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-   -   Is Dead pixels a general problem on N900?, please comment! (https://talk.maemo.org/showthread.php?t=38433)

gohan2091 2010-01-05 14:01

Re: Is Dead pixels a general problem on N900?, please comment!
 
I contacted Nokia UK by email but after no response, I rang them. The lady on the phone sent me an email with a free post label on it. I am to send this phone back and a replacement will be sent to me once received.

A few hours after phoning them, I received an email saying I was to take the phone to a repair centre and they can decide if the phone needs repairing. It's a good job I rang them, I prefer the response the lady gave me than the response from email.

Devil 2010-01-07 03:55

Re: Is Dead pixels a general problem on N900?, please comment!
 
okay so on my previous device i had a few dead pixels.

i got a replacement last saturday and now i finally noticed again like 5 dead pixels divided on the display.

since each N900 seems to differ in how many or no dead pixels, gap at the keyboard, gps working fast or slow, unexpected reboots or not and wifi problem or not etc. should i take a chance with this one because all seems to work fine.

fairly good gps, way faster than previous device, only few scratches on back and already made 2 tiny ones on the screen.
there is a gap with light shining between keyboard and bottom of the device so i really dont know what to do anymore. to be honest im getting a little aggrovated by this whole thing.

how big a chance i would get an absolute flawless device next time? my guestimation is chances are nihil.

Magel282 2010-01-07 05:06

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by Devil (Post 456731)
okay so on my previous device i had a few dead pixels.

i got a replacement last saturday and now i finally noticed again like 5 dead pixels divided on the display.

since each N900 seems to differ in how many or no dead pixels, gap at the keyboard, gps working fast or slow, unexpected reboots or not and wifi problem or not etc. should i take a chance with this one because all seems to work fine.

fairly good gps, way faster than previous device, only few scratches on back and already made 2 tiny ones on the screen.
there is a gap with light shining between keyboard and bottom of the device so i really dont know what to do anymore. to be honest im getting a little aggrovated by this whole thing.

how big a chance i would get an absolute flawless device next time? my guestimation is chances are nihil.

Why settle for anything less than perfect? Are Nokia paying for the return postage? If so keep sending them back until they get it right. I understand that this is probably an inconvenience for you but the more that go back for these issues the quicker these faults will be rectified.

vietn900 2010-01-07 05:27

Re: Is Dead pixels a general problem on N900?, please comment!
 
well its user preference but yeah shame on nokia :(

whc 2010-01-07 20:01

Re: Is Dead pixels a general problem on N900?, please comment!
 
Just an small update, today I send my N900 in for repairs, about the dead pixel problem, dust under display, and slider that seemed loose when closed. Unfortunately Nokia only has a 7 days DOA policy, so not possible to get a new device, even though I tried hard :D.

But if it gets fixed, than it is ok, a new device is always to prefer, but the chance is quite big to get another one with same or even worse problems.

Anyway will keep you updated, and see if this pixels problem can get fixed by turning the device in to a service shop :).

talkMAEMOnik 2010-01-07 20:30

Re: Is Dead pixels a general problem on N900?, please comment!
 
I had checked more than 15 NOKIA N900 in 2 NOKIA's shops few days ago... Situation is really bad...:mad:
Before that checking I bought one. I was mistaking when didn't switch brightness of LCD to max. I didn't know about that because thought that N900 has fully auto brightness.
Later when using it I had found screen options and turned brightness to max. After that I saw black screen in the file manager and there was a lot of shiny dots. White and purple colours dominated. Many of usual size and a lot of small dots. Some of them are annoying.
There was no good N900 for replacement in the retail NOKIA store: more than 7 of N900 had shiny dots, besides that 3 of them had additional defects on the screen - one had small dark area not bigger than 5 millimetres, one had black dot or something that seems black on the white screen, one had tiny damaging on the plastic of the screen.
The second NOKIA retail store hadn't any good N900 too. More than several dots on each one. There was much more of N900 comparing to the first Nokia's store. If I knew Ctrl+Shift+N makes the screen black, I would be saved a lot of time... :eek:
One N900 I had checked in anoter - I mean not nokia - store was "shiny" too.
I don't suppose that it is bad pixels (dead or stuck); light leakage may be...
The one I have doesn't contain dust or something that I can see with the flashlight. That shiny one I have placed to repair, because there was no good replacement. :confused:
P.S.: shiny dots are visible not always, but from certain angles. Aren't visible on the screen with min brightness, even in dark room.
Once I tried to sum them all: the score is more than 30 light dots.
P.S..: http://deadpixel.googletoad.com/ more than 14 hours.
http://www.topflashers.com/etc/screenfix/ not too long - a few hours.
Didn't help.
P.S...: Made by N900 screenshots(of black) and photos(black and white) are good - no dots on images... But I have forget to do the screenshots of white screen and other colours.
P.S....: my N900 is good with green, red, blue (on blue one white dot that was hardly to find - not too serious), tested with help of http://jasonfarrell.com/misc/deadpixeltest.php

