Let's Resolve the Frequent Troubles of LCD Monitor Ourselvess

TFT LCD monitors are rapidly becoming shipped with new computers by default. On this page I explain you the frequent trouble of TFT monitor and how to resolve them.s
No display or white screen:
If this is a new install make sure the refresh rate is not set too high. If you installed a new video card in your system make sure the refresh rate is not set too high. Under Windows, reboot the system and go into "Safe Mode" (Use F8 key on boot up) select safe mode and change the refresh rate under display properties to either 60Hz or Default. Then reboot the system and the screen will turn on. Maximum mode on 15" TFT screens is 1024x768 and maximum mode on 17" and 19" TFT is 1280x1024. Check to see if the green light is on with the external power adapter. Make sure all plugs are secure and the video cable is properly attached to the computer.
Dark screen in games:
TFT Liquid Crystal Display monitors are a unique devices that are manufactured to meet excellent picture clarity and reproduction in a native mode. Outside a native mode graphics will be darker, fine lines and text will be thicker. Native mode for 15" TFT panels is 1024x768, 17" and 19" TFT panels are 1280x1024. Most games can be configured to run at 1024x768 which should produce clean graphics.
Thick text:s
As described above, TFT LCD monitors perform best in their native modes. Other modes can be used however the reproduction of text will vary in thickness depending on the mode the monitor is running in. Best text reproduction is view in the monitors native mode.
Faint or unseen text:
TFT monitors are Bright! So bright that sometimes text in a DOS program may be very faint or not seen. In order to see this text, you can reduce the contrast level down until the text is visible. TFT LCD monitors were manufactured to perform in a GUI environment such as Windows, Linux (X) and Macintosh. Older designed programs may have upgrades to enhance this effect to make the text legible.
Wavy lines on the screen:
In some instances you may encounter wavy lines on the screen. These are usually 1/4" thick and move in a vertical motion. This is caused by a noisy electrical feed from a wall outlet. If you change your vertical refresh rate under display properties to 75Hz this effect should disappear.
Small dot on screen:
TFT panels by their very nature are difficult to manufacture. KDS uses displays from various suppliers including; Samsung, Hyundai and Acer, who all guarantee the display to be 99.99% free from pixel defect. What that means is a 15" LCD display can have up to about 6-10 broken pixels and still be considered "acceptable". Broken pixels are individual pixels, which are stuck on, off, or as one particular color. Depending on their location and intensity, they can be next to invisible or obvious. This is common to ALL TFT screens and is not considered a defect by the screen manufacturer.
Dark areas:
Retail TFT LCD monitor products employ the use of a single TFT backlight. This backlight is responsible to deliver full edge to edge brightness across the screen. On some models the screen may not be as bright in the center or the edges as other areas. This is due to the design the actual panel manufacture took to keep costs down so that the TFT panel is affordable for the retail environment. Prices of TFT panels vary according to added features (TV tuner, SVIDEO etc.). They also vary according to the number of backlights that are in the panel. High-bright monitors with multiple backlights can cost upwards of $2,500.00 for a 15" panel.

Home Theater Screen Size and Seating Distance

Having just the right screen size and seating distance is very important when constructing a home theater room. A common mistake many people make is having a screen that is too large and a room that is not large enough to support the view. The last thing you want is the people in the back row squinting to see the screen, or those in the front row getting a headache from screen overload. Fortunately, there are calculate that take out all the guess work out.
If you're a person who likes to put the pen to the paper, there is a simple math formula you can use to calculate everything as well. If you don't have a TV or screen picked out yet, you'll need to measure the distance (in inches) from where the farthest seat will be placed, all the way to where you plan to put the TV/screen. Once you have the measurement, just plug it in to the following formula:
Screen Size = [Distance (inches)] / 1.6
As an example, if you had 10 feet (120 inches) of seating distance, you would need a TV or screen that is around 75 inches. Should you already have a TV / screen in place, I have a formula for you to help you calculate seating distance. Just take the size of your TV or screen (in inches) and plug it into the following formula.
Seating Distance (ft) = [Screen Size (inches) x 1.6 ] / 12
As an example, if you had 120" TV/screen, you would need around 16 feet in in distance from the screen.

