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Golf
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 Posted: Fri Dec 08, 2006 5:15 am Post subject: Sony verse Mitsubishi |
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I am looking at buying a rear projection HDTV. I'm partial to Hitachi,
but am looking at the Sony KDS line, and the Mits DLP's. From a tech
stand point, which would tend to be the long term runner between these
technologies as far as dependability? Any thoughts would be greatful.
Thanks group. |
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Andrew Rossmann
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| Posted: Fri Dec 08, 2006 11:43 pm Post subject: Re: Sony verse Mitsubishi |
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[This followup was posted to sci.electronics.repair and a copy was sent
to the cited author.]
In article <1165546981.211888.93520@73g2000cwn.googlegroups.com>,
stokesb@cox.net says...
| Quote: | I am looking at buying a rear projection HDTV. I'm partial to Hitachi,
but am looking at the Sony KDS line, and the Mits DLP's. From a tech
stand point, which would tend to be the long term runner between these
technologies as far as dependability? Any thoughts would be greatful.
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One item to know is that most DLP's (unless you are willing to spend
$$$$$$$$$$) have only a single mirror chip. It generates the 3 colors by
having a little wheel with colored lenses spin between the light source
and the mirrors to generate the colors. You can often see a rainbow
streak on fast movements, or if you move your head.
Some newer DLP's are using LED's to generate the colors. Some newer
DLP's are spinning the wheel faster to minimize the rainbow effect.
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Leonard Caillouet
Guest
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| Posted: Wed Dec 13, 2006 2:27 pm Post subject: Re: Sony verse Mitsubishi |
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"t.hoehler" <t.hoehler@insightbb.com> wrote in message
news:faednUyrBcuwFOLYnZ2dnUVZ_uW3nZ2d@insightbb.com...
| Quote: |
One item to know is that most DLP's (unless you are willing to spend
$$$$$$$$$$) have only a single mirror chip. It generates the 3 colors
by
having a little wheel with colored lenses spin between the light
source
and the mirrors to generate the colors. You can often see a rainbow
streak on fast movements, or if you move your head.
What kind of motor do they use, and what speed does it run? How about life
expectancy? Greater than the lamp?
Just curious . . .
thanks,
Tom
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It varies with brand. Most would have a life expectancy far greater than
the lamp. A great deal of the concern comes from lots of early failures in
RCA and Samsing sets. In four years of selling and servicing DLP products
(neither of those brands), we have had exactly one bad color wheel motor,
and that was a virtual DOA, well within the warranty period. IME, it is far
less of a concern than optical path problems on LCD and LCOS sets, or
phosphor aging in PDPs.
Leonard
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