Kindle 4 NT gets frozen in a sleep mode

sha80 · 02-21-2013, 07:43 AM

Hello!
I have a Kindle 4 NT for more than a year and it was just perfect, but once I hadn't use it for a long time and when I got it there was a screen with a message to charge it. So I did. Then I turned it on and everything was fine until it went to a sleep mode with a screensaver. I pressed the 'ON' button but nothing happened. I followed the instruction on the amazon page: http://www.amazon.com/gp/help/custom...829000#restart. My Kindle rebooted and everything was OK until it went to sleep again. I pressed the 'ON' button but the Kindle didn't wake up. I also noticed that there was no green light at all, only yellow one when I charge the Kindle with the adapter or when I plug it into my computer.
When I plug the Kindle into a computer it doesn't recognize the Kindle unless I hold the button for 20 seconds and it gets rebooted. Then it is recognized as a USB drive.
I tried to reset the Kindle to the factory settings but it didn't change anything, the problem still remains. Then I reflashed the main and diagnostic partitions, it didn't help. Then I reflashed partitions and the main kernel, and it still gets frozen in a sleep mode.
Everything else works as usual, I can read books, use Wi-Fi, and so on but if I don't use it for 10 minutes it goes to a sleep mode and gets frozen and I have to reboot it which takes a long time.
Could you please advise me how I can fix this problem?
Regards,
Alexander

HarryT · 02-21-2013, 11:59 AM

Try doing a Factory Reset and see if that helps.

EDIT: Never mind, I see you've already tried that. No idea, in that case - sorry. What do Kindle Customer Service say?

sha80 · 02-22-2013, 07:13 AM

They sent me the instructions similar to http://www.amazon.com/gp/help/custom...829000#restart.

Unfortunately my warranty has expired.

dsmid · 02-23-2013, 01:29 AM

You can try to reflash the firmware with Kubrick LiveCD/LiveUSB.
That might help.

sha80 · 02-23-2013, 07:01 AM

Thanx for advice, I'll give it a try. I am already charging my Kindle.

sha80 · 02-25-2013, 07:56 AM

I just used Kubrick, it didn't help.
I noticed that a reboot command freezes my Kindle and in order to continue rebooting I have to press the 'ON' button.

Maybe it's hardware (or a battery)?

sha80 · 02-26-2013, 07:12 AM

My Kindle goes to a sleep mode in 10 minutes. Do you think it's possible to increase this time to 7 days or more?

dsmid · 02-26-2013, 08:42 AM

On the home screen, type this:

Code:

;debugOn

then this:

Code:

~disableScreensaver

02-21-2013, 07:43 AM	#1
sha80 Junior Member Posts: 5 Karma: 10 Join Date: Feb 2013 Device: Kindle 4 NT	Kindle 4 NT gets frozen in a sleep mode Hello! I have a Kindle 4 NT for more than a year and it was just perfect, but once I hadn't use it for a long time and when I got it there was a screen with a message to charge it. So I did. Then I turned it on and everything was fine until it went to a sleep mode with a screensaver. I pressed the 'ON' button but nothing happened. I followed the instruction on the amazon page: http://www.amazon.com/gp/help/custom...829000#restart. My Kindle rebooted and everything was OK until it went to sleep again. I pressed the 'ON' button but the Kindle didn't wake up. I also noticed that there was no green light at all, only yellow one when I charge the Kindle with the adapter or when I plug it into my computer. When I plug the Kindle into a computer it doesn't recognize the Kindle unless I hold the button for 20 seconds and it gets rebooted. Then it is recognized as a USB drive. I tried to reset the Kindle to the factory settings but it didn't change anything, the problem still remains. Then I reflashed the main and diagnostic partitions, it didn't help. Then I reflashed partitions and the main kernel, and it still gets frozen in a sleep mode. Everything else works as usual, I can read books, use Wi-Fi, and so on but if I don't use it for 10 minutes it goes to a sleep mode and gets frozen and I have to reboot it which takes a long time. Could you please advise me how I can fix this problem? Regards, Alexander

02-26-2013, 08:42 AM	#8
dsmid Linux devotee Posts: 598 Karma: 2069047 Join Date: Feb 2011 Device: Kindle 3, Kindle 4B, Kindle PW2	On the home screen, type this: Code: ;debugOn then this: Code: ~disableScreensaver

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02-21-2013, 11:59 AM	#2
HarryT eBook Enthusiast Posts: 80,939 Karma: 74802221 Join Date: Nov 2006 Location: UK Device: Kindle Voyage, iPad Pro 10.5", iPhone 6	Try doing a Factory Reset and see if that helps. EDIT: Never mind, I see you've already tried that. No idea, in that case - sorry. What do Kindle Customer Service say?

02-22-2013, 07:13 AM	#3
sha80 Junior Member Posts: 5 Karma: 10 Join Date: Feb 2013 Device: Kindle 4 NT	They sent me the instructions similar to http://www.amazon.com/gp/help/custom...829000#restart. Unfortunately my warranty has expired.

02-23-2013, 01:29 AM	#4
dsmid Linux devotee Posts: 598 Karma: 2069047 Join Date: Feb 2011 Device: Kindle 3, Kindle 4B, Kindle PW2	You can try to reflash the firmware with Kubrick LiveCD/LiveUSB. That might help.

02-23-2013, 07:01 AM	#5
sha80 Junior Member Posts: 5 Karma: 10 Join Date: Feb 2013 Device: Kindle 4 NT	Thanx for advice, I'll give it a try. I am already charging my Kindle.

02-25-2013, 07:56 AM	#6
sha80 Junior Member Posts: 5 Karma: 10 Join Date: Feb 2013 Device: Kindle 4 NT	I just used Kubrick, it didn't help. I noticed that a reboot command freezes my Kindle and in order to continue rebooting I have to press the 'ON' button. Maybe it's hardware (or a battery)?

02-26-2013, 07:12 AM	#7
sha80 Junior Member Posts: 5 Karma: 10 Join Date: Feb 2013 Device: Kindle 4 NT	My Kindle goes to a sleep mode in 10 minutes. Do you think it's possible to increase this time to 7 days or more?

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