Best Home Theater Seating Ideas

One of the factors you need to consider is which size of seats do you want in your theater room. You could have individual seating, similar to what you would find at a movie theater, or you could resort to traditional family room/living room seating by having multiple types of sofas. Ultimately, you want to create the most comfortable environment, and that can be done by having single seating, loveseats, sectionals, recliners, sofas, or even convertible sleeper seating.
Once you've determine the style/size of seating, you will need to also evaluate what fabric upholstery for your home theater seats is going to be the most comfortable. There are four main types of fabrics that you'll find on theater seating: leather, fabric, suede, and microsuede. This decision is truly a matter of taste and comfort. Find the fabric that feels that best for you and suits the look to create the best home theater seating placement.
You are probably trying to drive comfort in your theater room, and the seating is a key element of this end objective. In order for that to happen, here are some other features that you can find in seating options: Cup Holder - most people will have some form of beverage while spending time in front of that theater screen. For your comfort, you may want to find home theater seats that have massages, lumbar support, detachable pillows, and even heating capabilities. If you are prone to eating while watching TV, have small children, or have pets, then you are probably well aware of the possibility of having stains on your furniture. Certain seating options will have stain resistant material options.
In addition to the seats themselves, lighting will prove to be very important in the home theater seating design of your choice. You should consider installing a light dimmer switch in this room so that you can get the light quality just right to avoid glares on your TV or even create a movie-theater like environment when watching a flick on your home projector. Lighting is just as important as the seats.
Lastly, think of the other decorations that will make for an optimal home theater seating experience. Do you want a classic feel with leather seats, dark walls, and sconces? Do you want a modern feel with bright colored chairs and wall paint with some unique artwork on the walls? Although you can create any look you want, browns, blacks, beiges, and creams are the most universal looks for seating in a home theater. You don't want the look of your home theater seats to take over the room, when the focus should be whatever is playing on the big screen

The Era of Wireless Audio and Video Experience Is Coming

With the increasingly fast pace of life today, people have to bear the greater pressure of work in exchange for more comfortable life. There is more use of portable headphones, portable speakers, laptop and ac adapter, home audio and video systems and other mobile audio and video devices. Out of the wire bundle is an urgent problem to enjoy the freedom of mobile life. In the past two years, wireless audio and video into public view. However, due to the lack of a correct understanding of wireless audio and video products, many users believe that the era of wireless audio and video products is yet to come. In fact, wireless audio and video products are getting into public life, to the major businesses of the new exhibition from the major audio and video. T
The earliest wireless device can be audio broadcast. The most popular wireless audio transmission technology includes: bluetooth, Wi-fi and air play. Each transmission technology differ emphasis applied to wireless audio and video products also are different, with different features.　　
WiFi's biggest advantage is the high transmission speed which is up to 54Mbps. In addition,its effective distance is very long, with fast speed, high reliability, easy integration with existing wired Ethernet networking lower cost. Currently, the smart home industry is in full swing, the wireless WIFI technology, as well as the extensive application of the Internet will make the home control becomes more automated, intelligent and humane, and bound to the smart home onto a stage of rapid development. Smart structures can not be separated from the wireless home audio and video products.
A soft spot for Apple products, consumers must be AirPlay wireless technology to understand. AirPlay wireless technology is launched by the U.S. Apple WIFI-based wireless technology. AirPlay wireless technology allows users permission speaker dock, av receiver and stereo system and other equipment to use wireless synchronization of your entire iTunes library to play music.
Bluetooth technology is a short-range wireless communications technology. Classic Bluetooth there are some limitations of narrow bandwidth and large delay doomed it can not meet a large the HD audio documentation of the amount of information transmission, so that the sound quality of Bluetooth audio products has been denounced by professional home. Bluetooth 4.0 introduced its low-power energy-saving, high-bandwidth, 3ms low latency and long-distance transmission and other various characteristics are ideal for mobile high-quality audio products. My Love Electronics recently introduced the world's first Bluetooth 4.0 headset woowi HERO, to fill the vacancy. Bluetooth speaker has been to occupy an important position in the field of wireless speakers, portable and wireless transmission.
According to the analysis of the three mainstream wireless audio and video technology and related products, users can more in-depth understanding of wireless audio and video technology, and in accordance with the actual situation of the individual to select the most suitable wireless audio and video products. Whether you are a student or office worker, wireless audio and video products can bring a new audio-visual experience.

