Monitor is a device for displaying images from the VGA output. There are several types of monitors, including CRT and LCD monitors. CRT monitors are still using the tube as a current converter to display. While the LCD monitor technology has been adopted as the mercury display cells. CRT monitors are the excess power to touch the screen was much stronger than the LCD. While LCD design offers the advantages of a more simple and portable, slim and flat.
CRT Monitor Pros
1. More accurate colors and sharper
CRT monitors have accurate color or nearly the same as the original. Karna is for this reason designers and photo editors prefer to use the CRT than LCD. In addition, the gradation of color on a CRT is still better than LCD. Pros about the accuracy and gradation of color on CRT monitors can be seen when used to create color-rich designs or play games with high resolution.
2. Flexible screen resolution
CRT monitors can use a variety of resolutions without decreasing image quality. So for gamers barely better using the CRT as the game resolution may be reduced without sacrificing the quality of the display.
3. Maintenance is easy, if damaged can be in service
CRT treatment was much easier than the LCD, LCD be extra careful. In addition, if the damaged CRT monitors can still be serviced, while certainly damaged LCD into the trash. In addition, CRT monitors are more resilient if bumped or touched on display fingers.
4. Free dead pixel, Ghosting and viewing angle
CRT monitors are not composed of the pixels as the LCD, so that obviously will not have dead pixels. CRT monitors can luck from various sides, unlike LCD which depends on the viewing angle specifications. CRT monitors do not know response time, so relatively free Ghosting effect.
5. Cheaper
The advantages in terms of price that makes CRT monitors are still popular. At the same inch size, you can bet the price is more expensive than CRT monitor.
Lack of CRT monitors
1. Electricity consumption
CRT monitor power consumption compared 2X-inch LCD at the same size. 15-inch CRT monitors consume between 60-70 watts of power while the size 15-inch LCD consumes only 35 watts maximum power. The bigger the monitor diagonal size, the greater the power consumption. 17-inch CRT monitor real flat until 100watt power consuming!
2. Depending on refreshrate
In order not tired eyes using CRT monitors, use refreshrate above 70hz. Monitor sie stuck in my 1024 × 768 @ 70hz, enough to make tired eyes if the monitor in front of more than 4 hours. High-end CRT monitors are able to offer refreshrate to 120Hz or more. The higher the better course. This is not true for LCD monitors.
3. Greater radiation
Undeniably, CRT monitors emit radiation greater than the LCD monitor. This radiation has a negative impact on the eye so that the eyes tire quickly, or even create a headache for the sensitive.
4. Vulnerable to distortion, glare and flicker
This is a classic problem for CRT monitors. Distortion effects will be seen when we draw a circle by using coreldraw or other software. Refreshrate too low, causing the monitor to flicker (flicker) and glare (brightness over).
5. Large dimensions and weight
CRT monitors have a large size and heavy, so not suitable for small spaces, because a lot of eating places. Quite often if the monitor for portable hard enough. This bring 19-inch CRT monitor to the 2nd floor using the stairs, quite heavy and tiring is not it?
Advantages and disadvantages of CRT monitors? I was still using CRT monitors, maybe if there is a fortune to replace the LCD is excess and lack of LCD? Following review
You need to know, that in the fly-back there; coil (copper wire coils), Capasitor non-electrolytes, resistors and 2 / 3 fruit trimpot (depending on the size of the CRT). If you look back to the basic functions of the fly-back fly-back who still can issue a high voltage is expressed still functioning.
It's just that there are additional components in the fly-back utilizing high voltage trimpot in the function of the screen and focus, poorly functioning is usually because the trimpot resistance value of which has changed due to a temperature hot enough in the monitor's components.
Trimpot screen not functioning optimally, and focuses on the display indicates you have to replace the fly-back, the experience I have not experienced it very easy to find fly-back the same type and brand, so the solution I get is; take fly-back from the dead type monitor each other (cannibalism), or fly-back ordering the same type but with a fairly expensive price (if any on the market), and the next solution is to transplant FLY-BACK, fly-back transplants planted two fruit means the flyback a monitor.
How to monitor service
First Step Demolition Monitor
Before unpacking the monitor, do not forget to prepare the equipment. This is to avoid the coercion / rape in dismantling the monitor. Prepare also footwear made of rubber so as not affected by static electricity. The first step in dismantling the monitor is to open the monitor casing. Do not be forced because of multiple monitors though somewhat difficult to open the bolt-bolt have removed all. There are several monitors that use the socket to tighten the casing.
Tools and materials required of them; solder, tin sufficiently, a single cable (NYAF) + / - 60 cm, pointed pliers, cutter, flyback isolation and transplantation.