talkMAEMOnik 2010-01-07 20:37

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by whc (Post 457971)
Just an small update, today I send my N900 in for repairs, about the dead pixel problem, dust under display, and slider that seemed loose when closed. Unfortunately Nokia only has a 7 days DOA policy, so not possible to get a new device, even though I tried hard :D.

But if it gets fixed, than it is ok, a new device is always to prefer, but the chance is quite big to get another one with same or even worse problems.

Anyway will keep you updated, and see if this pixels problem can get fixed by turning the device in to a service shop :).

Will see which one will be repaired sooner, yours or mine.:rolleyes:

oldpmaguy 2010-01-08 02:54

Re: Is Dead pixels a general problem on N900?, please comment!
 
I have what seems to be two, maybe three, stuck pixels. Stuck on white, making a sort of tiny diagonal dot, lower left to upper right direction. It's just down and left of center screen - a pretty obtrusive area, if you ask me. Anything with a dark screen and these pixels jump right out at you.

What should I do, then? Bother with a repair/replacement? I'm just asking about other's experiences and opinions.

talkMAEMOnik 2010-01-08 06:25

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by oldpmaguy (Post 458565)
I have what seems to be two, maybe three, stuck pixels. Stuck on white, making a sort of tiny diagonal dot, lower left to upper right direction. It's just down and left of center screen - a pretty obtrusive area, if you ask me. Anything with a dark screen and these pixels jump right out at you.

What should I do, then? Bother with a repair/replacement? I'm just asking about other's experiences and opinions.

If you know where is located one of the good N900 and you can get it from there - ask for returning the money and then buy the good one.
If you have the chance to check the N900s, one of which could be the possible replacement - so, find the fine N900 for replacement.
If you aren't sure about what the quality will be of the possible replacement - may be you should ask for repairing.
Or make the replacements all the time until you get the good N900.

whc 2010-01-08 18:35

Re: Is Dead pixels a general problem on N900?, please comment!
 
Yes you money back, or swap it for a new one as DOA (within 7 days), and last and maybe the most secure model, it to get it fixed by a service shop.

When I search my repair, I get "spare part ordered", so maybe this is a new screen :D.

talkMAEMOnik 2010-01-09 12:13

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by whc (Post 459716)
Yes you money back, or swap it for a new one as DOA (within 7 days), and last and maybe the most secure model, it to get it fixed by a service shop.

When I search my repair, I get "spare part ordered", so maybe this is a new screen :D.

Where is that search service?

whc 2010-01-09 12:15

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by talkMAEMOnik (Post 460935)
Where is that search service?

I use a company called Telecare, here in Denmark they have walk in service, and repairs all brand within warranty, they have tracking system.

SonicSpinner 2010-01-09 15:07

Re: Is Dead pixels a general problem on N900?, please comment!
 
whc> im from DK too. you think theyll fix mine? i have a stuck pixel. bought it 7 days ago. from vacationing in Dubai, UAE.

I have receit, with imei nr. etc.

oldpmaguy 2010-01-09 17:11

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by oldpmaguy (Post 458565)
I have what seems to be two, maybe three, stuck pixels. Stuck on white, making a sort of tiny diagonal dot, lower left to upper right direction. It's just down and left of center screen - a pretty obtrusive area, if you ask me. Anything with a dark screen and these pixels jump right out at you.

What should I do, then? Bother with a repair/replacement? I'm just asking about other's experiences and opinions.

Just following up on my post here.

I had ordered mine through Amazon, and it seems they have a very easy return policy - just ask for the return and you get it! That's a huge switch from all the hopps I have had to jump through in the recent past with RMA's and all (must be the economy, stupid! %^).

They even pay (I think?) for UPS delivery if you drop it off at a service center (or even call to have it picked up). They give you printable labels and everything. We'll see how it goes, just FYI you all.

AloxeCorton 2010-01-09 17:45

Re: Is Dead pixels a general problem on N900?, please comment!
 
+1 or should I say +2 for dead pixels and screen defects.

