I use https://log.repairdats.com/ (MantisBT) to note down everything that falls on my hands, so I keep track of what usually fails in every console/etc.
- Project: Company (ie: Sony, Nintendo...).
- Sub-project: Hardware (ie: PlayStation, Mega Drive...).
- Category: Type of hardware (ie: Consoles, Accessories...).
- ID: Hardware name + ID (ie: Mega-CD: HAA-2910).
- Issue: What's the issue (ie: Stuck after TMSS screen).
- Queued: Waiting on the self to be repaired.
- No components: I'm waiting for needed supplies to arrive.
- Done: Finished, either repaired or discarded (check resolution).
- Repaired: Came back to life.
- For parts: Can't repair that mess, will use it for parts.
- aesthetic: Things like broken plastic pieces, scratches...
- audio: Audio not working properly.
- boot: Power works but doesn't boot properly (either to typical blank screen or to its BIOS).
- game: Hardware boots BIOS/OS correctly, but doesn't boot games.
- mechanical: Things like buttons not working.
- power: No power at all.
- video: Video not working properly.