Perfect...

1 Answer

White screen but plugin monitor works. is it the screen?


http://support.acer.com/acerpanam/notebook/0000/Acer/Aspire5100/Aspire5100sp2.shtml

http://www.laptopscreen.com/English/model/Acer/ASPIRE~5100/

So you PHYSICALLY checked the connection of the Video Cable, TO the motherboard, TO the screen Inverter, and TO the back of the LCD screen?

Visual inspection will NOT do. If either motherboard connector, or LCD screen connector is loose, the width of this letter -> I < you won't see it, and it will affect the video signal.

The Video Cable connects to the motherboard under the Middle Cover, above the F4 and F5 key on the Keyboard. (Left edge of F4 key over to middle of F5 key)

[Middle Cover is Acer speak for Switch Cover. The cover strip above the Keyboard, and below the LCD screen ]

aspire-3100-5100-5600-lcd-cable-dc020007o00-.html
http://www.laptops-we-r.com/prestashop/aspire-5100-parts/109-acer-


Click on the view to enlarge. Top left side connects to the LCD screen. Rectangular Black connector with thick round cable, at the bottom, connects to the motherboard. Small cable coming off at the bottom, connects to the screen Inverter ]

From the motherboard connector the Video Cable routes up under the left Hinge, and into the Display Assembly. It then connects to the screen Inverter, and LCD screen.

From normal opening, and closing of the laptop, repeatedly, the Video Cable may become pinched.
This can lead to loose connections.

It can also lead to damage of the Video Cable.
If the sheath of the cable shows apparent signs of damage, the tiny wires inside may be damaged also.
Stretched/Broken

This means to ENSURE that the Video Cable is NOT the problem, a continuity test needs to be performed on all of the Video Cable's wires. (OHMS)
If an economical multimeter ($5 to $12) is not available, suggestion is to take it down to the nearest 'Mom and Pop' computer store, and have them check it. Labor charge should only be a few bucks.

Video Cable checks out it's on to the screen Inverter, for the diagnoses.

[NOTE*
This diagnoses is for an Acer Aspire 5100 Notebook PC. Uses a single (1) CCFL for a Backlight, and has a screen Inverter. Laptops that use LED's for a Backlight generally do not use a screen Inverter]

Did you test the screen Inverter, or replace it?

http://www.amazon.com/Acer-Aspire-5100-Inverter-PK070005U00/dp/B005F1N5O2

http://www.fonerbooks.com/test.htm

NOTE*
Takes a sensitive multimeter. Read fairly expensive.

Primer;

An LCD screen cannot produce light by itself,

http://solutions.3m.com/wps/portal/3M/en_US/NA_Optical/Systems/BehindTheScenes/Optics101/

Click on the monitor. Suggest start out with your audio turned down ]

It needs an additional light source.
A Backlight is the additional light source.

A Backlight can be a CCFL, (Or two of them), or a series of LED's.
(Light Emitting Diode)
The Acer Aspire 5100 Notebook PC uses a single (1) CCFL.

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

[Average thickness is 2mm. That is a little larger than 1/16th of an Inch.
Average length is almost as long, as the LCD screen is in height,

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

A screen Inverter is used to convert the power (Electricity) from the laptop, for the LCD screen, and Backlight.

90 PERCENT OF THE TIME the fault is a bad screen Inverter.

Primer over.

If the screen Inverter is good, the LCD screen is bad.
Replace.

[The LCD screen, and the screen Inverter are a MATCHED unit.
When purchasing make sure you get the correct screen Inverter, or LCD screen ]

For additional questions please post in a Comment.

Regards,
joecoolvette

Sep 09, 2012 | Acer Aspire 5100 Notebook

3 Answers

I have a AL2671w LCD Acer TV ON OFF switching


looks like the same problem i have with my 32" acer tv, it seems to be a problem of acer TVs get someone to check the capacitors in the power supply.... I think one might be bad.

Dec 05, 2009 | Acer Televison & Video

3 Answers

Acer flat screen tv - sound no picture?


Acer AL2671W 26in problems: (1) sometimes sound but no picture, (2) or screen freezes pink etc. (3) or remote won't turn it on/off (4) or it gives up and says "no signal". Turning it off/on usually solves it temporarily.

Nov 17, 2009 | Acer AL2671W 26 in. LCD Television

1 Answer

Main PCB spare for Acer LCD TV monitor


I have a main pcb from my broken lcd acer al2671w email if interested I can ship it to you swat203@gmail.com

Oct 18, 2009 | Acer Computers & Internet

2 Answers

DIM SCREEN


It can be the inverter, or the backlight, ar also the switch that de-activates backlight when you close the laptop.

Read here : LAPTOP MONITOR SCREEN VERY DIM OR DOES NOT ...

Oct 16, 2008 | Computers & Internet

2 Answers

Acer AT3201W LCD TV


I repaired my Acer by replacing the power supply from
http://www.power-on.com/lcd323-4m.html - $85

Acer would not sell me a replacement power supply.

Note: I needed to solder wires the new power supply to the old one,
the pinouts on the connectors on the new one would not fit the original.


Sep 08, 2008 | Acer AL2671W 26 in. LCD Television

1 Answer

Green light but can't turn it on: AL2671W


Sounds like the problem is either the LCD itself or the connection from the circuit board to the LCD. The light comes on, so power is available. The internals of the TV are all solid state (on a circuit board). Because of this, I would not attempt a repair unless you are familiar with electronics and soldering. There could be many problems. I would see about getting an estimate from a local TV repair person and see if they will tell you what exactly is wrong. Also, I would unplug it and open it up to see if there are any loose connections...however, be careful because if there are any capacitors in the circuit, you can get shocked. While inside, look for loose connections or burnt/discolored components or wires. This will give you an idea of the problem. Probably easier and cheaper to **** it up and buy a new one, but you never know...

Jun 22, 2008 | Acer AL2671W 26 in. LCD Television

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