Question about Philips 42MF531D 42 in. LCD Television

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Pixel emits white light w/flares during certain dark backgrounds

The TV model is an LG50 1080 37' brand new. I had this problem, took the set back to the retailer thinking I had a dead pixel/defective unit, and the 2nd TV has the exact same problem at what looks like the same location on the screen: left side, center vertically, 1/3 of the way in from the edge.
I call it a star because it's a white dot on a dark background. The sales guy said it's definitely NOT the TV but maybe the cable box (Time Warner Cable) or possible the CO AX line has junk on it? Said to try S-Video cable and/or get a new cable box
Many Thanks!

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6 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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

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Posted on Jan 02, 2017

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tvtechnician
  • 105 Answers

SOURCE: BLUE LINE

call philips to get this srviced under warranty. this repair might take a few weeks because the failure could essentially be any one of several parts. first thing to try is the ssb, then the logic board and lvds cable. if none of these work then you need a new panel

Posted on Oct 14, 2007

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SOURCE: Right third image filled vertical lines when hot

Ive Had the same issue with my TV - and its really dissapointing to see it so well documented - obviously this is a design fault- its the last Philips TV im buying :(

Posted on Jan 13, 2008

  • 22 Answers

SOURCE: Vertical lines down center of Plasma TV

If it was just a vertical black line, i could definitely solve your problem.  However, i would still perform the following fix if i was you.  It worked for me on my gateway plasma.  Go to the following link and read carefully and follow closely!
http://www.avforums.com/forums/plasma-televisions/462873-black-line-fault-hyundai-hpt4240-fixed.html
ST 

Posted on Apr 28, 2009

praky16
  • 744 Answers

SOURCE: I have Philips 42PF9630A that the screen goes to

hi..
I had same problem....Its fixed now working great....had 2 blown capacitors.Cost me two bucks and about an hour to fix.Look at the capacitors on the main power supply they should be flat..

thank u
rate me

Posted on Jul 21, 2009

  • 73 Answers

SOURCE: the tv will not turn on anymore-have a blinking

internal breaker, hopefully that xbox is plugged into a 3prong ac outlet. unplug the tv from electricity for a half hour and that circuit breaker inside should auto reset.

Posted on Jan 21, 2010

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1 Answer

How to turn off backlight on iphone 4


There is no separate "back light" setting like there used to be on some earlier phones.

In the Settings app of your iPhone, there is a section called "Display & Brightness". You can use that to make your phone's display brighter or dimmer, but as you have probably discovered, it dims or brightens both the foreground and the background elements together as one.

You can turn it all the way down, which is very dim and hard to see in normal indoor light conditions, but may be preferable in extreme low light conditions like in a nightclub setting, or in complete darkness.

Why isn't there a separate back light setting?
To fully answer this, I would probably have get into more than you ever wanted to know about displays.

First, there is really no background or foreground on today's smart phone displays. The foreground elements and background elements we see on the iPhone are really a graphic illusion created by lighting individual pixels with different colors. All of these pixels are on the same plane, so nothing is really behind or in front of anything else. It's just artistically drawn to look that way.

Brightness is simply an "intensity" setting applied uniformly across all of the underlying individual pixels within the display matrix, and has no relationship to color. For clarity, let's look at the difference between lightness in colors, versus display brightness:

COLOR LIGHTNESS is a matter of how much WHITE (all the RGB colors summed, for example) is present in a given color. This has nothing to do with display brightness.

DISPLAY BRIGHTNESS is a matter of how much LIGHT INTENSITY is applied uniformly across all pixels in the display matrix.

At zero display brightness, you would not see white any better than black, blue, green, red or any other color. You wouldn't see anything.

Why did you expect to be able to control the back light?

Prior to the smartphone era, the displays on early cell phones and pagers (and lots of other devices that had displays) had a lighted background that contrasted with dark foreground elements.

The background intensity was a separate setting on those devices, but that's because the background was the only thing that had intensity. The foreground elements were solid black LCD (liquid crystal display) segments that were used to form characters and very simple graphics and lines.

Everything we see on today's smartphone displays is dynamically drawn by lighting different pixels with different colors at different times. Individual pixels on a Retina display are nearly microscopic in size--they cannot be separately discerned by the eye.

Imagine a matrix of microscopic light bulbs, each of which can separately change to any of millions of colors and levels of brightness at any time, on command. Just imagine the sheer number and complexity of possible commands to control a Retina display!

Even if Apple wanted to provide a new feature that enabled us to separately control the perceived "back light", it would only be an illusion as well.

Such a feature would require some sort of complex algorithm to determine which pixels are involved in what you perceive as the "foreground" elements at any given time, so it could add intensity only to those pixels considered to be "background" at any given time.

