I bought a defective GoPro Hero 9 on eBay and this is what happened

A real YouTuber needs quality recording equipment and this includes a good quality action camera. In an effort to upgrade from my old generic one, I recently purchased a used GoPro Hero 9 Black on eBay. The condition was marked as “for parts or repair only” and “not working as intended”. When the price fell below a certain threshold, I decided to go for it.
But was this a good move? What about the additional costs I would incur to make this a functional camera?

Here is a video that was entirely shot on the GoPro Hero 9:
https://youtu.be/zIUAN0qf8HM?si=l0extfTiXMhm3XDb

Why not show your appreciation for this video by sending some SuperThanks?

Of course you can also: https://www.buymeacoffee.com/jorgschlagL

Or make a purchase using one of those affiliate links:

GoPro Hero 12: https://amzn.to/3uZZuKy

GoPro Hero 9: https://amzn.to/3RIGesX

GoPro Charger with 2 Enduro Batteries: https://amzn.to/3GKH3fA

GoPro Hero 10: https://amzn.to/3RpL3XD

DJI Osmo Action 4: https://amzn.to/3v0dtA3

Insta 360 Ace Pro: https://amzn.to/3Tq0Hov

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DJI Air 2 S: https://amzn.to/47DWrXt

DJI Air 3: https://amzn.to/3OBRwgN

DJI Mini 2: https://amzn.to/3OXRyBc

DJI Mini 3 Pro: https://amzn.to/47yY20A

DJI Mavic 3 Classic: https://amzn.to/3QIYjbg

Potensic Atom: https://amzn.to/3uHW1jK

This video was shot with the following gear:

Sony ZV 1: https://amzn.to/3sn8nwg

Tascam DR 10 L: https://amzn.to/3sdsBsD

Music: Parisian Cafe by Aaron Kenny