Question about RCA HDLP50W151 50" Rear Projection HDTV

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STRAY PIXEL I've got a single point of white light, that seems to be permanent. It hasn't moved, in the 3 1/2 years we've had the set. It did go away, briefly as the warranty was about to expire, then it returned. We just had to replace the main lamp. That went well. I'm wondering what it will take to get rid of that "single point of light".

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When you have a single pixel issue like that, while it can be annoying, the cost out weighs the annoyance. You have a single pixel gone in one of the 3 lcd panels in the optical engine itself. Part # 261589, list price 687.50. You will also need a technician to do the install, as this isn't a simple repair.

Posted on Jun 04, 2008

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GE digital timer 15313 has 3 wires, black, blue and green. Wall switch wires have bare, black, red and white from one line, and black and white from the other line. I've tried every combination


It sounds like you are replacing 3-way switch.
Low voltage light? Are these lights connected to 120Volt circuit?

I think you want the GE 15312 timer, instead of GE 15313.
http://waterheatertimer.org/How-to-wire-GE-15312-timer.html

GE 15313 is for single-pole incandescent light bulbs only.

This is live answer 11-2012
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Nov 22, 2012 | Hardware & Accessories

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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

Tip

How to fix a dead or stuck pixel on an LCD screen


A dead or stuck pixel on an LCD screen or TFT can be incredibly annoying. You'll be staring at it for days on end, wondering for how long you'll be without your screen or maybe your entire laptop if you decided to turn it in for repair or replacement. All that grieve over something as unimportant, yet highly irritating as a malfunctioning pixel.<br /> Before you run the item back to the store though, you should try to see whether you can fix it yourself! This, if done carefully, will not hamper your warranty and might save you a lot of time and worries. So let's see what you can do yourself.<br /> Let me say that any new LCD or TFT monitor should be tested for pixel errors. This can be done simply by running it through a palette of basic colors and black and white in full screen mode. The software, which we'll get to in a second, can do that.<br /> First let me explain what you may be seeing. Is it just a stuck pixel or is it in fact dead? A stuck pixel will appear in any of the colors that its three subpixels (red, green and blue) can form, depending on their functionality and brightness. In a dead pixel all subpixels are permanently off, which will make the pixel appear black. This may result from a broken transistor, in rare cases however even a black pixel may just be stuck. So if you're seeing a colored or white pixel, your chances are pretty good and if it's black, there is still hope.<br /> Let's turn to the software now. If you're not on Windows, scroll down for some online tools!<br /> <b><a href="http://udpix.free.fr/">UDPixel</a> (Windows)</b> I recommend UDPixel to quickly identify and fix pixels using a single tool. The program requires .NET Framework 2.<br /> <p><img src="fixpixel02.png" /> With the dead pixel locator on the left you can easily detect any screen irregularity that may have escaped your vision until now. Should you have identified a suspicious pixel, switch to the undead pixel option, create sufficient amounts of flash windows (one per stuck pixel) and hit start. You can drag the tiny flashing windows to where you found the pixel in question. Let it run for a while and eventually change the flash interval.<br /> <b><a href="http://flexcode.org/lcd.html">LCD</a> (online)</b> This is one tool that lets you find and eventually fix stuck pixels. It packs many options into a singly tiny window, but once you have an overview it's straightforward and easy to use.<br /> <p><img src="fixpixel06.png" /> To test the screen click the small 'pick a color' box. The colors you should test are red, green and blue. Additionally you should test white and black. Follow the instructions in the box to gain the best results.<br /> <b><a href="http://tft.vanity.dk/">Online Monitor Test</a> (Online)</b> This is a very thorough test not only meant to identify bad pixels, but also powerful enough to test the quality of your monitor. You can choose between three different modes to test your monitor. This tool either requires flash (online version) or it can be installed in the executable mode.<br /> <p><img src="fixpixel03.png" /> What you will need to just test for stuck pixels is the HTML window. Toggle full screen by hitting F11. What you will see is displayed below.<br /> <p><img src="fixpixel04.png" /> Move the mouse to the top of the test window and a menu will appear. There is an info window that you can turn off with a button in the top right of the menu. Then click on the homogenity test point and move through the three colors as well as black and white. Fingers crossed you won't discover anything out of the ordinary. In the unfortunate case that you do, you may find the following online tool helpful.<br /> <b><a href="http://www.jscreenfix.com/basic.php">JScreenFix</a> (Online)</b> Alternatively, and if you're not using Windows XP, you can use the online tool JScreenFix which launches a Java applet to fix stuck pixel.<br /> <p><img src="fixpixel05.png" /> The tool launches a small applet in a separate browser window and you can drag the window to the respective spot or run it in full screen.<br /> Hands On (Offline) Should none of these tools resolve your pixel issue, there is one last chance. You can combine any of the tools and the magic power of your own hands. There is a very good description of all available techniques on <a href="http://www.wikihow.com/Fix-a-Stuck-Pixel-on-an-LCD-Monitor">wikiHow</a>. Another great step by step guide can be found on <a href="http://www.instructables.com/id/Fix-a-stuck-pixel-on-an-LCD-monitor/">instructables</a>.<br /> But let's go through one technique real quick:<br /> <ol> <li>Turn off your monitor.</li> <li>Get yourself a damp cloth, so that you won't scratch the screen.</li> <li>Apply pressure to the area where the stuck pixel is. Try not to put pressure anywhere else, as this may trigger the creation of more stuck pixels.</li> <li>While applying pressure, turn on your computer and screen.</li> <li>Remove pressure and the stuck pixel should be gone.</li></ol> This works because in a stuck pixel liquid in a subpixel has not spread equally. In combination with the backlight of your screen, this liquid is used to allow different amounts of light to pass through, which creates the different colors.<br /> Should all of these approaches fail to fix your pixel warrior, at least you'll now know it's not simple to fix and the LCD may indeed need to be replaced. But please do let us know if these tips helped you to fix your pixels. In any case, good luck!

