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Old 02-15-2010, 02:08 PM   #51
TheBard
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Posts: 49
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Join Date: Jan 2010
Location: USA
Device: Kobo Touch, Aura, Clara ...
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Originally Posted by TheBard View Post
Will keep checking, and see if it happens again at the 1/2 charge point.

Happened again, with rechargeable batteries.

Three charge bars (3/4 full). With no warning, the screen blanked.
Replaced rechargeables with fresh ones. JetBook still locked - no screen activity.

Removed rechargeables and inserted alkalines.
Went through the firmware reload procedure... Took a lot longer this time, compared to last time. LED stayed ON while JetBook logo was shown. I can understand why people might think nothing is happening at this point.

Eventually, the firmware update screen appeared. After pressing OK, the screen changed to the "folder and e", and the LED showed activity (blinked a lot).

Eventually loaded firmware and books, but lost bookmarks.

I wonder if there is an internal battery or capacitor that is supposed to maintain memory when batteries are changed. If so, it seems not to be working on my unit.
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