6600 hang + dead pixels?

Its interesting that this shoudl crop up as when buying my TFT monitor I was horrified to read that every manufacturer of screen sets a low percent level say 1% or a number of pixels say 5 - 10 and if there are this many pixels on the screen which are dead then it is still considered a fully working screen and cannot be returned - something to do with the technology and the fact that dead pixels are a pretty natural thing to happen.....I wonder if this will also stand for the 6600 screen.....

If you have a dead pixel on your 6600 then you can get a new phone because of that. A couple of guys here in norway got brand new phones because of 1 dead pixel.
I dont have any dead pixels on my 6600.

pasa, 1% on a computer screen may be 5-10 pixels, but on a mobile screen, 1% is much lesser than 5-10 pixels. I think that Nokia should replace every screen which present dead pixels.

how exactly to detect a dead pixel plz advise. i kinda dont understand it. thx.

I am not by any means saying that any number of dead pixels are acecptable - however it is taken for granted that due to the manufacturing process of these types of screens a few dead pixels is acceptable now my argument would be that nokia dont manufacture the screen but are supplied them - therefore if Nokia receive screen with dead pixels they shouldnt be put into Phones in the first place but I dont know who supplies them to NOkia - if they have any other sort of deal or if Nokia are responsible...

here are some links:

ranting
panasonic
reviwe centre

pasa: of course

jesal: a dead pixel is easily seen. in a white screen if you see a little dot (pixel) with no light, or different colour, normally blue or pink, it's a dead pixel.

ahhh ok thx alex. i gotta see on my pals 6600 if there are ne. kinda weird tht nokia has issues like this. how cum i never have heard of samsung havin problems with their tfts, or am i wrong ?

Dead pixels are caused by the complex nature of manufacturing TFT LCD Panels, on a compter TFT screen with a 1024x768 pixel resolution there will be 1024x768x3 transistors on the panel ie. every pixel on the screen is made up of a sub-pixel of red/green/blue each with it's own transistor. This means there are 2,359,296 transistors on the screen, if one should fail it would result in a dead pixel.

If only 100% perfect panels were accepted this would likely double the cost of the TFT screens, as there would be a high wastage. I believe the manufacturing of TFT panels is improving all the time.

I don't think passive LCD screens are affected in the same way, but they are not as bright, colourful or as fast at updating as TFT screens.

Originally posted by Al3xandr3
pasa: of course

jesal: a dead pixel is easily seen. in a white screen if you see a little dot (pixel) with no light, or different colour, normally blue or pink, it's a dead pixel.

If it's a different colour, it may be a stuck pixel. Those are similar to dead pixels but sometimes curable.

The cure is to gently massage the LCD display. Sometimes this can bring them back to life.

Alas, dead pixels can't be cured.

Amorya

Hyundai are the only manufacturer I know of who will replace a 15" TFT with only 1 dead pixel - all the others are as above, 5-10 before replacement.

does the n-gage/3650/7650 have the same problem??

amorya, that sounds like cpr.. 😃

I have 1 pixel, that lights all the time 😞(
It's seen in black background (blinking light pixel)

just bought my 6600 2 dead pixels!! 😞( jus see then in dark

have it replaced. its a legit defect on nokia quality control.

i'm lucky that the units i got are doesn't have those and haven't hanged yet even though i have done installs and uninstalls of programs

is this considered a dead pixel ?

wipe it or rub it
it could someones booger🙄 😃 😉

The 6600's screen seems to be suffering quality problems. Most 1024x768 TFT panels now have zero bright dot guarantees, or any bad pixel guarantee. The 6600's screen is much smaller than that, and yet I'm seeing many units with bad pixels.

Most 1024x768 TFT panels now have zero bright dot guarantees

Where do you get that from, the only one I have seen is the CTX 90 day zero dead pixel warranty.

Did you read me previous post about why dead pixels are are allowed in quality control? Zero dead pixels reduce the yield and therefore increase the cost, as Nokia have only just started using TFT screens they may not have a policy yet, and I agree there are considerably less pixels on a series 60 phone so even 1 dead pixel does seem a lot.

I have a excellent Sharp 1024x768 15" TFT monitor, it shipped 18 months ago with 1 dead pixel (red), I hated it a first but now I never notice it.

Neil

ah_keh YES, your dead pixel is just like mine, white and it "blinks"all the time. I'll go to shop where I bought phone, they have to replace it.

[QUOTE]Originally posted by Mr Zippy
[B]Where do you get that from, the only one I have seen is the CTX 90 day zero dead pixel warranty.

Did you read me previous post about why dead pixels are are allowed in quality control? Zero dead pixels reduce the yield and therefore increase the cost, as Nokia have only just started using TFT screens they may not have a policy yet, and I agree there are considerably less pixels on a series 60 phone so even 1 dead pixel does seem a lot.

QUOTE]

I know about TFT's cost and yield, but many manufacturers do have zero dot guarantees now. Some only do it for the higher end models, and some are across the entire product range.

Acer just announced a few months ago a zero bad pixel guarantee for their notebooks too. I got my screen replaced cause it has a red pixel in the corner. My notebook is one of those low end (<US$1000) Centrino notebooks, and I bought it before they had this guarantee.

haha..thanx.. i got mine replaced.. ^____^

i am on my 3rd 6600 - the first one had a dead pixel, so i took it back, and the one they gave be had a big bit of dust/plastic under the screen - it was about 3mm long so it was really obvious - took that back and got another - so far this one's great 😊