Thread: Kindle Keyboard 3G – power slider stops working randomly, USB stops enumerating;
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Old 02-23-2026, 01:50 PM   #5
gbm
Wizard
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Join Date: Jun 2010
Device: Kobo Clara HD,Hisence Sero 7 Pro RIP, Nook STR, jetbook lite
You have a bad slider or a bad battery. You should think about replacement, or take a chance on buying a parts reader.

Rule of thumb if the cost to repair is equal to half the cost or greater than the cost of new, then buy new.

bernie
Quote:
Originally Posted by dmitryshura View Post
Thanks for the suggestion!

I’m aware of the common K3 power slider/spring failure, but my symptoms don’t fully match a purely mechanical issue.

Key observation:
If I connect external power (USB charger) and reboot the Kindle while it stays connected to power, everything works normally and the issue does not appear.
The problem starts again only after I unplug the power cable.

If it was only the slider spring/mechanics, I would expect the behavior to be identical regardless of whether a charger is connected.

So at the moment I suspect something related to power management / battery mode vs external power mode (or a battery/PMIC-related state), rather than the slider mechanism itself.

Did you ever notice your slider/spring failures behaving differently on charger vs on battery?
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