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This is called Ke yt r u d a , which can be purchased from Hong Kong, and is called Jian Cai De in Chinese. Already? I've been able to buy it through Hangzhou Wuzhou. They have contacted doctors in Hong Kong to conduct remote consultations with patients, so that patients can get a prescription for the medicine without going to Hong Kong, and they are responsible for delivering the medicine to the patient's home after the consultation. If you can't go to Hong Kong to buy it, it's quite convenient to go to them to buy this medicine.
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1. Brightness
This is an adjustment item for every monitor. Adjusting the brightness of a monitor means adjusting the brightness of the image displayed on the monitor. A monitor's brightness has a significant impact on the way a user's eyes perceive the images displayed on the monitor. Since a monitor can display a certain range of brightness, not unlimited display. When adjusting the brightness, it is important to consider the range of brightness that your monitor can display and make the best adjustments.
If you turn up the brightness of your display, you can see the colors in the darker parts of the image. If the brightness of the monitor is lowered, the image will be more of a bright layer effect.
2, Contrast (contrast)
The so-called contrast, that is, the brightest white and darkest black between the different brightness levels of measurement. In general, the correct contrast ratio displays vivid, rich colors.
If you turn up the contrast on your screen, you'll get a clearer, crisper image, but you'll also get an image that's a little out of the range of what your monitor is capable of displaying. On the contrary, if the monitor's contrast is lowered, the image levels will become less obvious, but the color levels that can be displayed will be richer. Adjusting the contrast of the monitor has a significant impact on the display of the image, and the reader can get the actual difference after adjusting the contrast from the image above.
3, Color (color temperature)
Color temperature is also an image of the display has a considerable impact on the variables, color temperature (unit: K) is simply a standard black body (eg, iron) heated, when the temperature rises to a certain degree when the color begins to rise from dark red, light red, orange, yellow, white, blue, white, blue, and gradually change the situation. The use of this light color change characteristics, to locate the color of the light source.
In general, the sRGB (Standard RGB) color temperature of the Windows system is set at 6500K; while the color temperature of the image processing for printing purposes is set at 5000K.
In addition, the human eye's judgment of the color is affected by the background light source at that time, which is quite serious. Therefore, in addition to the importance of adjusting the color temperature of the monitor, the background lighting also has a certain impact on the monitor's image display. For example, if the white color temperature of the background lighting is not the same as the white color temperature defined by the monitor, then the color shown on the monitor will be different from the actual input signal color.
4, Picture (graphics)
This is also a very basic adjustment option. This option generally includes adjusting the horizontal and vertical position of the monitor's image, as well as the size of the display area where the monitor displays the image horizontally and vertically. Generally speaking, when users use the monitor for the first time, the screen display position will be incorrect, or the vertical direction of the screen is too large, the horizontal direction of the screen is too small, and so on similar situations occur. This option is to allow users to adjust the screen position of the monitor to display correctly. In other words, users can adjust this option to get the most suitable screen size and display position.
5. Geometry
The Geometry adjustment option is mainly for users to adjust the geometric distortion of a display.
This option generally provides options such as pin-cushion distortion, rectangular distortion, trapezoidal distortion, and barrel distortion. For example, trapezoidal distortion is a condition where one side of the image on the screen is larger than the other, and barrel distortion is a condition where the sides and top and bottom of the displayed image are irregularly distorted and uneven. Pin Cushion Distortion is when both sides of the image are bent to the same side. This adjustment option is mainly for users to adjust the geometric distortion of the image when the image is distorted as mentioned above, so that the monitor can display the image normally without any distortion.
6, Moire (water ripples)
Generally, it is also known as the mesh error effect. Mainly due to the cathode ray tube point distance and the picture of the signal generated by the network error phenomenon caused by the screen will have a fuzzy similar to the waves of the ripples of the pattern.
The ripple pattern may vary depending on the pattern shape, monitor size, contrast, brightness, and other input signal characteristics. In general, the water ripple adjustment option is not available on many monitors, but is more common on higher-end monitors. This option is primarily designed to allow users to make adjustments when experiencing water ripple conditions.
Alternatively, some monitors also offer the option of Converge, which refers to the ability of a monitor to correctly align the primary colors of the red, green, and blue portions of the screen image. Generally speaking, if the monitor's color convergence problem occurs, users will usually see blurred color stripes at the edges of the screen, or other colors appearing near text or graphics that should be white.
7, Degauss (demagnetization)
Every CRT monitor will be affected by its own magnetic field, the earth's magnetic field or the surrounding environment, more or less will produce the phenomenon of uneven display color, generally speaking, this is known as magnetism.
