3 dead pixels already and its only 1 day old!!!

[micovwar]

hi ,,just taken delivery of my aoc lm800 18" tft yesterday and although im quite happy with it i noticed within 30 mins of trying it out i had a dead pixel ,then noticed when i was squinting to look for more theres actually another 2 ,although tiny, the first 1 i noticed is actually quite annoying when ure on a black screen or anythin like that!!

its just a constant blue dot nommatter whats onscreen,where its located tho isnt realy a prob as its right on the bottom of the screen where the taskbar sits,,and when in windows u realy have to struggle to see it in the taskbar but when loading anything or booting up windows where ure faced with a black screen its quite noticeable and i fear that maybe more will come,,

can any1 tell me how fast these dead pixels apear and howcome ive got a few on my brand new tft,i heard somewhere that pretty much all tft,s have atleast 1 dead pixel somewhere onscreen but i thought that sounded abit flakey realy,,now that ive already got a few should i be worried incase more appear?

thnx

[Stoo]

It's a problem with all tft screens, not many manufacturers will give a dead pixel guarantee

[prehensile]

return it!!! or try and get it half proce as an alternative to your returning it to them

[directhex]

ISO SPEC13460-2 details dead pixel allowances.

Class II is the common class for consumer equipment
Class I is for Military, Hospital or other Critical applications

Allowable missing pixels per million pixels on display:

Class  | A Pixels Always Lit | B Pixel Never Lit | C  Sub-Pixel Always Lit, Never Lit, or blinking 
I      |         0           |         0         |                       0 
II     |         2           |         2         |                       5 
III    |         5           |         15        |                      50 
IV     |         50          |        150        |                      500

an 18" tft has 1310720 pixels, so can have 2.26 class a errors, 2.62 class b errors, and 6.5 class c errors. a PERMANENTLY colored pixel is actually 3 class c errors (always-off red, green, always-on blue), but is only 2 errors if you can distinguish shades of blue. you can only return a screen as faulty if it misses these figures.

--jo

[directhex]

also, they're a manufacturing defect, they don't develop over time.

--jo

[micovwar]

realy,,,, so say 4 example if i just accepted it,,ide get no more dead pixels hex apart from the 1s i already have??

[daverobev]

Just send it back, 14 day cooloff period means you can send all manner of stuff back for NO REASON AT ALL. Then buy it cheaper from somewhere else

[Swafe]

RMA RMA RMA

*chants*

cmon people !

[Stoo]

Or just buy a better one from somewhere else

[SilentDeath]

yea just send it back, distance selling regulation gives u 7 days or sommin

[Jonny M]

Isn't that only if it's unopened though?

Could always make more dead pixels in a cluster

[Howard]

It might actually just be a "lazy pixel"
I've heard that some sort of work their way back after a few days of the thing being new.

[directhex]

distance selling rules are for 7 days, where the returned item is as new. 14 days is for door-to-door sales.

you can't "make" dead pixels in a way which cannot be traced, no matter how you try - and no manufacturer is going to believe they let a class D error (multiple errors in a 5x5 grid) slip out.

you can't RMA it as your screen isn't defective enough. you'd need at least 3 permanently permamently fixed pixels of one type (i.e. 2 black 2 white & 2 fixed coloreds still isn't enough for a screen of your size)

--jo

[luke313]

As Howard said, I've heard of so-called lazy pixels. I've also heard that a way to fix it is to rub the area around the lazy pixel in a stroking manner for a while (Sounds stupid, I know, but its worth a try ). Unless it is defective and has the amount to be classed as defective, you cannot rma unless you have paid extra for a dead-pixel check where you *should* be guaranteed a dead-pixel-free tft. HTH

[Howard]

Mmm...Stroking manner..Might give that a try on my....Monitor...

Anyway, search for lazy pixels in Google and see if there are any tips.

[directhex]

just massage the area around each one for a bit, it can potentially spark life

--jo