Annoying problem with JBL

demingite · 07-20-2011, 11:03 AM

My JBL has developed an annoying habit which has increased in frequency lately. It works fine when it is up and running, but very often, upon being turned on, it displays the main menu screen instead of the the last page I was reading, and it is completely locked up. It won't respond to any buttons, including the power button. The only fix is to pull the batteries or use the reset button. Then I have to navigate back to the book I was reading. All bookmarks are gone. This is with books on my SD card (epub, both unlocked and DRMed). Any suggestions?

CF

Ken Maltby · 07-20-2011, 12:51 PM

Assuming no other factor, like a change in firmware, when a device has a problem that
gets worse over time, a failing component is suspect. If the device is still in its
warranty period, it might be best to contact Ectaco.

Another possibility would be some developing memory corruption. For that you could try
reformatting the internal memory with the repair options set. You could also try
restoring the factory settings, using the Diagnostic Screen.

Luck;
Ken

demingite · 07-20-2011, 04:00 PM

Thanks. I will play around with it a bit, then contact Ectaco if I can't fix it. I'm not having this problem with TXT files loaded on the internal memory, so it may be an EPUB problem or an SD card problem.

demingite · 07-22-2011, 10:24 AM

I played around with the problem. I started by moving the book from the memory card to the internal memory, and then running the JBL without the SD card inserted, in case it was a problem with the card, but I still had the same issue. I noted that I did not see this problem at all with TXT books, and occasionally with another EPUB book. I then converted the problem book to another format, and the problem went away. I wonder if anyone else has had a similar issue. The book in question was an EPUB from Project Gutenberg.

gbm · 07-22-2011, 10:45 AM

Using calibre convert epub to epub, and use the flatten epub file structure--under epub output. Please let us known if this works.

bernie

demingite · 07-22-2011, 11:21 AM

Thanks Bernie, I will try that this weekend.

07-20-2011, 11:03 AM	#1
demingite Connoisseur Posts: 70 Karma: 400000 Join Date: Nov 2010 Location: New Mexico Device: Aluratek Libre Pro (gifted), Ectaco Jetbook Lite	Annoying problem with JBL My JBL has developed an annoying habit which has increased in frequency lately. It works fine when it is up and running, but very often, upon being turned on, it displays the main menu screen instead of the the last page I was reading, and it is completely locked up. It won't respond to any buttons, including the power button. The only fix is to pull the batteries or use the reset button. Then I have to navigate back to the book I was reading. All bookmarks are gone. This is with books on my SD card (epub, both unlocked and DRMed). Any suggestions? CF

07-22-2011, 10:24 AM	#4
demingite Connoisseur Posts: 70 Karma: 400000 Join Date: Nov 2010 Location: New Mexico Device: Aluratek Libre Pro (gifted), Ectaco Jetbook Lite	Tracking down problem with some EPUB books I played around with the problem. I started by moving the book from the memory card to the internal memory, and then running the JBL without the SD card inserted, in case it was a problem with the card, but I still had the same issue. I noted that I did not see this problem at all with TXT books, and occasionally with another EPUB book. I then converted the problem book to another format, and the problem went away. I wonder if anyone else has had a similar issue. The book in question was an EPUB from Project Gutenberg.

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07-20-2011, 12:51 PM	#2
Ken Maltby Wizard Posts: 4,465 Karma: 6900052 Join Date: Dec 2009 Location: The Heart of Texas Device: Boox Note2, AuraHD, PDA,	Assuming no other factor, like a change in firmware, when a device has a problem that gets worse over time, a failing component is suspect. If the device is still in its warranty period, it might be best to contact Ectaco. Another possibility would be some developing memory corruption. For that you could try reformatting the internal memory with the repair options set. You could also try restoring the factory settings, using the Diagnostic Screen. Luck; Ken

07-20-2011, 04:00 PM	#3
demingite Connoisseur Posts: 70 Karma: 400000 Join Date: Nov 2010 Location: New Mexico Device: Aluratek Libre Pro (gifted), Ectaco Jetbook Lite	Thanks. I will play around with it a bit, then contact Ectaco if I can't fix it. I'm not having this problem with TXT files loaded on the internal memory, so it may be an EPUB problem or an SD card problem.

07-22-2011, 10:45 AM	#5
gbm Wizard Posts: 2,082 Karma: 8796704 Join Date: Jun 2010 Device: Kobo Clara HD,Hisence Sero 7 Pro RIP, Nook STR, jetbook lite	Using calibre convert epub to epub, and use the flatten epub file structure--under epub output. Please let us known if this works. bernie

07-22-2011, 11:21 AM	#6
demingite Connoisseur Posts: 70 Karma: 400000 Join Date: Nov 2010 Location: New Mexico Device: Aluratek Libre Pro (gifted), Ectaco Jetbook Lite	Thanks Bernie, I will try that this weekend.

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