If the monitor is magnetized more severely, it will produce color shift and water ripples and other problems. Therefore, when the monitor is turned on, there is an automatic demagnetization function, which is designed to solve this problem. Generally speaking, if you want the demagnetization function of the monitor to achieve greater effectiveness, it is recommended to adjust the resolution of the monitor upwards and press the demagnetization button or press to re-activate the monitor after half an hour of powering on the monitor or 30 minutes from the last time you used the demagnetization function, in order to make the demagnetization function have greater effectiveness.
8. Property
This item is to provide the user with the current operating status of the monitor.
This item is to provide the user with the current status of the monitor. For example, this monitor is currently running at 1600x1200/65Hz. The function of Recall is to return the monitor settings to the original factory settings.
By the way, the scanning frequency of a monitor's operation is also very important to the user's perception of the image. This is because if the monitor's scanning frequency is too low, the screen will produce unstable images (when the monitor's scanning frequency is below 70 Hz, most people will experience flickering and eye irritation). Usually a person's corner of the eye for the flickering phenomenon is more sensitive than when looking directly at it, users may wish to check whether their own monitor has the same situation. For brighter images, or in a room with low light, this phenomenon will be more obvious. Therefore, we recommend that readers not only adjust the monitor's options, but also adjust the vertical scanning frequency of the monitor in the software program to avoid uncomfortable feelings or eye damage.
Also, many monitors come with a Recall option, which restores the monitor to its factory defaults, and many monitors come with this option so that users don't have to worry about restoring initial settings after making adjustments on their own. In addition, some monitors with user-defined modes can also define the Recall function to revert to a previously user-defined and stored display mode, which is also a convenient feature.
It is believed that after reading the above introduction, readers have a better understanding of the adjustment options provided by general monitors. Although not every user has a high-end or professional monitor, readers are still able to adjust their monitors to an "acceptable" display system peripheral by making their own adjustments, which is also a good thing.
The inside of a picture tube is a vacuum. Therefore, it is impossible for moisture to get inside the picture tube. If the picture tube does leak, the failure is serious and it is impossible to recover automatically.
So, in your machine, it would be a typical failure of moisture in the tube holder, and high voltage firing.
The moisture in the tube socket will cause a drop in focusing voltage and a blurred screen display. After powering on the machine for a while, it slowly returns to normal. This is a common failure of tube TVs and monitors. For minor ones, you just need to turn on the TV for a long time to disperse the internal moisture. For serious ones, you need to open and clean the tube holder. Or replace the tube holder.
As for the snapping sound inside the machine you mentioned, it should be high voltage firing. It is also caused by moisture. There are several cases of high voltage firing, if it is firing inside the tube holder. Then in effect your monitor is the same problem: the tube holder!
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Monitor fuzzy causes and processing
Screen display fuzzy is a variety of monitors is one of the common failures of the three main reasons:
One: is the transportation process or use of vibration to make the focus potentiometer of the FBT (line output transformer) loosened or shifted to add to the CRT in the CRT, the FBT (line output transformer), the FBT (line output transformer), the FBT (line output transformer) and the FBT (line output transformer). Focusing voltage added to the CRT changes (deviation from the factory debugging the best voltage value), resulting in screen fuzzy;
Two: is the use of environmental humidity, so that the CRT tail plate focusing on the pins of the discharge ring (semicircular sphere) rust corrosion, in the CRT just power on the phenomenon of fuzzy;
Three: is the CRT tube due to the manufacturing process or the CRT cone glass shell of debris and the focusing (focuse) poles. Focusing (focuse) pole and accelerating pole (G2) between the electrostatic accumulation of dust, the formation of pole resistance and make the screen appear serious fuzzy phenomenon.
How to determine what causes the blurring of the screen?
First of all, from the degree of screen blurring, if the blurring phenomenon is relatively light, only the character outline thicker, and the handwriting is still recognizable, most of which are caused by the first reason;
If the characters of the large area of serious blurring, the screen a white halo, the characters can not be identified and adjusted the focus potentiometer on the FBT when the brightness of the screen with the change is the third reason;
If the CRT has just been turned on, the screen can be used to display the screen. p>If the CRT just start fuzzy, with the extension of time, the screen characters more and more clear, which is usually caused by the second reason.