What's So Good About Home Audio Visual Systems?

Everyone would love to have a dedicated room in the house especially designed for recreational and entertainment purposes, however not many people even dare to dream about purchasing an audio-video system because these devices are considered not only very expensive, but also hard to connect together. In addition, there is also the misconception that you will make a large investment in a home theater system that you can only watch TV on or listen to your favorite music. However, nothing can be further from the truth, as these systems can provide a lot of fun for all the members of the family, regardless of age or gender.
For example, if you are enjoying a fine Sunday afternoon and your friends decide to come over and you did not finish watching a movie, you can prepare some snacks and continue watching that movie in the kitchen, if you have an audio video distribution system. At the same time, you can make a fine recording of your family or one of your members playing the piano for instance and send the perfect gift to an aunt or uncle that you did not see for a long time. As you may notice, the audio video systems allow you to do a lot of activities with the members of your family and friends, even though it is recommended that an adult is the one responsible with making the necessary adjustments to the devices.
Another advantage of the audio video systems, mostly on the professional devices, is the flexibility they provide. Most of the speakers, subwoofer, cables and the TV have handles or wheels on the table support, that allow you to easily move them around the room for the moments when you want to rearrange their position or clean up the place. In addition, the professional home audio video systems are usually more resilient and provide an extended warranty that can prove to be very useful in case of accidents.
However, one of the most appreciated benefits of an audio video system is the possibility to choose to watch what you want and exactly when you want it. Moreover, if you invest in a whole house audio video distribution system, you will no longer have any fights in the family regarding a certain TV channel. Every member will be able to watch their favorite programs in any room they want without disturbing the others.

Home Theater Room Shape and Size

The shape of your home theater is a very important decision. A properly shaped room will dramatically improve the acoustics and help you get the most out of your sound system. Often, audio problems such as difficulty understanding the dialogue are a result of improper room design. With these simple tips you'll be able to design the properly sized room, achieve the most out of your audio system, and build an affordable home theater.
If you've ever done research on acoustical science and optimal room setup you'll quickly become inundated with technical jargon and discover that many companies want to charge you a fortune to configure your room. You don't need to hire a pro to get the best results... In order to keep your home theater in budget all you need to do is follow this simple rule and you will be off to a great start. The key is this: avoid building your theater in a square-shaped room. Sounds simple...well it is. When your room is a square, the sounds emitted from your speakers "build up" and bounce off the walls, creating an effect similar to "singing in a shower". However, if you don't have this option and you decide to keep your room square you can minimize this affect by placing acoustical panels, furniture, or other padded surfaces in the correct locations which will absorb this reflection and dramatically improve your sound quality. And...you should always carpet your floors! Hard, flat surfaces should be avoided, as they will also contribute to standing waves. If you can go the rectangular route, the ideal ratio for your room shape is as follows

Room width should be 1.6 times the height and the length should be 2.6 times the room height...

This acoustic room ratio is deemed the perfect ratio by many and it will give your room the very best acoustical properties. The dimensions of my home theater are 22 feet long, 12-14 feet wide, and 8 feet high. Using the perfect ratio, it recommends my room width be 12.8 feet (1.6 times my 8 ft ceiling) and my room length be 20.8 (2.6 times my 8 ft ceiling). My room is pretty close to these measurements; I'm about a foot longer in recommended length and my room width is right in the middle. I've minimized the hard flat surfaces with several techniques. I've broken up the large side walls by making the front of my theater narrower than the rear and incorporating trim on the walls which breaks up the flat surfaces. The ceiling height also varies, ranging from 6 1/2 to 8 feet. I was able to accomplish this by the use of a rear riser and creating two boxed ceilings surrounded with perimeter soffits. These simple and effective design considerations tremendously contributed to my room's acoustical properties; and I was able to save money in the process by doing it myself.
Achieving good room acoustics does not need to be a budget breaker. By following these simple rules on room shape I was able to design my theater properly and achieve amazing results. The room size allows me to comfortably seat 7 and also accommodates a large 100" screen with two rows of seating, the second row seating 4 on a 12-inch riser platform. The screen size is proportional to the room size and the acoustics sound amazing! In fact, I had a friend bring over his high-end speakers and I did not even notice a difference (he calls my speaker's entry level)... I hope you find this article informative. Other important considerations we'll discuss include speaker placement, screen size, and how to determine the proper seating distance.

