Sony's line of Trinitron TVs is long standing. Sony Trinitron TVs are tube televisions, trinitron referring to the technology used to project images onto the TV from the light source inside of the television. Like all tube televisions the Sony Trinitron TV line is less available and less desirable today with the advent and popularity of flat panel sets, but the Trinitron line was popular for it's time, though not entirely without technical issues.
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Sony Trinitron TV owners have found that in time, as the set grows older it will begin to have power issues. The older the Trinitron set the more likely it is that the TV will shut itself off at random and will do so with greater frequency even as it gets older. Some owners have complained that the TV would not stay on for longer than three minutes.
Like all tube and projection TVs, as the Sony Trinitron model ages its picture will also dull. This is due to the dying light of the Trinitron's tube. Like a bulb it will eventually burn out and as it does, the light grows weaker and weaker so the picture on the television gets duller and duller. Beyond these naturally occurring problems the Sony Trinitron also sometimes suffers from the appearance of black or grey bars onscreen, another issue with its projection light.
It is not entirely unheard of that a television would die at some point. But one issue with the Sony Trinitron model is how quickly this has seemed to happen. Some later Trinitron models have died within 3 to 5 years of purchase. Other models have not completely died but have suffered technical issues with the bulb, tube or other parts more quickly than expected.
Some of the larger, nicer models of Sony Trinitron TV sets have sold for £1,300 or more as recently as 2006. That is a lot for an initial investment, but when this investment is paired with a lower shelf life and the cost of repairs a Sony Trinitron TV might cost more than it's worth. Replacing bulbs, tubes and other elements of the Trinitron sets when and if they fail can cost hundreds of dollars in just parts alone when the TV is no longer under warranty.
If investing in a TV a Sony Trinitron model would perhaps not be the way to go even if it was a perfect television. Tube TVs are more finite and more problem prone than competing flat panel models now available. Flat panel TVs take out the problem of bulbs and projection by using plasma or LCD technology to create their display. This not only creates a better, more reliable picture, but lighter, thinner and longer lasting sets.
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