Figured out the screen fuzzy reasons, how to troubleshoot the phenomenon? For the first case, open the cover, fine-tune the FBT in the focus (focuse) potentiometer can be troubleshooting. As for the tail plate on the focusing pin discharge ring corrosion treatment, the general use of anhydrous alcohol to clean the discharge ring and the tail base on the electrode plug and socket, such as the discharge ring corrosion is serious, you can replace the tail base parts. The third reason for the screen fuzzy treatment is: remove the CRT tail plate, the CRT on the high-voltage cap in the 24KV high voltage with a multimeter pen line (preferably with better insulation properties of the digital multimeter) led to the CRT focus board socket, open the monitor AC power supply, with a grounded pen line on the acceleration pole (G2) plug instantaneous discharge 2 to 3 times (preferably on the CRT G2 plug with a short line with an external protective sleeve). (It is best to lead out the G2 plug on the CRT with a short wire with an external protection sleeve, and conduct instantaneous discharge operation on the lead wire to the ground). Generally 2 to 3 times after the discharge process will be able to focus (focuse) and acceleration pole (G2) between the two electrodes of the dust pole resistance breakdown. After restoring the original circuit, observe the screen characters or graphics display clarity, if necessary, the appropriate adjustment of the FBT on the focusing potentiometer can make the fuzzy troubleshooting. This method is often referred to as "playing Acking method", the operation involves high voltage, should be cautious, remember to protect personal and equipment safety.
It should be noted that the above screen display fuzzy fault, and does not include those such as the accelerating pole (G2) voltage adjustment is not appropriate, brightness, contrast potentiometer adjustment position is not suitable for the screen caused by dissonance.
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Maintenance of CRT high-voltage ignition failure
The CRT high-voltage ignition failure is also one of the most common problems in the maintenance of the monitor. The main manifestation of the fluorescent screen grating appears many irregular bright spots, serious points into the line, and sometimes can be heard in the machine "squeaking", if the fire is serious, will cause the image blurred, and may be in a few seconds or minutes after the disappearance of the phenomenon of the grating. High-pressure tube ignition causes and parts of more, mainly: tube seat high-pressure ignition; tube high-pressure nozzle or high-pressure cap ignition; high-pressure package high-pressure lead end ignition; focusing potentiometer internal poor contact ignition and so on. Below we will respectively say its maintenance methods
1. Picture tube seat ignition maintenance Picture tube seat ignition is generally in the focusing pole. The reason for the internal fire of the picture tube holder is mainly caused by the monitor using the environment is too humid or long-term use. As the focusing pole of the voltage is very high in the 4KV ~ 9KV between the repair method is to turn off the power supply, the tube holder from the tail plate removed, with a knife or fine sandpaper to scrape the rust of the tube feet, and then cleaned with pure alcohol, and the tube holder plastic walls of the rust cleaned with alcohol, and then dry with a blow drying, re-installed can be.
2. High-pressure nozzle of the picture tube or high-pressure cap around the fire The high-pressure nozzle of the picture tube around the fire, in addition to environmental humidity, there is a high-pressure nozzle of the picture tube and the cone between the glass contact is not tight or impurities. To repair the high-pressure nozzle fire, first of all to its discharge, the method is a large wooden handle flat knife, inserted into the high-pressure nozzle many times in contact with the base plate can be, and sometimes you can hear the "pop" discharge sound. Then remove the high-voltage cap, check the high-pressure mouth and high-pressure card spring with or without rust, and its surrounding signs of ignition and ash accumulation. If so, in accordance with the former method will be cleaned up, and then blow dry with a hairdryer, pay attention to the temperature and time, so as not to show the tube localized overheating and cracking. Then in the high-pressure mouth around the uniform application of some butter, and then fasten the high-pressure cap can be
3. High-pressure package and focusing potentiometer fire High-pressure package fire can be caused by the grating fuzzy or no grating. If the high-voltage package itself is on fire, then only a new one. If the high-voltage package of the lead end of the fire, available pure alcohol to wipe it clean, drop a little insulation varnish can be. If the high-voltage package on the focusing potentiometer fire, you can turn off the machine after adjusting the focusing potentiometer many times, to see whether it can make its internal contacts contact better. If not, it is best to replace it
Now, the popularity of LCD monitors is increasing, but many people still have some misunderstandings in cleaning the LCD display.
LCD screen surface is much more fragile than ordinary CRT monitors, it is best to choose a special screen wipe. This cloth has good water absorption and good dust absorption, dust will be easily adsorbed to the cloth, and in the repeated wiping will not re-stick to the screen, and will not make the dust particles scratch the LCD screen.
