I have a new switch, that just starts ok, but not charging battery at all. Charging symbol is displayed when using PD original charger, nothing shown for 5V source (powerbank) but battery actualy depletes.
I have already changed MT92 and also BQ chips (two times) so i suspect there is something else misbehaving.
Some basic measures with the original Nintendo charger and battery (console off)
- No obvious shorts
- Fuse - 15 V both sides
- BQ
PIN 1 (VBUS) 15 V
PINS 13,14 - 3,2V (battery charge)
also BQ seems to be hot (around 65 Celsius according to my FLIR) but this is probably normal
- M92
PIN 5 - 4,5 V
PIN 6 - 0 V
Both go to 3,3 V when console is powered on
PIN 23 S1_DRV_G2 - 21 V
PIN 22 S1_DRV_SRC - 15 V
PIN 21 S2_DRV_G1 21 V
PINS 35 and 37 working fine showing connector orientation (0,2 and 0,9 V or opposite)
P13USB side also no shorts, also 3,3V rail seems (measured on PIN5 and 6) to work just fine when console is on
Any hints where to look next ? What else is involved in battery charging ? Mosfets ? PP5 ?
I have already changed MT92 and also BQ chips (two times) so i suspect there is something else misbehaving.
Some basic measures with the original Nintendo charger and battery (console off)
- No obvious shorts
- Fuse - 15 V both sides
- BQ
PIN 1 (VBUS) 15 V
PINS 13,14 - 3,2V (battery charge)
also BQ seems to be hot (around 65 Celsius according to my FLIR) but this is probably normal
- M92
PIN 5 - 4,5 V
PIN 6 - 0 V
Both go to 3,3 V when console is powered on
PIN 23 S1_DRV_G2 - 21 V
PIN 22 S1_DRV_SRC - 15 V
PIN 21 S2_DRV_G1 21 V
PINS 35 and 37 working fine showing connector orientation (0,2 and 0,9 V or opposite)
P13USB side also no shorts, also 3,3V rail seems (measured on PIN5 and 6) to work just fine when console is on
Any hints where to look next ? What else is involved in battery charging ? Mosfets ? PP5 ?