Since "foreground" and "background" elements drastically change shape (and location) at any time, such a feature would be pretty daunting to implement.

You might be better off using a pure black graphic as your background image if your goal is to have more contrast to make the app icons stand out.

Cheers,

-=Cameron

Aug 12, 2014 | Apple iPhone4 4G iPhone 4

Tip

Why the white or black spot on LCD Display


Dead and Stuck Pixels <br /> Pixel defects for an LCD monitor are defined as one of two types: dead or stuck. Technically, both types of pixel defects are stuck pixels but it really deals with the electrical currents and the state of each pixel or sub-pixel. <br /> A dead pixel is defined as a pixel or set of sub-pixels that has failed and is permanently in the off position. This condition means that the pixel will not let any light through. This can be observed as a dark or black spot on a brightly colored or white background. <br /> A stuck pixel is defined as a pixel or sub-pixel that has failed and is permanently in the on position. This can be either with a single or multiple sub-pixels for a given pixel and is best observed on a dark or black background. A white pixel means all three sub-pixels have failed while a green, red or blue pixel means one of the sub-pixels has failed. <br /> Hope this helps, if so do rate the Tip

on Jan 16, 2011 | Televison & Video

1 Answer

Nighttime photos have white haze (like a light reflections and not focused


If you have a scratch on the front lens of your camera, this could cause this. Bad light conditions, won't help a camera to autofocus.

But every light that can enter the front lens from a certain angle, can cause flares. Called lens flares. On DSLRs you often see a lens hood that comes with the lens. It is wrong to think you only need them in bright sun light, and put them the wrong way around on your lens. Every light source can cause a flair. So even shooting in the dark, close to a light source a lens hood can help to avoid flares. If you don't have a lens hood, screen the light with your hand.
On Wikipedia, you can read more about lens flares.
I won't tell what brand and what model, but a expensive system camera got white orbs in the picture when shooting in certain (dark) light conditions. So don't think it is only your camera.

Dec 04, 2013 | Galaxy Cameras

1 Answer

Little lights like twinkling stars on my projected pictures


it depends on the brand and model number of your set

Mar 17, 2012 | Televison & Video

1 Answer

My brand new LG 37' Led/Lcd t.v. had four very light white spots that you can see in the background what causes this?


Hello
Dead and Stuck Pixels
Pixel defects for an LCD monitor are defined as one of two types: dead or stuck. Technically, both types of pixel defects are stuck pixels but it really deals with the electrical currents and the state of each pixel or sub-pixel.
A dead pixel is defined as a pixel or set of sub-pixels that has failed and is permanently in the off position. This condition means that the pixel will not let any light through. This can be observed as a dark or black spot on a brightly colored or white background.
A stuck pixel is defined as a pixel or sub-pixel that has failed and is permanently in the on position. This can be either with a single or multiple sub-pixels for a given pixel and is best observed on a dark or black background. A white pixel means all three sub-pixels have failed while a green, red or blue pixel means one of the sub-pixels has failed.
Hope this helps, if so do rate the solution

Jan 16, 2011 | LG 37LC7D 37 in. LCD HDTV

1 Answer

Brand new 47" "Edge Lit" LED, model MV4(Cant


I believe there may be another setting, it has to do with auto contrast which can make the TV seems to have high contrast ratio but sometime it does not work right, espically on the scene with dark sky with stars, someitme it will will reduce the brightness to make black real black and you can loger see the stars in the scene. I forget the name of this setting, it may be in the user manual. Do you see that in TV HD mode in other movies with a lot of dark scenes?

Dec 01, 2010 | Televison & Video

1 Answer

Magnavox 42"


You are correct=====Return it ! It's new, you should not have to have it repaired this soon.

Sep 23, 2009 | SNK Magnavox 42MF231D 42 in. Plasma TV

1 Answer

ASTAR 40" LCD / Pixel constantly on


No Sir,
pixel are come from the screen panel. All LCD TV have these pixel and some do shows and some don't. Also depending quality of the screen panel. (These should be counted panel defective) according the information through the LCD factory.

Oct 17, 2008 | Astar LTV-20PW 20 in. EDTV-Ready LCD...

2 Answers

Straight out of the box had 3 pixels out, Now 2 days later a Black Circle.


The white spots are called 'dead pixels' and depending on the manufacturer, they may allow a certain number of them but normally not in the primary viewing area.

The other anomaly shouldn't be there and LCD displays are not affected by magnetic fields as are CRTs.

Return it quickly and I would be reluctant to accept a simple exchange.
Do some checking on the Dynex brand before you take it back though to see if this kind of quality is common to the make.

You might start here:

http://www.google.com/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2005-37,GGLG:en&q=dynex+lcd+problems

Jul 06, 2008 | Dynex 32 in. LCD Flat-Panel HDTV

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