Question about Gateway FPD2275W LCD Monitor

2 Answers

Ccfl inverter board

Hi, I need to replace a blown inverter board . I have identified the inverter as being mounted on the main board ( not separately) its a viewsonic lcd monitor.

a few questions:

How do I know which parts to replace? How can I fault find the inverter?

Which part usually blows when an inverter stops working?

any advice appreciated

Thanks

Posted by on

2 Answers

Where can I buy a new transformer

Posted on Jun 08, 2008

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 40 Answers

The most prevalent failure on these boards are the transformers and or the ic that controls the frequency of the lamp drive. More times than not you will find a bad transformer.
srich

Posted on May 23, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

LN-T5265F has a 5 inch section horizontally at top of screen that goes partially black.


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
If the set's back-light is of CCFL type, check the CCFL tube at the top part of the screen for any flickering. If so, replace that lamp.

Feb 10, 2017 | Televison & Video

1 Answer

Toshiba 32bv500b shady screen lines across screen is it the t con board is a way


Back - light problem. If the back-light type is CCFL lamp, check all the CCFL lams for weak emission. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Jan 12, 2017 | Toshiba Televison & Video

1 Answer

Have a dark band horizontally across vizio tv. Appears to be a backlight, but not sure how to fix


Could be a bad CCFL lamp, if the set usess CCFL back-light system. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Jan 08, 2017 | Vizio Televison & Video

1 Answer

I have a Hisense 50h5g 50" tv, I have sound but a black screen it passed the flashlight test so I do have a picture just no backlight Iv replaced the power, tcon, and main boards, still have same prob


If the back light is CCFl type; check and replace all CCFL lamps and back light inverter board.
Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Sep 15, 2016 | Hisense Televison & Video

1 Answer

Why has top third of picture started turning dark?


Back - light problem. CCFL lamp/s. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced.

Jan 18, 2016 | Televison & Video

1 Answer

Emerson model lc401em2f line in center of tv how do I fix


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. If the back-light system is with CCFL lamps; check and replace the damaged CCFL lamp; at the centre of the screen.

Nov 27, 2015 | Emerson Televison & Video

1 Answer

Hi, I have acer aspire 5520,2 Gb RAM... When I turn on my acer,everithing works just fine,exept monitor,it remains black,When I try ecternal monitor,it works fine,windows wors fine to,everithing but the...


Aspire 5520 has LCD Display. The screen displays becomes dark/ dim if there is no backlight.
There are two parts responsible for lighting the display. First is the CCFL (Cold Cathode Florecent Lamp), which is the back light and the second is the Inverter board, which provides high voltage to the CCFL. These parts are inside the LCD screen. Either of the parts may be faulty or in some rare cases both. Also, the video data cable may be loose or faulty, which can be identified only after opening the top cover.
So, my advice is that you get it properly checked by any professional for replacement of Inverter or CCFL.

Hope it helps! Good Luck! Thanks for using Fixya!
CreativeTECH

Jun 22, 2011 | Acer Aspire 5520-5579 Notebook

1 Answer

Black band across bottom of screen


hi,
Is the black band is about one two inch thick have to check the back light section of your lcd tv. All lcd tvs have back light to illuminate the pixels. Two types of back lighting are there CCFL (cold cathode fluorescent Lamp) and LED. In your tv its CCFL. CCFL need high voltage 1000V or above . For providing this high voltage there is inverter stage ( back light inverter). Also there will be 12 or more CCFL behind the lcd screen. If any on of there CCFL failed the there will come a gray bar noticeable only when there is hight light.

There will be two causes for this problem.
1. CCFL is faulty.
2. The inverter transformer driving CCFL is faulty.

You have to check the inverter fist. For conforming which one is faulty do the following.
There is independent connection for every two CCFL from the inverter board. Try interchange the two nearest connection. And watch is the line is shifting or not after every interconnection. You have to try by interchanging all the nearest to connections for CCFL.

If the line shifted then the inverter board is faulty. If the line stays there then the CCFL is faulty. Normally there will be problem with inverter transformer. If the transformer is faulty then you have to replace the inverter board as a whole.
ok

Jun 11, 2011 | Sharp AQUOS LC-32D44U 32 in. LCD TV

1 Answer

VIZIOP42HDTV10A . It hadn't picture mean black screen , but hear sound from every channel and all another devices input


hi, Your tv has problem with its back light inverter stage. All LCD TV have back light to illuminate the pixels. There are two types of back lighting CCFL(Cold Cathode Fluorescent Lamp) and LED. In your tv its ccfl. As it is ccfl it need a high voltage above 1000v. To provide such a high voltage there will be an inverter stage in all lcd tv with ccfl back lighting. Normally in LCD tvs there will be three boards such as Mother board , Back light inverter board, and power supply. In your tv the ccfl back light inverter stage is faulty. There will in inverter transformers in the inverter board. As it is high voltage transformer there is possibility of its winding get shorted. If so it will drain a high current from the power supply and the protection circuit will shut down the voltage to the inverter board. check the inverter board first. Also there is possibility of bad electrolytic capacitors in the inverter board will lead to this type of problem. First of all check the supply voltage from the power supply to the inverter board. Change the electrolytic capacitors in the inverter board and in the power supply stage. If the problem is not rectified then you have to replace the inverter board. ok

Jun 10, 2011 | Vizio P42HD Television

1 Answer

The backlight inverter board .what can aproblem do?


Hi there,
An inverter board is an electronic circuit which boosts a low voltage DC current in to high voltage. It's used to power a CCFL tube in he television, which enables the backlight. The inverter, is composed of a MOSFET transistor, acting as a switch, an a coil, which boosts the voltage. The common high voltage output of the inverter board is around 800V.
If your inverter board has gone bad, you could replace the transistor and the coil in the board. This method is the cheapest option, but involves a lot of soldering and time. I encourage you to replace the whole inverter circuit, which is far easier, and not so much expensive.
You will have to take apart the television. Unplug the TV from the power outlet-wait around 8 hours to give time to the capacitor to discharge. Unscrew all the bolts of the back panel, and then, with a plastic tool-like a credit card- pull the back of the screen. After that, you will be able to see the circuit board of the TV. Localize the inverter board, it should be identical to this:
http://thumbs1.ebaystatic.com/m/mYnvyfIEorz5TT9qxKTuKzw/140.jpg
Then unplug the BUS cable and every CCFL tube connectors carefully-they are easily identified with a pink and a white cable. Afterwards, unscrew the fixing bolts of the board, and change it for the new one. You can buy a new one from ebay:
http://shop.ebay.com/?_from=R40&_trksid=p5197.m570.l1313&_nkw=32AV502R+inverter&_sacat=See-All-Categories
All you have to do now, is to reverse your steps. Connect each CCFL tube, put the back of the television on, screw the bolts and you are done.

Feb 13, 2011 | Toshiba 32AV502R LCD TV

Not finding what you are looking for?
Gateway FPD2275W LCD Monitor Logo

Related Topics:

660 people viewed this question

Ask a Question

Usually answered in minutes!

Top Gateway Computers & Internet Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18358 Answers

Prashant M
Prashant M

Level 3 Expert

2260 Answers

Are you a Gateway Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...