Troubleshooting A questions about PW quality control

Smartie · 09-21-2015, 03:01 PM

I want to buy an used PW2, met two peoples. Unfortunately, both has a dead pixels on the screen(one has two and one has one). It is very bright pixels(someone said it is not dead pixel, it is just imperfection). I am just wondering is this common quality control issue or just bad luck. I have a PW1 and it is fine.

Thanks

cvkemp · 09-21-2015, 03:09 PM

I have a PW2 that, I no longer use since getting my voyage that I have seen no issues with.

Dr. Drib · 09-21-2015, 03:18 PM

Reminder, please: Take this to the Flea Market, if anyone will be making any deals.

Thank you.

Don
(Moderator)

cvkemp · 09-21-2015, 03:23 PM

Quote:

Originally Posted by Dr. Drib

Reminder, please: Take this to the Flea Market, if anyone will be making any deals.

Thank you.

Don
(Moderator)

Not wanting to sell it.
It is my backup.

pidgeon92 · 09-21-2015, 04:33 PM

I don't see anything that looks like a dead pixel on my PW2. Sometimes some dirt or dust on the screen can make it appear so, but I haven't had any issues that didn't clean off.

dordale · 09-21-2015, 06:58 PM

You can do a search on this forum for "pinholes". I remember quite a few people posting about these when the PW1 and PW2s were first released. I'm not sure how prevalent the problem is, but certainly not unusual. Personally, I don't have any pinholes on my PW2 (or on my Voyage).

barryem · 09-24-2015, 10:54 PM

I have a PW1 and a PW2. In the past I had another one of each but without 3G which are now being used by friends. I live in a retirement home with a number of Paperwhite users. I've yet to see my first dead pixel on any ereader.

I've also had quite a few other Kindles and Kobos and Nook e-ink readers as have many of my neighbors. Still no dead pixels.

They happen and when something happens now and then you're liable to run into two of them. The odds are in favor of that occasionally happening. But I don't think it's at all common.

In all the many Kindles I've had and dealt with the only problem I've ever seen was when a Basic Kindle of about 2 years ago was returned to me by a friend with a scratched screen. Even though it was obviously user error Amazon cheerfully replaced it for me under warranty.

These things are good. So is Amazon.

Barry

Barbara1955 · 09-28-2015, 03:26 AM

All I know is IF its a Dead Grey spot don't buy. I don't understand a Bright white spot since the e-ink readers don't have Backlights.

tomsem · 09-29-2015, 01:36 AM

Quote:

Originally Posted by Katie1

All I know is IF its a Dead Grey spot don't buy. I don't understand a Bright white spot since the e-ink readers don't have Backlights.

I've never seen one myself, but this seems possible if the laser cutting the pits into the light distribution layer hiccups and creates a defect that allows light to leak out in the wrong direction.

Barbara1955 · 09-29-2015, 02:27 AM

Quote:

Originally Posted by tomsem

I've never seen one myself, but this seems possible if the laser cutting the pits into the light distribution layer hiccups and creates a defect that allows light to leak out in the wrong direction.

Lights are LED like in a flashlight ...Not cutting Laser! Just tiny light bulbs.

pidgeon92 · 09-29-2015, 07:31 PM

Quote:

Originally Posted by Katie1

Lights are LED like in a flashlight ...Not cutting Laser! Just tiny light bulbs.

They meant the lasers used during the manufacturing process, not the lights on the Kindle itself.

barryem · 09-29-2015, 09:35 PM

Quote:

Originally Posted by Katie1

All I know is IF its a Dead Grey spot don't buy. I don't understand a Bright white spot since the e-ink readers don't have Backlights.

I haven't seen this personally but I've read that a bright spot can result from scratching or poking the layer of the screen that distributes the light. I wonder if that's what he's seeing.

Barry

Josieb1 · 09-30-2015, 02:41 AM

I've had pinholes on a kobo Aura but never on a Paperwhite and I've had every model of Kindle ereader.

sparklemotion · 09-30-2015, 12:52 PM

Quote:

Originally Posted by Smartie

I want to buy an used PW2, met two peoples. Unfortunately, both has a dead pixels on the screen(one has two and one has one). It is very bright pixels(someone said it is not dead pixel, it is just imperfection). I am just wondering is this common quality control issue or just bad luck. I have a PW1 and it is fine.

