Question about Vizio VO37LHDTV10A 37 in. LCD TV

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Where is the backlight inverter located - Vizio VO37LHDTV10A 37 in. LCD TV

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Back light inverter board is located on left side if you see tv rear, usually its covered with some shield.

Posted on Oct 12, 2010

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Sharp aquos lc-70le857u backlight inverter location


The backlight inverter is an integrated part of its main power supply regulator [SMPS] board.
If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/

Sep 22, 2016 | Sharp Televison & Video

1 Answer

No back light


Hello
If sound output is OK, and there is no picture, the fault is with backlight section itself. Check its backlight CCFL lamps, and backlight inverter board for fault. This is the picture of the backlight inverter board to your TV. It can ble located at the left side of the display panel. There is norepair to this bard other than repalce it with same type and number. Before replace it, check whether proper voltage comes to it from the main power regulator board.2_16_2012_4_51_14_am.jpg

Feb 15, 2012 | Westinghouse Electric VR4085DF TV

2 Answers

Screen on laptop advent 7102 very dull can hard use it hardly any brightness


The LCD screen for the Advent 7102 does not produce light. It needs an additional light source.
A Backlight is the additional light source.

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

An Inverter (Screen Inverter) converts electricity from the laptop, for the LCD screen, and the Backlight.

90 PERCENT OF THE TIME the fault is the Inverter.


The Inverter is a small circuit board located behind the Display Bezel, and under the LCD screen.

[ The Display Bezel is the thin plastic frame in front of the LCD screen. Resembles a picture frame ]

Example of a screen Inverter for an Advent 7102 Netbook PC,

http://www.laptoppowerjacks.co.uk/category-27/Acer12.html


Regards,
joecoolvette

Oct 17, 2011 | Advent Netbook

1 Answer

Hp g5000 sreen does not light up as usal, i can see a the start up when i shine a torch at the sreen, what do i need to do to get working.


An LCD screen cannot produce enough light by itself. It needs an additional source of light.
A Backlight is used as the additional light source.

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

The LCD screen is a composite of layers, surrounded by a thin metal frame that resembles a picture frame.
To one side of the LCD screen layers, and under the frame is usually where the Backlight is mounted.
[Note* Two Backlights are used in some models]

Replacing a Backlight is more labor intensive than replacing an Inverter.
Due to this, and the cost, the LCD screen itself is replaced as a unit most of the time, when it comes to Backlight replacement.

Example of a replacement LCD screen for the HP G5000 series of Notebook PC's,

https://www.screentekinc.com/HP_G5000_Series--15.4-inch--1280x800-wxga-laptop-lcd-screen.shtml

[Note* Stating HP G5000 is just stating the model series. When buying replacement parts the EXACT Model Number should be used. This information is located on the bottom of the laptop, in a white Service Tag.

When replacing an LCD screen, the model number of the replacement LCD screen should be matched to the existing LCD screen's Model Number.
Inverters and LCD screens are matched together. Make sure you get the correct part]

An Inverter is used to provide power from the laptop to the LCD screen, and to the Backlight.

Note* 90 Percent of the time the problem is a bad Inverter.

Example of an Inverter for an HP G5000 series notebook PC,

http://www.zlectronic.com/product/INVERTER-FOR-HP-DAC-07B035-DAC-09B017-DV5000-G5000.html

The LCD screen, Top Cover, Display Bezel, Inverter, Backlight, and various screws, make up the Display Assembly.
The Display Bezel made of plastic surrounding the LCD screen, and in front of the LCD screen is removable.
Behind it is easy access to the Inverter.

The Inverter is approximately 4 inches long, and the width of a No.1 pencil.
Usually located at the bottom of the LCD screen, and right behind the Bezel.

This article shows replacing an Inverter and LCD screen on a Compaq Presario v2000 series Notebook PC,

http://www.insidemylaptop.com/replace-lcd-screen-inverter-compaq-presario-v2000-laptop/

This pictorial guide is not for the HP G5000 series Notebook PC, but the models are very similar when it comes to Inverter replacement.
The above link is to show you what is involved.

Please post questions in a Comment.
Regards,
joecoolvette

Apr 03, 2011 | Computers & Internet

1 Answer

My audio works fine but no picture.I was told to check the fuses but dont know where the fuses are located at


The slow-blow white fuse is located nearest the point of where the power cord of the tv first contacts the power supply (middle-board, usually)

However, I would suspect the backlight inverter is faulty:

I would try to look on the power supply first for popped capacitors that supply the 24v rail for the backlight inverter.

Having sound is a positive when it comes to repair. This means that only your screen is not lighting.

If you repair the 24v line and check the 5v feed also going to the ps_on (on) the backlight inverter and you still have no picture...you will need a new inverter.


Hope this helps! Please rate!