I bought my first N900 in early December and I immediately noticed a large dust particle that was the equivalent of around 4 or 5 dead pixels. Fortunately PhoneHouse (where I bought the phone) agreed to replace it when they received new stock. This took about 3 weeks but I did get a new phone from them.
The problem is that the new phone has like 3 dead white-on pixels and several other smaller specks of different color (like red/blue) that aren't so visible but overall it looks like the Milkyway at night! :mad:
After noticing this, I called the Nokia Care hotline which told me to take it to my nearest repair center which I did. Here the guy looked at the screen and said that he had one in stock to replace it. It's been about 3 days now and I'm hoping it will be fixed early next week....I just hope that they didn't substitute one faulty screen for another. I was willing to have a couple dead pixels with LCD screens about 5 years ago when they came out but by now the technology has become mainstream and I find it unacceptable especially for high end models like the N900. I can only sympathize with the others wanting a device with no defects. It seems as though Nokia took a bad gamble when it thought it could contract the screen manufacturing out to someone with such bad quality control - they will pay it in after sales service and and customer dissatisfaction. At least their after-sales service seems decent so far...


-=AC=-

talkMAEMOnik 2010-01-09 19:16

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by AloxeCorton (Post 461320)
It seems as though Nokia took a bad gamble when it thought it could contract the screen manufacturing out to someone with such bad quality control - they will pay it in after sales service and and customer dissatisfaction. At least their after-sales service seems decent so far...

I know that 2 NOKIA's retail shops sell N900s with "Milkyway" screen and -as they sad- noone from customers who bought N900 from them didn't return it, even no bad response was got. And demand on N900 in that shops is well. So I am the first who complain about Milkyway screen. :eek:
Does it mean NOKIA wins, instead of lose? Cheap LCDs save money, quantity or returns not to big >>> cost price may be lower >> N900 can compete with other high-end phones better.
:confused:

Bec 2010-01-09 20:47

Re: Is Dead pixels a general problem on N900?, please comment!
 
Colors and contrast like on the N900 make it far from cheap. I took a look at some android forums that have similar resolution and the problem seems to happen quite often.

I'm not returning mine for one pixel that I rarely notice and I'm pretty sure the device will have some scratch damage that I'll want fixed sooner or later so there's plenty of time for sending it back.

viegas 2010-01-09 21:07

Re: Is Dead pixels a general problem on N900?, please comment!
 
Ok, I already have my N900 so I did the tests and I found that I have two dead pixels. They are on the right corner of the screen. I'll run those fixing tests and see what happens... but they're so small that this doesn't quite bother me. I don't want to be waiting a month for a new N900 just because of two dead pixels. ;)

whc 2010-01-10 00:59

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by SonicSpinner (Post 461106)
whc> im from DK too. you think theyll fix mine? i have a stuck pixel. bought it 7 days ago. from vacationing in Dubai, UAE.

I have receit, with imei nr. etc.

Don't thing they will do phones bought outside DK within warranty, but try to contact them, maybe I am wrong http://www.telecare.dk/

talkMAEMOnik 2010-01-10 11:59

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by Bec (Post 461577)
Colors and contrast like on the N900 make it far from cheap.

Only If there is no dust and hair particles under the screen :rolleyes:

Quote:

Originally Posted by Bec (Post 461577)
I took a look at some android forums that have similar resolution and the problem seems to happen quite often.

I don't know any android-phone with resolution for about 800x480, which is already in the market.

youxing 2010-01-10 12:09

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by talkMAEMOnik (Post 462230)
Only If there is no dust and hair particles under the screen :rolleyes:


I don't know any android-phone with resolution for about 800x480, which is already in the market.

There is one, actually two Android Phones with a resolution of 854x480 in the market: The Motorola Droid, also know as Motorola Milestone in Europe!

gohan2091 2010-01-10 12:37

Re: Is Dead pixels a general problem on N900?, please comment!
 
Sent my n900 back last week to Nokia, haven't heard anything back yet. I hope I haven't returned my dead pixel n900 for a replacement dead pixel n900.

skylinecar1982 2010-01-10 20:39

Re: Is Dead pixels a general problem on N900?, please comment!
 
I have to send mine in for a replacement too. One dead pixel that is very easily seen when watching dark scenes or at night. I only have had it for a couple days and don't want to let it go but can't stand things wrong with screens.

Does anyone know how long Nokia will take to get a replacement to me? I know they say within 30 days but that is a pretty broad time span. I am in the USA if that matters.

oldpmaguy 2010-01-12 03:49

Re: Is Dead pixels a general problem on N900?, please comment!
 
My final post here - Amazon quite nicely accepted the return (well they haven't actually confirmed receipt of it yet but I hope it will be uneventful) but they did next-day me a new unit, which was completely free of pixel issues, thank goodness. They charged me nothing for this exchange, as well. Again, I think this level of customer service has to do with Amazon needing the business - who says the recession is good for nothing?!?!

