Anybody experienced LED backlighting LCD of ever failing?


B

BillW50

The reason I am asking since my florescent backlight LCD screens usually
fail within 4 to 6 years. And most of the time it has been either the
lamp or the inverter that drives the lamp that fails. My oldest LED/LCD
screens are from 2007 and they are still working fine. Although they
haven't had all of the hours I placed on my florescent backlight LCD
screens.

Recently my main florescent backlight LCD monitor failed and I was in
the market for another one. The last one was a 19 inch and I got a 23
inch LED/LCD one to replace it. I also got a VESA monitor arm (Ergotron
LX Desk Mount) that I can place the monitor any place I want. Boy are
these things ever nice. And they free up lots of desk space as well.
 
B

BillW50

In BillW50 typed:
The reason I am asking since my florescent backlight LCD screens
usually fail within 4 to 6 years. And most of the time it has been
either the lamp or the inverter that drives the lamp that fails. My
oldest LED/LCD screens are from 2007 and they are still working fine.
Although they haven't had all of the hours I placed on my florescent
backlight LCD screens.

Recently my main florescent backlight LCD monitor failed and I was in
the market for another one. The last one was a 19 inch and I got a 23
inch LED/LCD one to replace it. I also got a VESA monitor arm
(Ergotron LX Desk Mount) that I can place the monitor any place I
want. Boy are these things ever nice. And they free up lots of desk
space as well.
I meant to post this under "microsoft.public.windowsxp.hardware", so it
is under both now.
 
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P

Paul

BillW50 said:
In BillW50 typed:

I meant to post this under "microsoft.public.windowsxp.hardware", so it
is under both now.
On CCFL, the tube might be rated for 25,000 to 35,000 hours.
The CCFL inverter (power supply, 1000 VAC @ 3W) can die in as little
as a year, and more inverters fail than anything else.

On LEDs, a white LED (if that's what they're using), has
a quoted life of 50,000 hours or so. LED manufacturers
define failure as "fails to meet X percent of light output",
so a "dead" LED to a manufacturer might still be giving light.

They could build screen illumination with RGB tri-color arrays of
some sort (additive white), but perhaps that was only tried at
first. I've never opened one up to see what was inside.

The power control for the LEDs (for dynamic contrast) is
probably pretty reliable. And should be not nearly as
bad as those inverters on CCFLs.

As long as you find the color spectrum is still correct
on that 2007 monitor, by all means "Go LED".

Paul
 

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