TV

CRT :

The cathode ray tube (CRT) TV or conventional TV has a vacuüm tube where the electrons are controlled to display the image. The TV screen is coated with semiconductor material named phosphor. The electrons are emitted from the electron gun. The fired electron heats up the phosphor material and forms the picture. The conventional TVs are large in size and radiates more heat. Conventional TV technology is used in different display units like computer monitors, oscilloscopes, radars, etc.

Plasma :

Plasma TV displays the image by ionization of gases like xenon and neon. Plasma TV comes with large display and high resolution screens. Due to ionization, it consumes more power. Fast moving pictures can be seen clearly in plasma TV. The depth of colour on a plasma screen is brilliant and High Definition TVs are available with plasma screens.

LCD television :

LCD (Liquid Crystal Display) TV uses LCD technology to create images. A liquid is filled in between two electrodes. When we pass electric current to the electrodes, the crystals in the liquid emits light which in turn forms an image on the screen. The LCD TVs are lightweight and thin when compared to conventional TVs. The resolution of the LCD screen is more and produces more vibrant colours than a CRT TV.

LED television :

An LED-backlit LCD display is generally called as LED TV. The normal LCD TV uses a cold cathode fluorescent (CCFL) for back lighting whereas an LED TV uses LED lights. As LED consumes less power, the LED TV is cost efficient and eco-friendly. The screen resolution is better in LED TVs. The viewing problem is removed in LED TVs and screen burn out issues do not occur in LED TVs. A true LED with OLED (Organic Light Emitting Diode) screen is superior to LED-backlit LCD display TVs.

Do You Recognize the 5 Early Warning Signs of TV malfunction?


1. The screen burns (Having the still images persist for a longer duration) on Tvs

Reason: Still images in the screen persist on the screen due to prolonged periods of displaying same pictures. This burns out the part of the screen permanently due to repeated image. This is one of the most common problems in plasma TV, LCD TV, and LED TVs. Example: TV used for CCTV surveillance and ATM display Units.

Remedy: Don’t play the still images for a longer period of time. Change it periodically.


2. Malfunctioning due to lightning and thunderstorm.

Reason: It could receive a huge charge due to striking thunderstorm.

Remedy: It is recommended to remove power plug point and cables from the TV sets during thunderstorm.


3. Malfunctioning due to voltage fluctuations.

Reason: The television sets do not work properly due to voltage fluctuations of your power supply. This affects the internal voltage range of chips and leads to a malfunction.

Remedy: Start using a voltage stabilizer depending on the power watts of your TV sets. (To check the power watts of your TV, look backside of the unit). Typically an LED TV has 500 watts. Call us to know the required stabilizer for your TV sets.


4. Malfunctioning of outlets like USB port, AV pin and DVD outline.

Reason: Non-usage of these outlets will lead to lose the contacts of internal circuits and it leads to malfunction.

Remedy: Use these outlets occasionally once in a month in random fashion.


5. The television unit gets heated due to prolong usage.

Reason: Continuous usage of television sets leads to generate more heat on the surface of television units.

Remedy: Don’t use the television sets continuously for more than eight hours a day. Switch off the unit for half an hour to cool down your device. This problem does not exist for the televisions placed in rooms with the temperature of a minimum of 22 degree Celsius.


What Everybody Ought to Know About TV?


1. Radiation is more in CRT TVs and very less in LCD and LED TVs.

Advantages: The power consumption is also very less for LCD and LED TVs and more for CRT TVs or Conventional TV.


2. The viewing angle problem is very less in LED TVs.

Advantage: If you feel the pictures are different in various angles, better buy an LED TV. Maintain 10 to 15 feet distance between the TV and user.


3. Place or mount the LED TVs away from children.

Advantage: As the LED TVs are very slim in nature, these display units should be mounted above the reach of children to avoid any accidental damages of the unit.


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