Some of those connectors could appear defective if debris had gotten inside.
Was there any result otherwise, with NVRAM/PRAM reset, tried at least twice?
"Settings that can be stored in NVRAM include sound volume, display resolution,
startup-disk selection, time zone, and recent kernel panic information.."
• Reset NVRAM or PRAM on your Mac - Apple Support
https://support.apple.com/en-us/HT204063
If you experience issues with sleep, wake, power, charging your Mac
notebook battery, or other power-related symptoms, you might need
to reset the SMC (System Management Controller).
Consider any/all resets 'as troubleshooting' & any positive effect would be a plus!
Good luck & happy trails!🌻|🐝