Question about Westinghouse L1928NV Monitor

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Backlight suddenly went out; no preliminary symptoms. If you shine a bright light on screen, you can still see the lcd image.

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Open it and take a look on the back-light lamp on the inverter board...if it is smokie and appears damaged..you have to change it ..(if you can get one ..or ..to change the inverter board..
But if the lamp seam ok ..check the fuse on the inverter board ..(it will be a small one near the 12 pin connector) ..and this might be the cause..and you will not have to change the inverter ..or do other invasive operations..
anyway ..t change the inverter will cost you about 50 $ the part ..and the operation is not that complicated and can be done by anyone with a little attention..

Posted on Oct 03, 2010

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Yikes, that is a very bad problem. You are exactly correct in that the backlight has failed. You can get a replacement backlight, but it is a very difficult repair, and the backlight is going to cost at least $70. You can get a brand new screen for only $105 with free shipping and no tax. I would recommend you do this... it will be a much better screen anyway. Also you can sell your current screen on ebay, even with the backlight problem for around $20.. then use the box from the new screen to ship it in and you will be good to go.

Here is the monitor I recommend, the one that is $105:

http://www.amazon.com/gp/product/B00305GYIO?ie=UTF8&tag=dependascient-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B00305GYIO

Posted on Oct 03, 2010

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Follow this step to check the lcd screen :
Just plug this to the power supply and see if you get the colour lines on the screen if you get the colour lines that means the lcd is fine,
but if u dont get that u will have to replace the lcd screen.
If you get the colour bars then the component responcibe to give light on the screen needs replacement.

Posted on Oct 02, 2010

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Posted on Jan 02, 2017

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1 Answer

VX37L Screen Suddenly Went Blank, Now No Image, Sound Only on Cable Input, VIZIO Logo Lights Up


Hello,
turn on the set, grab a bright flash light and dim the lights in the room. Shine the flash light on the screen, if you see a faint picture on the screen, you are dealing with a backlight problem. There are several things that can cause this. One, a bad backlight inverter, two, faulty 24vdc power supply, three, bad main board, or a bad faulty backlamp.

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it could be a backlight problem. Try this, dim the lights in the room, turn the set on. Take a bright flashlight and shine it on the screen. If you see a faint image on the panel, you have a backlight fault.

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Screen black, no video have audio. Went black at some point when I was distracted. Have tried unplug/pause/repugnant - no help. On/off did nothing either.Vizio, Mdl- VO320E, LCD. Not listed on your...


You need to perform the flashlight test. Turn off the lights in the room, turn the TV on, take a bright flashlight and shine it on the screen. Do you see the faint image on the screen?? You could have a defective backlight inverter, defective power supply, or a main board issue. You set will require diagnosis to determine.

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My screen suddenly went black and even after turning it on and off, and removing the battery and holding down the power button the screen will not return to normal..help


Depending on the age of your laptop there is a good chance that your backlight inverter is no longer functioning.

What type of laptop do you have and how many years have you had it?

Depending on the model you might be able to pick up an inverter very cheap.

Mar 01, 2011 | Computers & Internet

2 Answers

When i switch on my laptop I see the led lights on but the screen is blank. I do not even see the hp icon that shows up initially


Hello !

It is typically the display's backlight or inverter board.

If you were experiencing discoloration in the screen (pinkish lower light hues) before it failed, that would indicate a CCFL backlight issue. If the screen suddenly went dim on you rather than a slow degradation the inverter would be indicated.

Hope this helps.

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1 Answer

My NC-10 screen just went crazy. I can tap on the


You may have a defective CCFL backlight, it may have the following symptom: Screen flashes on and off or displays reddish pink hue. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickers 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 replace the CCFL lamp.
To determine if the video card or the LCD is faulty, 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. It could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out, this is the most likely case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out LCD Parts for service, parts, and DIY info Use this link to their WEB site :-
www.lcdparts.net

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2 Answers

No picture just sound


- try to on it again and observe how long will it takes and it will lost the display again, then explain it agian to the technician

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Dark screen


if the picture is REALLY dark, like you can just barely see it in a lit room, then the backlight might not be lit. LCD TVshave backlight that shines through the LCD screen which allows you to see the picture.

If it's not the backlight then it would be the brightness/contrast settings that need to be adjusted. If the picture used to be normal and all of a sudden went dark, verify the backlight. Normally you can look through the slots on the top of the set and determine if the backlight is on. If you can see a bright light through any of the slots, the backlight is probably OK... go after the brightness/contrast settings.

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