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Home audio & video: LCD Dead Pixels

by mmaness0 - 10/25/07 3:17 PM
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Post 1 of 9

LCD Dead Pixels

by mmaness0 - 10/25/07 3:17 PM

I just bought a Samsung LN-T4661F 46" LCD and I am concerned about possible future defects as I have not yet purchased an extended warrenty. After reading that the manufacturer's warranty does not cover "dead pixels" unless they are large enough (I've heard they must be bigger than a quarter!) I am worried. How common is this problem? If the TV is ok now is it unlikely to develop dead pixels in the future?

Post 2 of 9

Don't Worry About It

by AJones4 - 10/25/07 4:39 PM In reply to: LCD Dead Pixels by mmaness0

Within the lifespan of every LCD TV (say 8-10 years) you will experience a handful of dead pixels, but they're so small that they're practically invisible during normal viewing.

As per extended service plans, most don't cover individual pixels. Don't believe a salesperson: read the fine print (you should be able to get a list of what is and is not covered). If the service plan is merely an extension of the manufacturer's warranty, then it'll cover exactly what the manufacturer does and does not cover. However, don't let dead pixels coerce you into purchasing an expensive extended service plan.

Post 3 of 9

Warranty

by ns387241 - 10/25/07 7:14 PM In reply to: Don't Worry About It by AJones4

The service plans with the teles only cover dead pixels to the extent that the manufacturer does. In this case: Zero. Although if you're running with a power conditioner and a UPS, you should be fairly immune to this defect. Do keep in mind however, should you experience a problem that is either not covered by the manufacturer or outside the manufacturer's warranty period, you would effectively be screwed out of a $2k TV

DO NOT TOUCH YOUR LCD DISPLAY!!! This will induce dead pixels and image persistance.

ALLOW APPROX. 100 HOURS OF VIEWING ON A 50-50-50 mode!!! (standard settings). Leaving the television on Dynamic mode will make it consume roughly twice the power it should, thus unduly stressing the set, which will cause dead pixelage and image persistance.

Be sure to keep the room stabilized (temp, humidity, etc.) to prevent any unnecessary wear+tear on the set. Following the above precautions from the get-go should get you somewhere between twenty and thirty years or 60,000hrs (6hrs/day, 7days/week).

A dead pixel is very annoying on an LCD display. I am currently typing on a Samsung computer monitor (LCD) that is experiencing occasional backlight failure and permenant dead pixelage. at 17", this is definitely smaller than what you have, but once you spot that pixel, your eyes will always find it again, especially in dark scenes (movies, games, etc.)

Post 4 of 9

touching lcd screen

by tedtks - 10/26/07 5:54 PM In reply to: Warranty by ns387241

I know that just cleaning an LCS screen with soft cloth can
still leave minor scratch lines - mostly viewable from an angle, but
over time these will build up - then I read that it can also
damage pixels - sooo...
when I got my new dell 2407 monitor, the first thing I did
was go to wal-mart. bought a $9 picture frame. took the plastic
cover and cut it to the dimensions of the montor outer edge.
also had to cut a little notch for the controls on the lower right.
then simply taped it to the front of the monitor.
wipe the dust anytime hahahha if it gets scratched - but another.
the plastic does not tough the screen so all is protected.
ted
:-)

Post 5 of 9

INTERESTING IDEA, BUT CAN IT HELP FOLKS WITH 52" SCREENS..

by Riverledge - 10/26/07 6:03 PM In reply to: touching lcd screen by tedtks

JUST A THOUGHT.


River.

Post 6 of 9

52inch

by tedtks - 10/26/07 6:11 PM In reply to: INTERESTING IDEA, BUT CAN IT HELP FOLKS WITH 52" SCREENS.. by Riverledge

my local wally's doesnt have frames that big - specially in
the cheap slip frame for posters.
might look around - office supply or craft store.
the pic frame plasic is pretty thin - about 32nd inch.
but you could posssibly get 1/16 or 3/32 stuff somewhere.
I know when I get saved up I will do this for my next TV.
ted
:-)

Post 7 of 9

protection for 52 inch screens

by PolymorphDigital - 10/27/07 7:39 AM In reply to: INTERESTING IDEA, BUT CAN IT HELP FOLKS WITH 52" SCREENS.. by Riverledge

Check your local phone book for plastic supply houses.

I used a plastic sheet on a 17 inch CRT monitor to protect the antistatic coating, because in my digital photography business I could not keep people from touching the screen while pointing.

I actually had people use a key or pen when I asked them not to touch it with their finger!

BTW, never, repeat -never- use paper towels to clean your screen, not even to clean a plastic protective cover. They are abrasive. Get a microfiber cloth that is made specifically for cleaning optics and screens.

Post 8 of 9

settings on px75u

by trelvis - 11/23/07 11:12 AM In reply to: Don't Worry About It by AJones4

I have the same tv and was wondering if you could tell me what you have your settings set to, as my picture seems a little off as far as color? My picture mode is in custom but I would like to get the actual number settings as far as color etc.

Post 9 of 9

They're like grey hairs...

by genotypewriter - 10/27/07 4:53 AM In reply to: LCD Dead Pixels by mmaness0

You spot one and the next thing you know... well you know how it ends... j/k

Are they a worry? It's really up to the individual. It goes down to our values...

Good luck!

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