Eliminating that Terrible Hum From Your Home Theater Speakerss

You've all heard it, that dreaded 60Hz hum through the speakers of a home theater or house audio system. Hopefully you heard it at a friend's house and not your own. It can drive you completely nuts. You may have even tried, unsuccessfully, to fix the little noise problem. That can make you even more crazy. What causes that horrendous noise through your speakers?
More often than not humming through your speakers is caused by a grounding problem. There are three main ground problems that cause problems in an audio / video system. These are ground loops, improper grounding and lack of a ground altogether. The other possible culprits that can cause noise are bad cables, a faulty piece of equipment or electrical noise from a lighting dimmer or electric motor. There are steps you can take to troubleshoot the noise and eliminate it from you theater.
The first step is find out where it is coming from. Disconnect your source and display equipment from your receiver or surround sound processor. If the noise stops, connect them back to the receiver or processor on at a time until the noise returns. When the hum comes back, you found where the noise is entering your system. Note that if you are connecting remote equipment, such as running the signal from your theater room DVD player to the TV in the bedroom, your chances to pick up noise increase dramatically. With such long runs, noise can be induced into the long cable runs from adjacent electrical wiring. It is also easy to create a ground loop, because the equipment is plugged into two different, widely separated outlets, on different electrical circuits.
If the noise is caused by a cable box, the noise is likely caused by the cable TV ground. To test this theory, disconnect the incoming cable TV feed to the rear of the cable box or TV while they are still connected to the rest of the system. If the noise is eliminated by disconnecting the Topping TP20-MARK2, the problem is the cable TV ground. You can electrically decouple the cable TV feed from your system with a ground breaking transformer. These are available from many sources. Be advised that many newer, digital cable TV systems require any device in the signal chain to pass a full 1,000 Mhz. Some of the older ground break transformers will not do this. Be sure to check the specifications of whatever device you are purchasing to verify it will pass the digital cable TV signal.
If the noise is from your projector, TV, or monitor, it is most likely caused because the video display device is plugged into a different outlet than the other a/v equipment. It could be on a different circuit as well. These circuits may have two different ground potentials. That is, the resistance to ground is different on each circuit. A difference in resistance to ground from one ground point to another can cause the dreaded ground loop. If you get a ground loop, current flows between the two components. If the current flows through the components internal audio signal ground, you will get a hum.
You can use an isolation transformer, similar to the type used for cable TV ground problems, to eliminate the electrical connection from one component to the other. These transformers are inserted in line with the audio signal connection between the two components. If there is no audio connection between the components, the problem may be current flowing through the video portion. In this case, a video isolation transformer should be used to eliminate the ground loop.
Sometimes power conditioners will stop noise problems by placing equipment on Chengsheng HS-9004 2-CH Amplifier, electrically isolated outlets. This is done using isolation transformers. Sometimes this is ineffective however, due to the differences in internal construction of different power conditioning equipment. Some safety regulations, such as UL 1950, specify that an isolation transformer is only allowed to isolate the hot and neutral wires; the grounding wire must be passed straight through. If this is the case, the ground loop problem may still exist because many communication circuits are connected to the grounding conductor and not the neutral. In this case, the isolation transformer, or any power conditioner or UPS with an isolation transformer will have absolutely no affect on the grounding problem.
The noise may be generated externally, from a dimmer or refrigerator compressor for example, and coming in through the main power input on the audio video equipment. In this case, a high quality power conditioner may be effective in reducing or eliminating the noise problem. You may also find that one of the signal interconnecting cables in your system is faulty. This can also cause noise problems. Check for this by swapping the cables with one that you know to be good.
You can solve most noise problems in your home theater or multi room audio/video system by taking the systematic, step-by-step approach. Work your way up the signal chain, eliminating each piece of equipment as you go. If you have nothing connected to your speakers except the speaker wiring, and they still hum, the problem is noise induced into the speaker wiring from adjacent power cables. Other than that case, most problems are caused by ground problems, which you can find, and solve, if you take it one step at a time.