Of late, Televisions have become the most common form of indoor entertainment. Till recently, what was merely a symbol of luxury available only to the elites, TV is being used by all, irrespective of whatever their level of income. Television, as a means of communication and education for the betterment of society, is unparalleled, regarding its reach. Subsequently, the introduction of colour television and expansion of the Television network throughout the country with the establishment of more transmitters and relay stations has led to tremendous increase in the demand for television sets resulting in a plethora of models now available in the market. Despite what the advertisements proclaim and whatever the brand of television one buys, the components are likely to be the same. The performance of the TV will mainly depend on the quality of the picture tube and the skill of assembly. A reputed brand with a good local servicing facility may be a safe bet in the jungle of several new makes being introduced almost everyday.
A good TV should render an average of 5,000 hours trouble free performance. The antenna is a vital part of the TV and should be preferably fixed by a trained technician. The antenna, the feeder wire and the TV receiver should be properly tuned with. Any mismatch arising out of this chain will result in horizontal displacement of the screen known as ghost shadows. On the top of buildings especially on sky-scraper flats, we see a plethora of antennae. This will usually distort the picture clarity. The trend is to provide built-in-antenna in each flat or a multi-purpose dish antenna. Antenna adjustments are more critical for colour TV's than the black and white ones. In week signal areas, booster amplifiers are most useful. Television receivers must be kept away from sunlight. Even artificial lights should not be allowed to fall directly on the screen. A light bulb or tube light may be switched on behind the TV sets. Ordinary bulbs should never be used as they cause reflection on the screen.
The viewing distance should be at least eight times the diagonal width of the screen. For example, a 51 cms screen TV must be viewed from a distance more than eight meters away and so on. Usually children tend to sit on the floor close to the TV. They are bound to get myopia in a few years time apart from other serious eye troubles since both the angle of viewing and the level of viewing impose a heavy strain on their optic nerves. So far as viewing hours are concerned, as per medical opinion, one should not go beyond two hours of watching at a stretch, you must not intently look at the screen. Flickering and closing of the eyes occasionally to relieve the strain are precautions you must take.
In the market, there is more money in extras -- such as anti-glare screen, stand, stabiliser and other accessories. So a dealer will professionally be inclined to push as many accessories as he can to you. You should never be swayed by their sweet tongues. You should thoroughly examine their usefulness before you buy them. The anti-glare sheet which consists of blue glass is not necessary. Such a screen in fact reduces picture clarity and to compensate, you may have to go for brightness knob at a much higher position than necessary which is detrimental to the life expectancy of the picture tube.
Television should be viewed from the eye level. Don't burden yourself additionally with a stand. A table of convenient height at home will do. Most TV sets have built-in stabilisers with Switch Mode Power Supply (SMPS). So an additional stabiliser is not necessary. This will add to your extra cost and also damage the set. Dust is the biggest single enemy to TV receivers. The Television should invariably be covered while not in use with cloth. Since it works on high voltage and gets heated, the set needs ventilation.
C.S. Chakravarthy
H. No. 12-13-302, St. No. 9,
Lane. No. 1, Flat. No. 203,
Satya Classic, Tarnaka,
Secunderabad- 500 017
Telangana State.
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