Thanks

From my experience, and the experience of friends and others on this forum, it seems to be fairly common. There was a lot of talk about it on here when the PW 1 and 2 came out. I have one on my PW2, but it's in such a place where it doesn't bother me too much.

jswinden · 09-30-2015, 01:57 PM

Yep, the pinhole effect is likely from an imperfection on the surface of the light layer that sit on top of the eInk screen. Whether it is a bubble due to faulty manufacturing, or a scratch, or whatever, it creates a very tiny, but bright pinhole of light on the screen. Some PWs had one or more of them, many, perhaps most, did not. But there were some PWs that had several pinholes. They do not effect the operation of the PW, but they might bother the user as s/he reads due to the distraction of a tiny bright spot on a page.

09-21-2015, 03:01 PM	#1
Smartie Addict Posts: 285 Karma: 1150760 Join Date: Apr 2011 Device: Kindle PW,KOBO H2O	A questions about PW quality control I want to buy an used PW2, met two peoples. Unfortunately, both has a dead pixels on the screen(one has two and one has one). It is very bright pixels(someone said it is not dead pixel, it is just imperfection). I am just wondering is this common quality control issue or just bad luck. I have a PW1 and it is fine. Thanks

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09-21-2015, 03:09 PM	#2
cvkemp Loving life Posts: 1,420 Karma: 7991496 Join Date: Mar 2009 Location: Hot Springs Village, Arkansas Device: PaperWhite 5,iPhone 13, IPad, MacBook Air	I have a PW2 that, I no longer use since getting my voyage that I have seen no issues with.

09-21-2015, 03:18 PM	#3
Dr. Drib Grand Sorcerer Posts: 45,037 Karma: 56751447 Join Date: Jan 2007 Location: Peru Device: Kindle: Oasis 3, Voyage WiFi; Kobo: Libra 2, Aura One	Reminder, please: Take this to the Flea Market, if anyone will be making any deals. Thank you. Don (Moderator)

09-21-2015, 04:33 PM	#5
pidgeon92 Wizard Posts: 3,144 Karma: 8426142 Join Date: Jun 2008 Location: Chicago, IL Device: Kindle PW2, Kindle Voyage, Kindle DXG, Boox M90, Kobo Aura HD	I don't see anything that looks like a dead pixel on my PW2. Sometimes some dirt or dust on the screen can make it appear so, but I haven't had any issues that didn't clean off.

09-21-2015, 06:58 PM	#6
dordale Wizard Posts: 1,731 Karma: 3472866 Join Date: Apr 2008 Device: Sony PRS-650 & 350; Kindle Voyage; Kobo Aura HD, Aura One, and Forma	You can do a search on this forum for "pinholes". I remember quite a few people posting about these when the PW1 and PW2s were first released. I'm not sure how prevalent the problem is, but certainly not unusual. Personally, I don't have any pinholes on my PW2 (or on my Voyage).

09-24-2015, 10:54 PM	#7
barryem Wizard Posts: 2,459 Karma: 68781975 Join Date: Oct 2012 Location: Arkansas Device: Paperwhite 4	I have a PW1 and a PW2. In the past I had another one of each but without 3G which are now being used by friends. I live in a retirement home with a number of Paperwhite users. I've yet to see my first dead pixel on any ereader. I've also had quite a few other Kindles and Kobos and Nook e-ink readers as have many of my neighbors. Still no dead pixels. They happen and when something happens now and then you're liable to run into two of them. The odds are in favor of that occasionally happening. But I don't think it's at all common. In all the many Kindles I've had and dealt with the only problem I've ever seen was when a Basic Kindle of about 2 years ago was returned to me by a friend with a scratched screen. Even though it was obviously user error Amazon cheerfully replaced it for me under warranty. These things are good. So is Amazon. Barry

09-28-2015, 03:26 AM	#8
Barbara1955 Non-Techy Posts: 4,455 Karma: 15499273 Join Date: Feb 2011 Location: WV---USA Device: Samsung Cell Phone & Amazon Fires & Kobo eReaders	All I know is IF its a Dead Grey spot don't buy. I don't understand a Bright white spot since the e-ink readers don't have Backlights.

09-30-2015, 02:41 AM	#13
Josieb1 Grand Sorcerer Posts: 5,050 Karma: 18018738 Join Date: Nov 2009 Location: UK Device: Kindle Scribe, PW SE & Kindle 2022, Kobo Libra 2	I've had pinholes on a kobo Aura but never on a Paperwhite and I've had every model of Kindle ereader.

09-30-2015, 01:57 PM	#15
jswinden Nameless Being	Yep, the pinhole effect is likely from an imperfection on the surface of the light layer that sit on top of the eInk screen. Whether it is a bubble due to faulty manufacturing, or a scratch, or whatever, it creates a very tiny, but bright pinhole of light on the screen. Some PWs had one or more of them, many, perhaps most, did not. But there were some PWs that had several pinholes. They do not effect the operation of the PW, but they might bother the user as s/he reads due to the distraction of a tiny bright spot on a page.

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