Question about Vizio GV42L 42 in. LCD Television

1 Answer

Vizio television screen flickers like a strobe light

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,889 Answers

Lcd sets use florescent tubes to light the display and, a ballast to power the tubes just like the lights in an office ceiling.
the tubes are called cold cathodes and, the ballasts are called inverter boards. replace your inverter circuit board it connects by wires to the cold cathodes so; isn't hard to find.

Posted on Oct 05, 2009

Ad

3 Suggested Answers

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

Ad
caroldon
  • 17130 Answers

SOURCE: I have a vizio 37inch

This is a common fault solution which can be checked and corrected by you assuming that there is no component failure. There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance.

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol. Have a rough idea of looking into the areas to reduce the time of probing.

Check for tips to look into the SMPS unit with some of my tips:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Thank you for using Fixya.


Posted on Aug 11, 2011

marmeto12
  • 155 Answers

SOURCE: a strobe like flashing in

your LCD has a failing backlight bulb. you need to replace it,if you can do it by yourself
try to go to this site http://www.lcdparts.net/howto/troubleshooting/LaptopCCFL1.aspx
here you can buy some parts that you need.
but its wise to refer to a professional before you do this.
Or if the flashing has a smell. it has a high voltage leak from inverter boards and to the wires going to ccfl backlight bulb.

Posted on Aug 28, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Snow on screen with no picture.loud noise on audio


42" Vizio TV flickering strobing easy way to repair VW42L ...

? 2:49
https://www.youtube.com/watch?v=Qba7_YHnXwM
Dec 2, 2013 - Uploaded by ozzysslayer
42" Vizio TV flickering strobing easy way to repair VW42L HDTV10A LCD TV ... EASY How to Fix Samsung LCD TV Flashing Flickering Screen!Missing: vp422hdtv10a ‎snow

Vizio Replacement Boards - ecoustics.com

www.ecoustics.com > ... > Plasma & LCD TV Forum
Apr 15, 2009 - I have a vizio p42hdtv10A that just went into a black screen. .... I have a Vizio VP422 HDTV10A that will not stay on or show a picture. I removed ... Vizio vp422 hdtv10a
Dec 20, 2011
Plasma & LCD TV Forum
May 13, 2011
More results from www.ecoustics.com

Dec 30, 2015 | Vizio VP422HDTV10A 42 inch 720p LCD HDTV

1 Answer

Why is my vizio tv flickering?


either inverter board fault or power supply fault!

Jun 07, 2014 | Vizio L32 32 in. LCD HDTV

1 Answer

Vizio screen flashing


ok when mine did that i shut it off then on then off then on again four times then unpluged it and plugged it back in and waited for a few minutes and it was fine if that don't work then its most likely an internal problem and it would have to be fixed by a professional

Feb 05, 2014 | Televison & Video

1 Answer

GV42L FHDTV10A CCFL & Inverter Board issue


Is the strobe light affect the entire screen? or just a part of the screen? I would say you either have a problem with the inverter circuit or power supply. You need to ensure that the inverters are being fed a clean 24vdc. If you are getting ripple voltages in the 24vdc power supply, your backlights will flicker. Also check the inverter boards and also the power supply capacitors for any bulging tops. I would also suggest you monitor the "backlight on" signal from the main board. It should be around 3.3 Vdc and again no ripple.

Jun 11, 2013 | Vizio P2 42 in. HD-Ready Plasma Television

1 Answer

No matter which input setting is on the screen has a consistent flickering/flashing. Somewhat strobe light-like. What might have happened? Could a power surge have caused this problem? There was a pretty...


That would most likely be the inverter/ballast part of your powerboard and may simply need to be re-soldered. The flashing usually occurs when your speakers rumble due to volume and vibration. Try muting your television and see if the flashing decreases. If it does, then you simply have a weak solder joint that can be repaired inexpensively.

Oct 26, 2010 | Vizio VW32L 32 in. LCD HDTV

1 Answer

FLICKERING BACK LIGHT


Sounds like you have an LCD tv with backlight problems. Check power board for domed capacitors and replace them. next check connections on the inverter boards. they are on the sides or just one side. Becareful there is high voltage output from these boards. If the cable from inverter board is not good to the screen you can get a strobing. the inverter boards may need replaced. or cales to screen may be bad. The panel also could be bad.

Mar 25, 2010 | Televison & Video

1 Answer

I've got a 37" LCD made by Vizio. After about twenty min. the screen start to flutter or flicker like a strobe light. Power on the unit stays on while this occures. What cani do to fix this?


I am having the same issue, I think the best solution is to replace the inverter slave and master boards. These are the circuits that controls the backlight and causes the flickering when they are malfuctioning.

Dec 15, 2009 | Vizio L37 Television

1 Answer

My vizio tv flashes like a strobe light


Sounds like your Backlight Inverter Board is going out, saw one on ebay for about $55 : ) have to get the one for your model tho...

Aug 21, 2009 | Vizio L32 32 in. LCD HDTV

Not finding what you are looking for?
Vizio GV42L 42 in. LCD Television Logo

3,285 people viewed this question

Ask a Question

Usually answered in minutes!

Top Vizio Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74383 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

Are you a Vizio Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...