Dixons killing CRTs
 

"Pyriform" wrote in message
...
Malcolm H wrote:
What is this lamp you're talking about? We're not talking about
projection.

He means the backlight in an LCD panel. He seems to have a fairly
pessimistic view of its lifespan. I believe MTBF figures are currently in
the range 30,000 to 50,000 hours, which is comparable with a CRT. Not

40,000 hours is only 4.5 years whereas a CRT will last more than 20.

sure about the cost or difficulty of replacement - I suspect that for most
people, by the time the backlight expires, technology will have moved on
and they'll want a new display rather than fixing the old one.

I'm not paying 3.5 grand for a lamp that will last only 5 years.

The last energy saving light bulb I replaced said is would last 12 years but
it only lasted 3 so I'm not trusting any claims for LCD lamps whereas I know
a CRT will last 20 from experience. If the TV hadn't be struck by lightning
it would probably still be going today.

Dixons killing CRTs
 

On Thu, 26 Jan 2006 13:01:54 -0000, "Agamemnon"
wrote:

40,000 hours is only 4.5 years whereas a CRT will last more than 20.

Tell that to the 4 CRT's I have owned, none of which made 10 years.
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Dixons killing CRTs
 

In article , Agamemnon
wrote:

"Pyriform" wrote in message
...
Malcolm H wrote:
What is this lamp you're talking about? We're not talking about
projection.

He means the backlight in an LCD panel. He seems to have a fairly
pessimistic view of its lifespan. I believe MTBF figures are currently
in the range 30,000 to 50,000 hours, which is comparable with a CRT.
Not

40,000 hours is only 4.5 years whereas a CRT will last more than 20.

I don't think you are comparing like with like. A CRT might still work
after 20 years, but it won't have been on continuously for that period of
time. If you watch tv 4 hours a day, 40,000 hours is 10,000 days worth -
27 years.

--
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Using a RISC OS5 computer

Dixons killing CRTs
 

Agamemnon wrote:
"Pyriform" wrote in message
...
Malcolm H wrote:
What is this lamp you're talking about? We're not talking about
projection.

He means the backlight in an LCD panel. He seems to have a fairly
pessimistic view of its lifespan. I believe MTBF figures are
currently in the range 30,000 to 50,000 hours, which is comparable
with a CRT. Not

40,000 hours is only 4.5 years whereas a CRT will last more than 20.

Viewing for 5 hours a day, 365 days a year, 40,000 (since you chose the
middle of the range) hours equates to a life expectancy for such a
backlight of 22 years. I am also fairly sure (though I can't be arsed to
check) that this figure does not imply total failure of the backlight,
but is based on the point at which it is only delivering 50% of its
original light output. I can assure you that your 20 year old CRT will
have been considerably dimmer by the time of its demise than when it was
new. You just won't have noticed.

Also, most people (and I'm sorry to be the one to have to break this to
you) don't watch TV 24 hours a day. And if they did, they would be very
lucky to have their CRT TV last 20 years. Of course, these are mean
figures, and there will always be exceptional examples on either side of
the curve.

Do you watch TV 24 hours a day?

Dixons killing CRTs
 

Agamemnon wrote:

40,000 hours is only 4.5 years

If it's on 24x7, which is generally _not_ the case.

whereas a CRT will last more than 20.

Nonsense. You are very lucky if your CRT lasts 20 years.

I'm not paying 3.5 grand for a lamp that will last only 5 years.

You should not _have_ to pay 3.5k to replace the backlight in an LCD,
they is no reason why they can't be replaced easily at relatively low cost.

The last energy saving light bulb I replaced said is would last 12 years

I know of several energy saving bulbs which must be at least 10 years
old (I was relatively young when they were installed anyway)... now
apply your "my CRT has lasted 20 years so they all do" argument and see
where you end up.

Dixons killing CRTs
 

Agamemnon wrote:

"Pyriform" wrote in message
...

Malcolm H wrote:

What is this lamp you're talking about? We're not talking about
projection.


He means the backlight in an LCD panel. He seems to have a fairly
pessimistic view of its lifespan. I believe MTBF figures are currently
in the range 30,000 to 50,000 hours, which is comparable with a CRT. Not


40,000 hours is only 4.5 years whereas a CRT will last more than 20.


Ummm - who watches TV 24/7?! I think you'll find that's more like 20+
years of avaerage viewing.

sure about the cost or difficulty of replacement - I suspect that for
most people, by the time the backlight expires, technology will have
moved on and they'll want a new display rather than fixing the old one.


I'm not paying 3.5 grand for a lamp that will last only 5 years.


You (or I) can buy a branded 32" LCD for well under 1000UKP. I happen to
think the picture quality of my Sony, while far from perfect, is very
good. The main issue is the quality of the signal it's fed.

The last energy saving light bulb I replaced said is would last 12 years
but it only lasted 3 so I'm not trusting any claims for LCD lamps
whereas I know a CRT will last 20 from experience. If the TV hadn't be
struck by lightning it would probably still be going today.


I've just moved from my old place, where I lived 12 years and put energy
saving bulbs in when I moved. One failed (landing light, on a lot),
although a few had become noticeably dim.

On the loose but not unreasonable assumption that you do leave things on
24/7, buying an LCD TV would save you about 750UKP in electricity costs
over the next 5 years at current (ahem) prices.

Rob

Dixons killing CRTs
 

"Chris Howells" wrote in message
...


Nonsense. You are very lucky if your CRT lasts 20 years.



I have still got my CONTEC (no idea - never heard of them before or since)
colour portable that I got when I was about 15 years old, I'm 48 this year
so its nearly 33 years old and still going strong. The only thing that is
broken is the on-off switch so I have to turn it off by the mains switch. It
pre-dates remote control TV's and only has push buttons to change channels
but its good enough for the wife doing the ironing in the kitchen :)

Paul

Dixons killing CRTs
 

In article , Paul says...

"Chris Howells" wrote in message
...


Nonsense. You are very lucky if your CRT lasts 20 years.



I have still got my CONTEC (no idea - never heard of them before or since)
colour portable that I got when I was about 15 years old, I'm 48 this year
so its nearly 33 years old and still going strong. The only thing that is
broken is the on-off switch so I have to turn it off by the mains switch. It
pre-dates remote control TV's and only has push buttons to change channels
but its good enough for the wife doing the ironing in the kitchen :)

I've got an old B&W 5" 12V thing that must be 20 years old and has
spent its entire life being slung from one side of a lorry cab to the
other.

I used to get my TVs from dumpster diving when I was a kid.


--
Conor

Windows & Outlook/OE in particular, shipped with settings making them
as open to entry as a starlet in a porno. Steve B