12-17-2019, 06:26 AM
(12-17-2019, 12:52 AM)hns Wrote: Hm. The SD card is in the right position and is obviously recognised because there is not RGB bar if it is inserted.
Maybe the battery is not yet well charged and then many smartphones have problems booting up.
I'll check battery status and cable next.
Well, the batters is a white and unlabeled brick with 4 gold contacts and 52g weight.
First, I though it is only a mechanical dummy, because I could not measure any voltage across any pair of gold contacts.
But in Ohm mode I got ca. 50 kOhm and 2.7kOhm between 3 of the 4 pins.
The fourth pin seems to be unconnected.
Unfortunately I could not match it with the schematics (Page 6 "Power") where the battery connector J600 should have 6 pins?
So at the moment I conclude that the battery is deeply discharged and the protector circuit has disconnected it.
How can I revitalize it?
Does the PinePhone do trickle charging if powered off?