Then open the back cover of the monitor to see the machine with the monitor positioned upside down. It is useful to monitor and clean the innards from dust and cobwebs, to direct attention not to touch the header that led to the flyback CRT tube because it is still storing electrical charge, to remove the electric charge to do a short circuit (short circuit) to Ground through an intermediary cable (how can you see in the first article).
Header off the fly-back "of the CRT tubes are then loose wires (usually red) from the headers, we will essentially put two wires (red color - the fruit fly, 2 back) into a single header. For the preparation of the fly-back graft, short if all flyback feet with wire and soldered wire and provide liaison to the Ground will be connected to the monitor.
Because we will enter into 2 pieces in a single cable then do diminution header cable insulation diameter of fly-back with cut little by little with the cutter (up to the first layer), this was done so that they will be 2 pieces cable can enter into a header.
Tools that you can use for this step is to use a sharp pliers, cutting pliers, cutter and soldering. Use your creativity and initiative in practicing the above steps, because there is no standard way for this case, so
You can get result of a merger Isolation cable 2 pieces to be included in a header for security, given the confluence of the voltage will be high enough.
Next, connect the cable connecting from the legs to ground flyback previously been prepared using solder. Position the additional flyback (graft) in innards safely monitor and if necessary reinforced with wire ties.
Remove 2 pieces cable that ran from flyback (original) to Block RGB (usually called "Screen" and "Focus"), then replaced with fly-back of the transplant. Location of the difference is 2 cable (screen and focus) is on the cable diameter, where one of them more likely to show the difference.
You can isolate the cable screen and the focus of fly-back (the original) which has been removed from Block RGB, because it has not functioned.
Review the steps above before trying to ON the monitor, because the author is not responsible for fatal accidents caused by your negligence in the practice, including:
1. Are the 2 cables into the header of 2 fly-back is correct? , Ensure solid connections and if necessary isolated, and insert the correct headers to the CRT tube.
2. Make sure all the legs of graft in the short flyback's (short circuit) is then connected to the Grounding dg monitor cable.
3. Replacement cable pd screen and focus of the flyback Block RGB (original) with the flyback's make sure not confuse transplant, then the cable insulation screen and focus of flyback (the original) which had not functioned for security.
4. Make sure the status / position in the flyback transplant safe position and strategic (to reach).
Finally, ON following a CPU monitor, adjust brightness and focus the image through a potentiometer on the flyback transplant results
Grounding Process
After the casing is open, do the grounding. Way, connect the screwdriver into the cable. Attach the other end of the cable to ground (zinc). Stick the end of the cable attached to the playback head screwdriver.
Careful!
Although already dead, play back still has a high voltage. Some Capasitor the monitor is also possible to still have the tension that can make you electrocuted.
Damage Tracking
Techniques used in tracking is the technique of localization of damage or focus on a series of blocks or parts of the possible damage. If the power source is connected really well, but the monitor is not displaying anything when switched on. With the help of a set of system units and certain video card works fine what symptoms occur when power ON / OFF switched on. From these results we can analyze what parts of the problem
Looking for Damage In Block Power Regulator
Symptoms: The indicator light off, the screen dark.
Tracking Damage in Horizontal Arrangement
Symptoms: The indicator light of life but a dark screen
In general, the horizontal circuit functions to generate high voltage. The circuit is composed of horizontal horizontal oscillator, horizontal drivers, and reinforcing horizontal. Oscillator not generate signals or voltages horizontal and vertical deflections needed to set the scanning lines on the CRT screen evenly across the surface. Horizontal deflection signals regulate movement of the electron beam path to the left to right / horizontal scanning direction, while the vertical deflection signals regulate the way from top to bottom.
Horizontal oscillator signal is amplified by the driver before entering the horizontal horizontal amplifier. The duties and functions of the horizontal amplifier is to produce a voltage with a certain shape and amplitude that will be distributed to the horizontal deflection. In addition, will also produce high voltage for the tube. In the series of horizontal, high-voltage power circuit serves to raise the voltage between 10 kV - 50 kV. Prior to this high voltage into the anode, leveled CRT / rectified first through a high voltage diode (diode HVREC). That must be remembered in the horizontal improvements we must use the CPU.
Block and Flowchart
RGB Arrangement
In general, the circuit functions to adjust the RGB signals as well as strengthen the color difference video signals. RGB series is a very important role in regulating the colors on the CRT screen. This circuit produces three primary colors is called the primary colors R = Red, G = Green, B = Blue. While the colors are produced after mixing the primary colors is called a secondary color or mixed colors.
Pin Conector
Damage to the connector can also be fatal, including a basic color, for example, only blue, red or green color certainly not normal. Can also result in no display on the monitor screen. So to overcome our stay open is socket and see if there are broken wires (this only applies to the monitor that has a connector that can dismantle pairs), and to monitor the connector can not be dismantled pairs then we live to buy the data cable and reinstall it according to its structure .
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