Hello all,
Yesterday I installed picofly to the lite and was able to create the nand backup, create partitions and also install some games using dbi. All was perfect until today.
Yesterday I left the switch with the screen off and today the screen was black, I could here the sounds of the SO when pressing arrows but nothing was shown on screen. Then I forced a turn off pressing the power button until the screen turns off.
Until then no more power. I have opened the switch to see if any connection is wrong and everything seems okay.
I have seen that after disconnecting the battery and repluging it again the picofly will flash for 1 second then it will stay off.
I have removed all the flex pcbs of the picofly installation and cleaned everything to see if the switch now boots but nothing.
I have testes that the battery can charge and it is now at 4.02 V. Also I have measured the 3.3V line and is OK.
Note: I am a hardware engineer but I am a bit lost as I don’t know this board. If anyone has some reference of the expected voltages o resistance on the test point this will be helpful.
I have used a thermal camera to see if there is any Hotspot and I can see a subtle heating of this components(close to the 3.3v of picofly) but not sure if shorted. (can’t upload photo)
I have measured the cpu cap and they have around 12 ohm to gnd on one end and 0.2 on the other so they seem okai.
I suspect from a supply problem and maybe some ressetsble fuse triggering. But don’t know where they are.