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Monitor There is a small bright dot about the size of a pixel on the screen. What could this be and is it bad? We have an Optiquest 20" lcd flat panel monitor. Thanks, greg

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Hi if your pixel is permanently brigthing you can try to press gently on the screen on the bright dot to expanse the liquid, sometimes the pixel freeze on lcd monitor.
hope this helps

Posted on May 22, 2008

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Posted on Jan 02, 2017

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My tv screen has a black spot


HI,
Are you sure that there is balck dot on the sreen. Check one more time is it any dust on the screen.
Black spot Means pixel of the Lcd sreen is fault. There are thousands of pixels in an lcd screen. when any of the pixel or a group of pixels become faulty the black spot will appear. Its not possile to rectify the problem other than replacing the LCD panle if its avilable. The avilability of lcd screen is very rare.
Ajin

Jun 16, 2012 | Emerson EWL20D6 Television

Tip

Monitor buying tips you should know.


Over the years monitors have transformed from those bulky CRT monitors to square LCD screens to stylish flat wide screen LCD's and now to new stylish extremely thin LED screens. On average every PC user spends at least 5 hours a day looking at the monitor. If the picture is fuzzy and not clear enough then there is a very high possibility that the eyes get damaged.

An older CRT monitor
slasher_x_51.jpg
A wide LCD monitor
slasher_x_49.jpg

A newer ultra flat widescreen LED monitor
slasher_x_50.jpg


Monitor Sizes
There are many different sizes of CRT, square LCD, wide LCD and wide LED monitors available on the market at the moment.

If you want an older CRT screen then sizes can range between 14" to about 20", they use the 4:3 aspect ratio.
If you want an older LCD screen then sizes can range from 15" to 19", they also use the 4:3 aspect ratio.
If you want a newer wide screen LCD then sizes can range from 18.5" to about 27" and even larger. They use the 16:9 if they are full HD or 19:10 if they are not ratio.
If you want a newer wide screen LED then sizes can range from 18.5" to about 27" and even larger. They also use the 16:9 if they are full HD or 19:10 if they are not ratio.

Image quality
The sharpness of the image in a monitor greatly depends on your Graphics card as well as whatever resolution you are running at. Nevertheless the quality of the monitor plays an important role.

Here are some of the tips that you should know before buying a monitor.

1. There are three types of monitors namely CRT, LCD and LED. The monitor that looks like a TV is a CRT monitor. In CRT monitors there is a Cathode Ray Tube that shoots electrons into the screen to create the image. An LCD monitor is smaller in width and consumes less power and is healthier if you are going to be spending large amounts of time at your PC. The LED screen looks the same as an LED monitor and the difference between it and the LCD is that it has a much higher contrast ratio resulting in darker blacks and much lighter whites.

3. A CRT monitor is much heavier than LCD monitor as you can imagine by it's bulky appearance. A LCD monitor is very lightweight and so is a LED monitor.

4. The distance between two adjacent pixels in a monitor is called 'dot pitch'. This is measured in millimeters (mm). Smaller the dot pitch the clearer the picture quality. Usually there are monitors with dot pitch varying between 0.20 mm to 0.27mm. Some manufacturers use diagonal dot pitch while most of them use horizontal dotpitch. The diagonal dot pitch is always longer than the horizontal dot pitch

5. Resolution of a monitor has to be considered with care. Most of the CRT monitors have resolutions of 800×600, 1024×768 and 1280x1024. The square LCD monitors have 1280×1024 and 1600×1200 resolutions. Newer wide screen LCD monitors have resolutions of 1600x1900, 1680x1050 and the Full HD 1920x1090. When the resolution is higher the images and text will appear smaller. But you can see more text and bigger pictures in the monitor with high resolution.

6. Another thing to note is the 'Refresh rate'. This rate is usually 60Hz, 73Hz, 75Hz, 85Hz. Refresh rate of 85Hz means the picture on the monitor is refreshed 85 times within a second.

7. The brightness and contrast can range between a low 5 000:1 to a high 80 000:1 in a LCD monitor and an average of 5 000 000:1 in a LED, yes that's 5 million to 1 with a LED. This just shows how much better a LED monitor is to a LCD.

