Disadvantages of Plasma Televisions- What You Should Know

Plasma televisions have come a long way since they first appeared about a decade ago and they have become the newest must-have home appliance there is on the market. They're flat, hip and offer stunning images unlike anything we've seen on older television models before. Plasma televisions do seem to have it all, but are they the answer to all our home entertainment prayers or just a trend? Unfortunately, plasma televisions have a few disadvantages.

The cost

This is the number one consideration for many videophiles and plasma televisions are not cheap at all. When they first came out in the 90s, the price tag for plasma television sets showed a whopping $10000. That forms a part of a regular home mortgage and enough to have consumers running in the opposite direction.

These days, though, the price has calmed down thanks to better production practices and the magic of demand. In fact, a good-sized brand-name plasma TV costs at least $2500. That's still the price of about three regular TVs with a few video CDs thrown in. Compared to its nearest rival, the LCD TV, plasma televisions, one of its disadvantages, still cost more.

But with the price comes quality. Nowhere else can you find the kind of high-definition viewing pleasure that plasma televisions can offer. If their price is a disadvantage, they more than make up for it with their quality. Besides, for a genuine videophile, plasma televisions have a short return on investment and they will more than make up for their price in a few years. If you think of that, that's not really a disadvantage of having a plasma television now, is it?

Life span

Plasma televisions had a notorious reputation for conking out after a given set of viewing hours. In 2004, plasma televisions offered a disadvantageous 20,000 hours of viewing pleasure. Compare that to an LCD TV's 50,000 hours.

These days, however, plasma televisions have improved and been given longer life spans. Depending on the brand, plasma TVs have a half-life of 60,000 hours. If you're a normal person with a normal family having normal TV viewing hours, that should not be considered a disadvantage. Imagine this: if you spend at least 5 hours in front of your plasma TV, that will translate to about 33 years of use.

The viewing hours do not indicate an expiry date for your plasma television. The number of hours refers to the plasma TV's half-life, or the time when your TV screen burns at half of its original brightness.

Burn in issues

This is another disadvantage of plasma televisions. Plasma TVs are called that way thanks to the thousands of minute fluorescent lights in the screen. These lights are filled with gas which burn each time the TV is used. This is a good thing, because compared to the LCD and the older CRT TVs, a plasma TV need only light up when they're needed. LCD panels are like one big light bulb that is always turned on.

With regular TV use, that's really not a problem. The disadvantage appears when you display a static image on screen. What's a static image? If you're an HBO fan and you have your plasma television turned on to HBO for hours on end, pretty soon you'll notice a faint HBO logo on your screen even when you're turned on to ESPN or another channel.

That is also an issue if you're a heavy video game user. If you hook up your video game console to your plasma TV and play all day for days upon days, the hours of playing will burn in the image of, say, the life meter on your plasma screen. That will be a little embarrassing especially if you're having friends over and they'll see a shadowy image of your otherworldly pursuits right in front of their eyes.

But then again, the risk of burn-in only becomes a real threat and disadvantage if you use the plasma TV full blast. You can always cheat by reducing the TV's contrast to just 50%.

With every new technology, there are always good points and bad and plasma televisions are not free from these issues. In the game of 'who's-the-better-tv', there really is no one clear winner. If you choose a plasma television, then it's only because you like what you see, you can afford it and you can handle the disadvantages of a plasma television while enjoying the advantages.

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How Do Plasma Televisions Work?

Plasma TVs have been one of the most popular home entertainment solutions on the market for several years. They offer outstanding resolution and a quality picture and are usually capable of displaying HDTV signals, allowing you to watch all of your favourite HDTV programs. Compared to rear projection TVs, plasma technology offers some of the best viewing angles- no need to fight over the best seat anymore- and offer uniform screen brightness.

But how does plasma technology work? It's pretty simple. Some form of inert gas- say Xenon, for example, is inserted between two plates, which are held together, between which are over two million pixels, capable of producing a mind-boggling array of colors. The gas is then energized by a charge which turns it into a viscous substance, creating an ultraviolet light, which allows each pixel to display the appropriate color. Unlike rear-projection TVs, each pixel in a plasma display contains red, blue, and green phosphors, there is no need for a cathode-ray tube. In traditional TVs, the cathode-ray tube, or CRT, fires electrodes to the screen, where they excite phosphor atoms causing them to light up, thus creating a picture. The CRT is bulky and is responsible for the box-shape of traditional televisions. For example, if you want to increase the size of the screen in a CRT, you must also create a larger cathode-ray tube, therefore making the whole TV that much bigger- and bulky.

One drawback to plasma technology is the inability to recharge each individual pixel. Each pixel is an independently sealed entity, as is the plasma display panel and the gas, so if a pixel, or a group of pixels, fail or darken, the entire panel unit must be replaced.

Fortunately, however, you can expect your plasma display to last at least 60,000 hours of playing time, before the pixels begin to darken. So, in layman's terms, if you watch your TV for four hours a day, you can expect the panel to last around eighteen years.

Plasma technology has greatly increased the quality of home entertainment, ushering in a new era of television technology.

Tom Ace is the founder of Plasma tv Resources a website providing information on plasma televisions.