22 Mar
2010
22 Mar
'10
11:27 a.m.
> I
typically use the PDFs for research/study (other than the source of =
=3D
> work copies). I also am fortunate enough to
have a 30" display with =
a =3D
> 2560x1600 resolution. It's big enough
and with enough resolution =
that I=20
=20
Fortunate, indeed. I don't know how much a 30" monitor would cose, and =
I=20
don't kno how much it would cost to keep it
running for, say, 20 =
years,=20
but I am sure of one thing -- it's more than
I could afford...
Yea it was expensive (the whole machine it's connected to was =
frighteningly expensive...I've purchased new cars that cost considerably = less...but that's another story). Hopefully
it'll last a while. It's =
an LCD so the thing that's most likely to fail are the cold cathode =
florescent tubes used for the backlight. I suspect that the LED =
versions of these displays will last forever assuming the panel doesn't =
get damaged physically.
I am not so sure... I've had the seals on LCD displays fail (the LCD then
seeps out, the display turns black from the corners/edges). The LCD
material itself can degrade with time too. I assume modern panels are
better than the displays of 20 or 30 years ago, but still...
Eelctronic components also fail as we all know. Capacitors are going to
fail (which is probably not a big problem), so will ICs (which is). Yes,
an LSI chip is more reliable than all the components it replaces but it's
less reliable in my experience than a simpler chip. And a lot harder to
obtain and fit.
I am not sure what sort of service data you can get for these LCD
monitors. I have the service manual for our LCD television. You
module-swap the PSU board and the LCD panel. You repair the
signal-processing panel to component level (for all it contains
BGA-packaged devicea) -- but all you get is a schematic. No waveform data
or test points. I am not looking forward to having to fix this thing.
-tony