Switch won’t boot.
- Had a short on PI3USB. Replaced the chip
- Replaced the M92 just in case.
- Noticed with USB breakdown board that 15V VBUS line has strange diode values. Resistance to ground is only 120 ohm
- SYSLINE has normal resistance
- I didn’t find any shorts, FETs seem to be okay and also BQ.
What could pull the VBUS line down? Thanks!