Svengalis 2010-01-12 04:53

Re: Is Dead pixels a general problem on N900?, please comment!
 
Mine is perfect. Hope that those with dead pixels get some satisfaction...

raysacr 2010-01-13 18:45

Re: Is Dead pixels a general problem on N900?, please comment!
 
Mine got 3-4 dead pixels

Does anyone know if I send my phone into warranty if Nokia sends me a Brand New replacement, a Refurbished replacement, or they repair my original one?

Thanks

UPDATE: So I just called Nokia Care, and apparently they have to transfer my issue to the resolution team and then they'll call me back. It's weird that they don't allow me to initiate a warranty replacement right away.

Has anyone else experience this?

Spenc3 2010-01-13 18:49

Re: Is Dead pixels a general problem on N900?, please comment!
 
so far so good... finger crossed...

whc 2010-01-13 19:13

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by raysacr (Post 468898)
Mine got 3-4 dead pixels

Does anyone know if I send my phone into warranty if Nokia sends me a Brand New replacement, a Refurbished replacement, or they repair my original one?

Thanks

UPDATE: So I just called Nokia Care, and apparently they have to transfer my issue to the resolution team and then they'll call me back. It's weird that they don't allow me to initiate a warranty replacement right away.

Has anyone else experience this?

It has to be within 7 days if you want to return your N900 as DOA and get a new one, else they will just fik the one you got now if possible.

AloxeCorton 2010-01-13 19:36

Re: Is Dead pixels a general problem on N900?, please comment!
 
A happy ending to my dead pixel story:

As stated in my previous post, I received a second phone which also had screen problems that manifested themselves in the form or several dead pixels making the dark screen look like the Milky Way.
When I called Nokia Care, they oriented me towards the nearest Nokia Care center which fortunately was very close by (in Lyon France). When I went there, the guy happen to have a spare N900 screen in stock and it took him a total of about 4 days to repair it.
After thorough inspection of the new screen, I'm happy to say that it has no dead pixels! :)
The only thing is that they did need to open it up and the screws, although not stripped, do show that the screen was accessed. The repair guy told me that he had no problem opening it up and replacing the screen but he did mention that it was difficult making sure there were no dust particles underneath the screen when he closed it up...

Best of luck for the others facing this issue.

-=AC=-

zwer 2010-01-13 21:00

Re: Is Dead pixels a general problem on N900?, please comment!
 
Finally got it... Perfect screen here, no dead pixels, no dust, no light bleeding, no uneven lighting... :cool:

oldpmaguy 2010-01-14 14:23

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by zwer (Post 469136)
...no light bleeding, no uneven lighting...

Do you have any more info/links about these issues? I hadn't considered them before, but I sed a kind of "waffles" looking light patetrn coming from all along the right side of the screen, like waves of light-to-dark from top to bottom.

Has anyone else experienced this, or seen mention of it?

zwer 2010-01-14 15:44

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by oldpmaguy (Post 470903)
Do you have any more info/links about these issues? I hadn't considered them before, but I sed a kind of "waffles" looking light patetrn coming from all along the right side of the screen, like waves of light-to-dark from top to bottom.

Has anyone else experienced this, or seen mention of it?

Uneven lighting usually refers to a case where LCD wafer has inconsistencies in its density/thickness and therefore screen is lighter in some areas and darker in another. The easiest way to notice that is to have a black/white picture covering your screen and if you have lighter/darker spots in some areas, you can call that `uneven lighting`. Here is an example of uneven lighting:

http://img705.imageshack.us/img705/2...5300sonykd.jpg

Light bleeding manifests itself quite similar to uneven lighting but it has a different cause - it's a special form of defect where areas that are not covered with liquid crystals - liquid crystals frame - are not properly isolated from the background lighting therefore light `bleeds` through the frame itself, not through the liquid crystals; or due to some defects in the diffuser. This form of defect is more common in desktop appliances due to higher brightness and one/two huge fluorescent bulbs (unless it uses LED backlight) that serve as a background lighting through a diffuser, but it may appear on handheld appliances as well. It usually appear around the edges (especially if only one fluorescent light is used as a backlight) due to angular direction of the light, and has a quite consistent pattern that only `sharpens` itself and grows in minuscule scale when you increase the brightness, while in case of uneven lighting it grows linearly in the relation to brightness. And here is an example of the most common form of light bleeding (probably a diffuser defect):

http://img359.imageshack.us/img359/6352/img03569pb.jpg

You'll hardly find a LCD screen that has even lighting or no light bleeding whatsoever, but in most cases it's tolerable and/or barely detectable with a human eye (especially due to the fact that most of the time you are watching some colored, moving content on the screen, in which cases it's quite hard to notice). If there is really a noticeable difference in brightness on your screen, you might want to try to get an replacement, but if we take experiences from the laptop arena, most manufacturers won't recognize that as a defect.

