I've got a problem with KF. It was unused for 2 or 3 months and looked like fully discharged. I tried to charge it with low-amper charger (5V, 0.55 mA), got it stuck for 5-sec bootloop.
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Leaved it for 2-3 minutes and KF totally turned off, without any reaction on power button (no powering on, no charge indicator). Got original 1.8A charger - no luck. Tried hard reset (from 30 sec to 5 mins) - no luck. Tried different chargers from 0.55 to 2.1A - no luck.
Tried usbboot trick - no luck (firekit stuck on waiting for device, lsusb shows nothing).
Disassembled and reinstall battery connecter shows the same result. Leaved it on charger through usb-ampermeter, it showed power consumption 0.6A with battery attached and 0.2A without battery. After battery being charged for 8 hours ampermeter shows power consumtion in 0.2A (so battery looks like fully charged). Disassembled battery connection and measured voltage between first black battery (from black cords to red cords) and 3rd red battery cord (from red cords to black cords) - it shows 4.2V, so battery looks like fully charged.
Now i have such symptoms:
- No reaction with usb cable attached (both wallet and computer 0.5A usb)
- Powers on by single press (power button light for 2 seconds, display with "press power button for recovery" - for 1 second) and powers off without usb cable attached. No reaction on usb cable attaching in this 2 seconds (and no response for power button being pushed while usb cable is connected).
- No reaction on usbboot at all (both battery connected or disconnected)
Any ideas?
.
Leaved it for 2-3 minutes and KF totally turned off, without any reaction on power button (no powering on, no charge indicator). Got original 1.8A charger - no luck. Tried hard reset (from 30 sec to 5 mins) - no luck. Tried different chargers from 0.55 to 2.1A - no luck.
Tried usbboot trick - no luck (firekit stuck on waiting for device, lsusb shows nothing).
Disassembled and reinstall battery connecter shows the same result. Leaved it on charger through usb-ampermeter, it showed power consumption 0.6A with battery attached and 0.2A without battery. After battery being charged for 8 hours ampermeter shows power consumtion in 0.2A (so battery looks like fully charged). Disassembled battery connection and measured voltage between first black battery (from black cords to red cords) and 3rd red battery cord (from red cords to black cords) - it shows 4.2V, so battery looks like fully charged.
Now i have such symptoms:
- No reaction with usb cable attached (both wallet and computer 0.5A usb)
- Powers on by single press (power button light for 2 seconds, display with "press power button for recovery" - for 1 second) and powers off without usb cable attached. No reaction on usb cable attaching in this 2 seconds (and no response for power button being pushed while usb cable is connected).
- No reaction on usbboot at all (both battery connected or disconnected)
Any ideas?
Written by dd
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