Can I clean with water? Theoretically, there is no problem to clean the screen with water, but be sure to wring out the water-soaked cloth and use it in a somewhat damp state, otherwise the excess water will easily flow into the gaps of the monitor bezel when wiping, which may result in an inconsistent screen tone, or a splash screen.
Can I use alcohol to wipe my screen? Yes, but the amount should not be large, not too many times, do not use too much force, and it is best to use anhydrous alcohol, so that the screen does not produce erosion. In fact, after all, the best way to wipe the screen cloth and special cleaning agent, wipe to disconnect the power supply.
How to clean the LCD case? There are many friends will choose to use laundry detergent and rags to clean the LCD shell, this method is not scientific. Recommended use of toothpaste, squeeze a little bit on the rag, wipe the stubborn stains of the monitor casing, guaranteed instant results.
A friendly reminder: Be sure to clean the LCD screen with the power off and cooled. I used wet paper to clean it when I turned it on, and now when the LCD screen is turned on, there will be a watermark on the item, such as the icon of the IE window, and there is a watermark on it, so I've learned a lesson! This is the lesson ah, remember @
Cleaning the LCD screen of the three misunderstandings
For notebooks, digital camcorders and digital cameras, the LCD screen is simply the life of these digital products, should be properly maintained and cared for, to try to prolong its service life. However, the use of a long time, some of the problems about the LCD screen cleaning also came up. In terms of computers, digital camcorders, digital cameras, if the LCD screen is broken to replace the LCD board price of the entire digital equipment costs 2 / 3 or more, so here just focus on the LCD screen wipe and maintenance program.
LCD screen material: the surface of the LCD screen appears to be a solid black screen, in fact, in this layer of the screen manufacturers will add a layer of special coating. The main function of this layer of special coating is to prevent users from using other light sources of reflection and glare, while strengthening the LCD screen itself the color contrast effect. However, because the coating material used by each manufacturer is not the same, of course, its durability will also be different. Therefore, the user in the cleaning, never feel free to use any alkaline solution or chemical solution to wipe the screen surface. There are two types of LCD panel smudges, one is due to airborne dust that accumulates over time, and the other is due to fingerprints and grease left behind by the user inadvertently.
Because of the complex physical structure design of the LCD panel itself, when wiping the LCD panel, do not use unknown cleaning solutions, not to mention the use of water and alcohol solution. Here are three misunderstandings:
Misunderstanding one, with a soft cloth or paper towel to wipe the LCD screen
Never use a cloth and paper towel to wipe the LCD screen, it is easy to scratch the "delicate" LCD screen. For the first type of dust, we can use deerskin in the LCD panel gently wipe, you can generally choose high-grade glasses cloth, but the effect is not the best. Fingerprints and oil can not be as easy to remove the former.
Myth 2: Using water to clean your LCD screen
With water, it's very easy for the liquid to drip into the LCD monitor and inside the device, which can cause the device's circuitry to short-circuit, which can burn out expensive electronic equipment. For fingerprints and grease, water is useless as usual.
Myth three, with alcohol and some other chemical solvents to clean the LCD screen
Generally speaking, alcohol is a commonly used organic solvents, can dissolve some of the dirt is not easy to wipe, if only used to clean the display shell, there is no adverse effect. But do not use alcohol to clean the LCD screen, because nowadays the LCD screen, are coated with a special coating on the screen, so that the screen has a better display effect, once the use of alcohol to wipe the monitor screen, will dissolve this special coating, the display effect of the adverse effects.
With chemical solvents is even more undesirable, this chemical agent on the "pride" of the LCD panel is simply devastating, so only to choose a safe, effective cleaning agent is the "right way".
LCD special cleaning fluid use (Patriot special LCD cleaning fluid as an example)
Here to teach you how to correctly use the Patriot special LCD cleaning fluid method:
First step: take out the LCD special cleaning fluid hold down the top of the 2-3 times evenly sprayed on the LCD screen (the specific dosage of please refer to the size of the LCD screen).
The second step: take out the product comes with a special very fine machine dimensional cloth, carefully wipe from the center of the screen outward. Wipe until the adhesive sprayed on the LCD screen is clean.
This special cleaning solution for LCDs will not harm the coating on the outside of the LCD screen and is effective in removing stubborn fingerprints and grease marks.
Step 3: You can use the very fine machine-vision cloth that you have wiped the LCD screen with to wipe the body, so you can utilize the waste. Oh, it's still a luxury to wipe the body with a professional LCD screen cleaning what very fine machine dimensional cloth, so it's still recommended to use the used to wipe enough.