on Jan 04, 2011 | Sony KDF-E55A20 55 in. LCD Television

1 Answer

Viewsonic PJD6211, I have white pixels and black ones and some are blinking white now and I have a few black lines going across my image and a white one going up and down. What do I need to do to fix


Clean and verify the color wheel and its sensors. They can get dirty and wheel no longer syncs. The next thing is if the air cooling of the DLP chick got clogged that MAY have damaged the chip. It moght be permanent but check that the air passages for the heatsink of the chip are open.

Jun 26, 2012 | Computers & Internet

1 Answer

My screen is showing white spots (pixel size) How do get rid of them


On a WS-73735 the white spots usually mean a failing or damaged optical light engine.

It is a major part----Google the model number with "problems" or "light engine" etc.

Jun 10, 2012 | Televison & Video

Tip

Avoid buying a new thermal print head!!


Thermal printheads - white lines - - move your image!

Hi People,

I've been a printer engineer for many years now, before that i worked designing label formats and operating thermal transfer printers that produced over 2,500,000 labels daily. During my time operating thermal transfer printers I discovered that sometimes you can have a printhead that blows 1 pixel out, and no more will blow for 3 - 6 months! As sod's - law would have it, the blown pixel would be through a barcode or image, making the printer unuseable until the expensive (usually 300.00 - 1500.00 pounds) printhead has been changed. If you have many vertical white lines through your labels or tags, this might not work. Most makes of Thermal printers that have an LCD display will have margin settings and/ or image movement settings that you can change through the operator panel, you will have to consult your user manual. Simply move the image across the page until the white line caused by the blown printhead is in an unprinted area or sufficiently hidden between characters! In addition to this, if you are using software such as bartender, label matrix or similar, you should be able to edit the label image or label format on your Pc, and manipulate your label format in a matter of seconds, again moving or changing your data fields in a way that hides the offending white line between characters or in an unprinted area. I know this will not always work, but its worth a go as you could extend the life of your print head by upto 6 months.

By M.Schroder

on Apr 06, 2010 | Office Equipment & Supplies

1 Answer

Hi. I have a paragon 4001-00 timer hooked up to my pool filter. It's worked great for the last 25 years but recently it has become finicky. It will always turn off, but sometimes it won't turn...


If new X2772 tripper hasn't solve problem, it might be time for new timer.
http://waterheatertimer.org/Paragon-timers-and-manuals.html#4000

4001-00 is 120Volt single pole single throw timer in Nema1 indoor enclosure
Wiring terminals 1 2 3
Black Hot wire from breaker connects to terminal 1
Black wire going to load connects to terminal 2
White neutral wires connect to terminal 3

Crossover Intermatic timer is T101
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101
Wiring terminals A 1 2
Black Hot wire from breaker connects to terminal 1
Black wire going to load connects to terminal 2
White neutral wires connect to terminal A

Jul 06, 2011 | Paragon 4001-00 24-hr Timer Control 120v...

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

A gree speck on the screen


It's an "open" pixel. It is unable to close to block the light, so it appears as a dot. The color white is made up of red, green and blue. So, a single open pixel will have just a single color. If you have had the TV for just a short time (< 30 days), many retailers will exchange the TV. However, if you have had the TV longer, you should contact the manufacture. The pixel specifications will vary from manufacture to manufacture... but some manufactures have a zero dead pixel specification and they will repair the TV at no cost to you. I hope this was helpful, best wishes.

Apr 17, 2010 | LG 42LC2D 42 in. LCD HDTV

1 Answer

Pixel


Unfortunately it would appear that your pixel is "dead". Your screen is made out of several million transistors, 3 for every pixel. If one of them fails you will obtain that small point on your screen. There is nothing you can do. Warranty woun't cover this because based on international regulations you need to have at least 5 subpixels (transistors) broken in order to comply with in warranty repairs. In terms of manufacturing companies one dead pixel is an "unfortunate accident" but not one compliable with warranty conditions. You can't do anything except changing the whole display unit, because the damage is permanent to that particular pixel. Sorry for delivering the bad news.

Jun 05, 2007 | Sony PlayStation Portable (PSP) Console

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