8. If you are a gamer then the thing you have to look at with LCD monitors and LED monitors is the response time. If it is 16ms then this is a very bad monitor for gaming and you will experience a ghosting effect in most games and if it is 5ms then you will have an average gaming experience. What you want to get is a 2ms response time monitor, with it you will have the best gaming experience with no ghosting what-so-ever.

on Mar 06, 2011 | Computers & Internet

1 Answer

Viewsonic optiquest flat panel lcd monitor power light flashes on and off with a popping niose


Look for bad caps with bulging/leaking tops as shown here:
http://s807.photobucket.com/albums/yy352/budm/OPTIQUEST/Optiquest%20Q9B/

Very common problem in all LCD monitors as you can see in my albums.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Oct 26, 2011 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

1 Answer

I have model LCM-19v1 SL monitor and I need to know what type of power cord I need for it. and possible a picture


hi,

these are the specs for you monitor

Upgrade your desktop display in size and style with this Westinghouse LCM-19v1 19-inch LCD monitor! Its advanced HD-Grade flat panel technology lets you enjoy crisp, vibrant images while working on spreadsheets, writing email, watching movies, playing games and surfing the web.

Some key features include 1280 x 1024 native resolution, 600:1 contrast ratio, and a fast 21 ms response time. Its thin, sleek and sophisticated design will complement any office. Get yours today!
By law, California shipments of this product are subject to an $8.00
Electronic Waste Recycling Fee
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Features/Specifications:
  • Westinghouse LCM-19v1 19-Inch TFT LCD Flat Panel Monitor

  • General Features:
  • Silver Cabinet color
  • 19" diagonal screen size
  • Native/Optimum Resolution: 1280 x 1024 16.7 million colors
  • Compatible Modes: VGA, SVGA, XGA, SXGA
  • Contrast Ratio: 600:1
  • Brightness (Nits): 300 cd/m2
  • Response Time: 21 ms
  • Viewing Angle: 170 degree Horizontal, 170 degree Vertical
  • Built-in stereo speakers
  • Connectors: 3.5 mm stereo mini-jack. VGA-in, DC-in
  • DC Input: 19V - 3.1A
  • EnergyStar compliant

  • Regulatory Approvals:
  • FCC
  • UL
Package Includes:
  • Westinghouse LCM-19v1 19-inch TFT LCD Flat Panel Monitor
  • Power Supply (100-24V 50~60Hz)
  • Power Cord
  • Stand
  • VGA cable
  • Audio cable
  • User's Manual
Additional Information:
  • Requirements:
  • Available power outlet
  • VGA adapter

  • Notes:
  • LCD displays may have cosmetic imperfections that appear as small bright or dark spots. This is common to all LCD displays used in products by all vendor and is not specific to any vendor or brand. Below are the acceptable amounts of "dot defects" for LCD displays that we sell:
  • 17-Inch to 18-Inch:
  • Total Defects: 8
  • Bright or Dark Dots (random): 4
  • Bright or Dark Dots (2 adjacent): 2
  • Bright or Dark Dots (3 adjacent): 0
  • Minimum distance between defects: 15 mm (bright to bright dots); 5 mm (dark to dark dots
for the adapter, already inserted the picture of it


matrix12.jpg matrix12_0.jpg

Hope this will help... Your response is very much appreciated....

Jan 20, 2011 | Computers & Internet

1 Answer

THERE is two small bright patches in the screen


the two small bright patches are actually bad pixels.there is nothing to worry about as upto 5-6 bad pixels are fine.these bad pixels do not spread generally so no reason to worry.in case the number of bad pixels on the screen increase to more than 5-6 then you can get your unit replaced by the manufacturer if in warranty.

Jan 14, 2010 | ViewSonic VX910 19" LCD Monitor

1 Answer

Black spot is growing on my LCD Monitor


It is the LCD itself failing, no repair for the LCD itself, the screen will need to be replaced. Likely cheaper to replace the entitr monitor

Sep 20, 2009 | ViewSonic Optiquest Q9b 19" Flat Panel LCD...

