Switch won't dock

Hi guys! I’m repairing a switch for someone with a weird issue. It wasn’t charging so ended up replacing BQ and M92, however the console wont dock. I spoke to the person who it belongs to, and they said it didn’t dock when it was working either. I have replaced the USB port, p13 many times and obviously m92/BQ as I said, but replaced again to be certain. The filters are all fine too.

I’ve done so much poking around now, and I am really at a loss for what it could be now. If anyone was any insight, that would be great!