Mar 07, 2011 | Televison & Video

1 Answer

Lap top dark screen, with system working fine. plugged on external vga, it works.


90 percent of the time the problem is the Inverter.

An LCD screen cannot produce enough light by itself. It needs an additional light source.
A Backlight is the additional light source.

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp. (Bulb)
Similar to the Fluorescent lamps used in home and businesses, but on a MUCH smaller scale.
(General size is 3 to 5 inches in length, and half the thickness of a No.2 pencil)

An Inverter is used to provide power for the LCD screen, and the Backlight.

An Inverter reduces the power coming from the laptop, for the Backlight.
An Inverter increases the power coming from the laptop, for the LCD screen.

An Inverter is a small circuit board located inside the Display Assembly, behind the Bezel, and usually towards the bottom of the LCD screen.

This is a typical example of an Inverter. It is NOT THE Inverter that you will need.
You have to match the Inverter to the LCD screen. has to be THE Inverter.

http://www.lcdparts.net/InverterDetail3D.aspx?ProductID=2432

Post in a Comment as to the Model Number, and LCVD screen size of your Acer laptop.
(LCD screen's are measured diagonally. From corner to corner)

Nov 24, 2010 | Acer Computers & Internet

1 Answer

The backlight won't turn on but occasionally will flicker.


Suggest you replace the Inverter. A Backlight goes out all at once.
90% of the time the Inverter is the hardware part at fault.

[ An LCD screen cannot produce enough light by itself.
A Backlight is used to supply the needed extra lighting.
A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a much smaller scale

An Inverter is used to required power for the LCD screen, and the Backlight.
Boosts power up for the LCD screen, brings it down for the Backlight.

Dell Support > Latitude D600 Notebook PC > Service Manual

http://support.dell.com/support/edocs/systems/latd600/en/sm/index.htm

Replacing an Inverter is a simple job. Replacing a Backlight is not.
The Backlight is located within the LCD screen assembly.

The metal frame of the LCD screen assembly is removed along the edge where the Backlight is located, to access replacing the Backlight.

In the above list for Service Manual, click on > Display Assembly and Display Latch.

This information shows you where the Inverter is located on a Dell Latitude D620 Notebook PC.
The Latitude D620 is part of the Latitude D600 series of Notebook PC's.

http://www.insidemylaptop.com/remove-replace-lcd-screen-dell-latitude-d620-laptop/

Just one place from a quick search, that sells Inverters for a Latitude D600 series Notebook PC,

http://www.parts-people.com/index.php?action=item&id=2895

MATCH the part number listed that they have, to the part number on your Inverter.
You have to have THE correct Inverter.

Regards,
joecoolvette

Nov 05, 2010 | Dell Latitude D600 Notebook

2 Answers

My laptop screen went black every thing is working but i cant see anything what might be the problem


hold the unit slihtly to a light if you can see the icons dimly on the screen then your screen has gone into freeze mode if you cant see the icons then your screen is probly blown to reset the screen from frozen it needs to be un plugged from the motherboard and plugged back in the plug is located under the panal above the keys

best luck

Oct 14, 2010 | Computers & Internet

2 Answers

I have a Fujitsu Siemens Lifebook s7020 with no backlight. The display is showing everything but it's hard to see because there's no backlight. Everything is also fine with an external screen. I have a...


The Inverter board must be tested and eventually replaced. The inverter is the small board located at the base of display. This is connected to one side to the backlight lamp, to which supplies AC high voltage, and on the other side to motherboard, where receives DC voltage.

Inverter contacts to otherboard and to lamp must be tested , using a multimeter to read volts. The inverter is an AC board, and for safety reason the test must be done by a trained repairer.
If the inverter is OK check the contacts to motherboard and wiring harness to motherboard..

Also ensure that light is not just dimmer because energy save mode is on, or because the laptop is running on batteries.

Sep 07, 2009 | Fujitsu Siemens LifeBook S7020 Notebook

2 Answers

I turn on my computer but the screen is still black


think you might have a failed screen inverter (FL inverter); this problem is very common with laptops. The inverter board acts as a power supply for the LCD screen backlight bulb, it converts low voltage DC power into high voltage AC. On most laptops the inverter board is located inside the display assembly below the LCD screen and you can get access to it if you remove the screen bezel (LCD mask). When the screen inverter goes bad the backlight will not turn on anymore or it turns on for a short time and then goes off, but you still can see a faint image on the screen and the external monitor works just fine. First of all I would make sure it’s not just a loose connection and reseat connectors on the inverter (it looks like you already done this part). Next, I would try replacing the inverter board. It might fix your problem with the backlight. It’s possible that you have a faulty cable, bad motherboard or even bad LCD screen, but I would try replacing the screen inverter first.

Oct 06, 2008 | Toshiba Satellite Pro 4600 Notebook

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