1 Answer

Dot in screen


No Solution as its known as a Bad Pixel... Manufacturers allow a certain ammt per unit before rejecting the unit. (I'd take it back also)..

Apr 06, 2009 | Curtis CMMT32 32 in. LCD 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...

1 Answer

Toshiba regza lcd 46x3500


This is what is known as a dead pixel. If you have a standard wide screen lcd monitor it has over 1 million pixels. It is not super un-common for one to go bad. It will either always be dark or in your case always be lit. It is not worth it to repair, and in most cases unless you have multiple dead pixels with in a square inch of screen, it is not covered under warranty either.
Each pixel is individual and the problem will most likely not spread.

Jul 08, 2008 | Televison & Video

1 Answer

Cable question


Make sure your refresh rate is set no more than 60HZ. Your monitor might not support refresh rates higher than that.Also try lower resolutions.
Here is a list of specs: (also try another cable)
Features/Specifications:
  • Olevia LT23HVX 23-inch HDTV Compatible Widescreen LCD TV

  • General Features:
  • Black cabinet
  • 23-inch active screen size
  • 16:9 widescreen aspect ratio
  • HDTV Compatible
  • 1366 x 768 native resolution
  • 1600:1 contrast ratio
  • 8 ms response time
  • 178° horizontal and vertical viewing angle
  • NTSC TV system support
  • 480i, 480p resolution support
  • Progressive scan
  • Color temperature adjustment
  • Built-in 5 watt x 2 speakers
  • PC resolution support up to 1024 x 768 @ 60Hz
  • English/French/Spanish language
  • Sleep Timer
  • V-Chip parental control
  • Energy Star compliant
  • Remote control included
  • Wall mountable

  • Front Panel Features:
  • IR sensor
  • Power
  • Menu
  • Channel down
  • Channel up
  • Volume +
  • Volume -
  • Source

  • Rear Panel Features:
  • 15-pin VGA
  • Audio in
  • Headphone
  • Component Y, Pb/Cb, Pr/Cr
  • Composite RCA video inputs
  • S-Video
  • Antenna

  • Power Specifications:
  • 100-240V, 50/60Hz, 2.5A (max)
  • 110 watts AC power consumption

  • Unit Dimensions:
  • 16.5 x 27.1 x 8.3-inches (H x W x D)
  • Gross Weight: 23 lbs
  • Net Weight: 21 lbs

  • Regulatory Approvals:
  • FCC
  • CSA
  • UL
Package Includes:
  • Olevia LT23HVX 23-inch HDTV Compatible Widescreen LCD TV
  • Quick Start Guide
  • Manual
  • Remote control w/two AA batteries
  • Power cord
Additional Information:
  • Notes
  • Model: LT23HVX
  • Product Requirements:
  • Satellite cable or antenna
  • PC with 15-pin VGA adapter
  • Stereo system with component, S-Video and composite jacks
  • Available power outlet

  • Disclosures:
  • LCD displays may have cosmetic imperfections that appear as small bright or dark spots. This is common to all LCD displays used in products by all vendor and is not specific to any vendor or brand. Below are the acceptable amounts of "dot defects" for LCD displays that we sell:
  • 20-Inch to 23-Inch:
  • Total Defects: 8
  • Bright or Dark Dots (random): 4
  • Bright or Dark Dots (2 adjacent): 2
  • Bright or Dark Dots (3 adjacent): 0
  • Minimum distance between defects: 15mm (bright to bright dots)
  • Minimum distance between defects: 5mm (dark to dark dots)

  • Disclosures:
  • Consumer Notice:
  • This television receiver has only an analog broadcast tuner and will require a converter box after February 17, 2009, to receive over-the-air broadcasts with an antenna because of the Nation’s transition to digital broadcasting. Analog-only TVs should continue to work as before with cable and satellite TV services, gaming consoles, VCRs, DVD players, and similar products. For more information, call the Federal Communications Commission at 1-888-225-5322 (TTY: 1-888-835-5322) or visit the Commission’s digital television website at: www.dtv.gov.

Nov 29, 2007 | Olevia LT23HVX 23 in. LCD Television

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