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Junket · 12-05-2019, 01:25 AM

The picture you added is from a different and much older Kindle model. It looks like a Kindle keyboard model reader. AFAIK there is no reset switch like that for your KT3. A hard reset on your model would normally be done by making choices on a screen menu or alternately with a serial connection. Mechanical reset switches like that used to be more common on Palms and older Kindles but are seldom seen on newer devices, Kindle or otherwise. So that really isn't an option on your Kindle.

Can I assume that there has been no screen activity at all throughout this? This would be useful to know.

The LED blinking pattern suggests that it is blinking a diagnostic code which would be very useful information if we knew what it meant. Amazon hasn't graced us with a full list of LED diagnostic codes such as would be found in a service manual but a call to Amazon support reveals that this means that you have a critical battery fault.

So we think that the battery has charged because the LED goes from amber to green in the expected manner. But the processor still isn't getting a sufficient voltage.

To me that suggest the most likely problem is a failing battery. But it could also be a failed voltage regulator, capacitor or other power component. Or it might simply be an egregious software fault that is spurning misleading data. You should try to get the battery tested. Perhaps you can find a full service battery shop or a general electronics dealer that could take a moment to measure the battery voltage for you? Or somebody that you could borrow a multimeter or voltage meter from?

A normal battery would be about 4.2 volts fully charged. And 3 volts fully discharged. Anything below 3 volts would suggest a defective battery. If you need a new battery they appear to be about $10 - $15 through ebay, aliexpress, etc.

If the battery is OK or you can't find a way to check it, then I would suggest that you borrow or buy a serial port adapter ($3 - $15). This would give detailed information about what the processor is doing, the likely failure point and battery voltage. As well as giving us a way to update firmware or do a hard reset if necessary.

12-05-2019, 01:25 AM	#7
Junket Nil adsuetudine maius Posts: 278 Karma: 500000 Join Date: Nov 2019 Location: US Device: PW4	The picture you added is from a different and much older Kindle model. It looks like a Kindle keyboard model reader. AFAIK there is no reset switch like that for your KT3. A hard reset on your model would normally be done by making choices on a screen menu or alternately with a serial connection. Mechanical reset switches like that used to be more common on Palms and older Kindles but are seldom seen on newer devices, Kindle or otherwise. So that really isn't an option on your Kindle. Can I assume that there has been no screen activity at all throughout this? This would be useful to know. The LED blinking pattern suggests that it is blinking a diagnostic code which would be very useful information if we knew what it meant. Amazon hasn't graced us with a full list of LED diagnostic codes such as would be found in a service manual but a call to Amazon support reveals that this means that you have a critical battery fault. So we think that the battery has charged because the LED goes from amber to green in the expected manner. But the processor still isn't getting a sufficient voltage. To me that suggest the most likely problem is a failing battery. But it could also be a failed voltage regulator, capacitor or other power component. Or it might simply be an egregious software fault that is spurning misleading data. You should try to get the battery tested. Perhaps you can find a full service battery shop or a general electronics dealer that could take a moment to measure the battery voltage for you? Or somebody that you could borrow a multimeter or voltage meter from? A normal battery would be about 4.2 volts fully charged. And 3 volts fully discharged. Anything below 3 volts would suggest a defective battery. If you need a new battery they appear to be about $10 - $15 through ebay, aliexpress, etc. If the battery is OK or you can't find a way to check it, then I would suggest that you borrow or buy a serial port adapter ($3 - $15). This would give detailed information about what the processor is doing, the likely failure point and battery voltage. As well as giving us a way to update firmware or do a hard reset if necessary.