Handyman to teach you to clean the LCD display
So how in the world to clean your LCD screen? Let me give you a brief introduction to the following, I hope to play a good effect on your LCD use.
There is a black coating on the surface of the LCD screen that prevents the screen from reflecting when it is being used by other light sources. This special coating, however, is also particularly susceptible to dust sticking to it due to exposure to air and static electricity.
However, because many people do not understand the correct way to clean easy to make the following mistakes: the use of soft cloth or paper towels to wipe, easy to scratch the LCD screen; water to clean the screen, very easy to cause a short circuit of the internal equipment of the display, and the water will be left on the screen, difficult to remove, affecting the effect of the LCD screen; alcohol or other chemical solvents to clean, to dissolve the special coating of the LCD screen, a serious impact on the Viewing effect.
And the correct cleaning method is: gently wipe with buckskin or high-grade eyeglasses cloth to remove the dust on it. For fingerprints and oil on the LCD screen, special cleaners for LCD screens should be used to clean it. Care should also be taken when using the cleaner to wipe from the center of the screen outward until the cleaner on the screen is wiped clean.
After reading our introduction above, you have learned that LCD screen cleaning is not a very difficult thing, it is important to pick a suitable material to scrub the screen. LCD screen is definitely not as you think so "delicate", the survey results show that a small number of consumers using LCD monitors for fear of their own force, method is not appropriate, and would rather let their own display long-term "sloppy", now you can rest assured that boldly go to the LCD screen cleaning. You can rest assured that the screen will be cleaned up.
LCD maintenance and use of skills
In the daily enjoyment of the LCD that distinctive high-grade display effect at the same time, do not forget the maintenance of this extremely important part. LCD only well-maintained, only to be able to long-term trouble-free service for the user. If you already have a LCD or flat-panel display, here are some tips for you very useful. It should be clear that the price of LCD, as long as you follow some simple maintenance steps, you can faithfully long service, in the LCD, the only one gradually consumed parts is the display of the background lighting. After a long period of use, you will find that the screen becomes dull or simply doesn't light up, in both cases, simply replacing the background lighting can bring the LCD back from the dead and make it as good as new.
1. Avoid burning out the inside of the screen
Remember, CRT monitors can burn out because of prolonged operation, and the same is true for LCDs. So always remember to turn off the monitor if it is not in use, or reduce the display brightness of the monitor, otherwise it will cause internal burn-in or aging over time. Once this damage occurs it is permanent and cannot be undone. So be sure to pay enough attention. In addition, if a fixed content is continuously displayed for a long period of time, it may cause some LCD pixels to overheat, which in turn may cause internal burn-in.
To avoid such internal burn-in, the following measures can be taken when not in use:
1) Turn off the monitor when you are not in use;
2) Change the display content on the screen at different intervals (e.g., by running a screen saver program)
3) Decrease the brightness of the monitor to a dimmer level;
4) Display an all-white screen. Display an all-white screen content.
2. Keep the environment humid
All users who have ever had their keyboards damaged by spilling drinks on them know this common sense. Do not allow anything of a humid nature to enter the LCD; when you notice fogging, gently wipe it away with a soft cloth before turning on the power. If moisture has already entered the LCD, the LCD must be placed in a warmer and drier place to allow the moisture and organic compounds to evaporate. Applying power to an LCD that contains moisture can cause corrosion of the liquid crystal electrodes, which in turn can cause permanent damage.
3. Properly clean the surface of the display
If you find a stain on the surface of the display, gently wipe it off with a soft cloth moistened with a small amount of glass cleaner, and do not sprinkle the cleaner directly onto the surface of the display. Detergents entering the LCD will cause the screen to short-circuit.
4. Avoid unnecessary vibration
LCD screen is very fragile, so to avoid strong shock and vibration. LCD is almost the user's home or office in all the supplies in the most sensitive electrical equipment. LCD contains a lot of glass and sensitive electrical components, falling to the floor or other similarly strong blow will lead to the LCD screen as well as CFL The LCD contains many glass and sensitive electrical components. Be careful not to apply pressure to the LCD display surface.
5. Do not disassemble
One rule is to never disassemble the LCD, even after it has been turned off for a long period of time, the CFL converter in the backlighting assembly may still carry a high voltage of approximately 1000V, which can cause serious personal injury. Therefore, never attempt to disassemble or alter the LCD display to avoid exposure to high voltage. Unauthorized repairs and modifications can result in the display becoming temporarily or even permanently inoperable.