Switch won't boot (low VBUS resistance)

Nintendo Questions Nintendo Switch
1

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!

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2

remove port and check again, you never know what port been suffered

3

Changed pi3 and m92?but still short? Hv u try to remove emmc and check the short again?