On another note - before declaring that your screen have an uneven lighting / light bleeding problem, make sure you are looking at it at dead-center, not at some angle. All handheld appliances (and most, if not all laptops) with LCD screens use TN-Film panels (M/PVA, and especially IPS panels are way too expensive for such uses, and they use far more electricity which is impractical for mobile usage) that have a really bad angular dispersion, and you may mistakenly think that your screen has a light bleeding problem when viewed at some angle.

oldpmaguy 2010-01-14 15:57

Re: Is Dead pixels a general problem on N900?, please comment!
 
Thank you for that thorough primer. I have been an LCD advocate/fan since Gamegear 1 days (wow, 1993!) and I am intimately familiar with their limitations. The info you provided puts it into a good frame of reference. I concur, unless we are watching solid, dark-colored screens, acceptable levels of bleeding and waffling is not the end of the world. It wasn't my intention to set off another round of "my N900 screen is SUX!" and this adequately heads it off (to those who will bother to check). Thanks again for your time and help.

OptX 2010-01-14 16:08

Re: Is Dead pixels a general problem on N900?, please comment!
 
Dont know what i should say. 2x yes for dead pixel ?? I had sent my N900 back because of this problem. About 7 Days later, i had a replacement. But guess what..... This screen was defect too. It is just a very tiny one, and i have to search for that one sometimes. I think i can live with that one, but it is no good promo for Nokia. How do they test the screen? With that black screen protector on ?? :)

lynxus 2010-01-15 17:58

Re: Is Dead pixels a general problem on N900?, please comment!
 
Hi all,
I also have waited months and finally got my N900.

3 problems with mine.

1- Stuck pixels on white. Theres one in the bottom left and a few close to each other in the top right.

The main one in the bottom left is bright white , the other change brightness depending on teh tilt of the screen.

2- the speakerphone sucks *** the person on the other end can barely hear me even if im close up. ( Nothing like the only N9 8gb )

I have spoken to the Carphone warehouse and they said to bring it back so they can give me a replacement tomorrow.

I will let you all know what happens.

It looks like its a common issue with these screens.

I just hope the new one isnt worse!

3- There is some uneveness of the backlight on the right side.
The screen gets quite wavy and dark and is no where near as crisp as the left side ( not so much of an issue )

I mainly just want speakerphoen to work properly and there be NO dead pixels on a £500 phone!

If anyone wants to check theirs again, http://www.imsupporting.com/black.html for a black screen just fullscreen your browser.

Looks like the night sky when i move the screen, Ive never seen such poor quality on a screen

talkMAEMOnik 2010-01-16 16:01

Re: Is Dead pixels a general problem on N900?, please comment!
 
Quote:

Originally Posted by lynxus (Post 474547)
looks like the night sky when i move the screen, ive never seen such poor quality on a screen

+1 __________

ossipena 2010-01-16 16:08

Re: Is Dead pixels a general problem on N900?, please comment!
 
cant vote second time but second device, still zero dead pixels

GameboyRMH 2010-01-16 16:21

Re: Is Dead pixels a general problem on N900?, please comment!
 
I wonder if there are any apps that help "unfreeze" dead pixels. There are some for the DS and PSP that quickly flash different colors over the whole screen or specifically targeted pixels. Prolonged rapid color flashing will shorten the life of a pixel though (eventually you'd have a dead pixel again, that can't be fixed) so apps that allow you to target pixels are preferable.

lynxus 2010-01-16 17:17

Re: Is Dead pixels a general problem on N900?, please comment!
 
Just a quick update.

The good guys at the Carphone warehouse have sent off for some new N900's from a "new batch"

Apparently Nokia have a thing where their first batches are normally crap.

They will call me when they have them and i can look at them and pick one that im happy with.

So im happy that its getting sorted and I don't even have to send my phone off!!

- It was within the 28days since i got it.
- I dont need to send my phone off, So i will have a N900 till I gets replaced.
- free of charge.

+100 internets to the Carphone warehouse.
Will be doing business again.

toto29820 2010-01-17 05:28

Re: Is Dead pixels a general problem on N900?, please comment!
 
have one stuck for black only visable at max brightness ; dont mind still loving my n900


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