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techknight

@thetechknight.bsky.social

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techknight @thetechknight.bsky.social · Nov 13

- I am an electronics repair technician and engineer
- Severe weather nerd with an addiction to watching storms
- Embedded developer/engineer
- I love tinkering with, repairing and hoard-- erm.. collecting vintage electronics and computers 😅
- Reverse engineering
- Fellow neurodivergent (ASD1/Aspie)

Lunalight | Obsidianwing 🐇 @obsidianwing.bsky.social · Oct 17

- I'm a German Weather Geek
- I was a Rabbit Mom for over 20 Years
- I'm an Illustrator and semi-photographer
- I love hoarding Painting supplies and forgetting about 50 % of them.
- I'm a Neurodivert on Autism Spectrum

Tiff Fortier @tornadotiff.bsky.social · Oct 17

Hey #wxtwitter I made an account here! Here’s a little introductory bio about me:
- I’m an operational meteorologist with an interest in coastal mesoscale processes
- I’m a competitive powerlifter
- I own a photography business
- I have a Alaskan Goldenmute

Tell me some stuff about yourself!

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techknight @thetechknight.bsky.social · 11h

This is how many bad parts I've discovered and removed so far, and those are the ones I've detected that were internally shorted

techknight @thetechknight.bsky.social · 18h

I released a Public Service Announcement video on why you cannot use a Macintosh Portable without a good battery, on a Powerbook or after-market AC adapter: youtu.be/ed7-AqrY70s

PSA: Macintosh Portable Powerbook AC Adapter Damage

YouTube video by THEtechknight

youtu.be

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techknight @thetechknight.bsky.social · 19h

It looks like someone tried to use a powerbook charger with this thing. You absolutely cannot do that because this is the end result. The 5.2 volt regulator is unstable without a proper reference from the battery. This board is probably EOL

techknight @thetechknight.bsky.social · 19h

The board looks pretty good on first glance. Or is it? Take a closer look and see if you can spot the problems

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techknight @thetechknight.bsky.social · 19h

Million dollar question is always why 😭

techknight @thetechknight.bsky.social · 20h

Thats the first time ive encountered that on a portable RAM card, and on the BOTTOM side... so someone did that and then shoved the card back in there.

techknight @thetechknight.bsky.social · 20h

Well that is certainly unexpected

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techknight @thetechknight.bsky.social · 21h

Another day, another Macintosh portable sent in for repair. I see a lot of these

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techknight @thetechknight.bsky.social · 4d

Buy a new cable from jcs-1 or Androda. @museumjoe.bsky.social

techknight @thetechknight.bsky.social · 4d

Start between the 4 chips in the rear to the ports, and back to the SCC. SChematic is available.

techknight @thetechknight.bsky.social · 4d

There's another one fixed. What a pain in the butt this one was. Almost everything that could be wrong with a portable, this one has/had. I still need to remove the board AGAIN and fix traces for the keyb connector.