Jeff Chen

Jeff Chen

@jeffchen.bsky.social

🇨🇦 I sing Jeff Chang. I design 3D printed stuff with electronics inside. I play games. 【English/中文/日本語】 Ko-Fi☕️ https://ko-fi.com/designerjeffchen

1,795 Followers 192 Following 3,978 Posts Joined Aug 2023
17 hours ago
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Woah, cheap Amazon anti-static actually works?🤡

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1 day ago

I’d guess you fried something without noticing🤔 But let’s summon the real expert @nataliethenerd.com 🫠

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1 day ago

Whaaaaaat?👀

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1 month ago
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MGS1 full game map 😇https://www.deviantart.com/vgcartography/art/Metal-Gear-Solid-Shadow-Moses-Mission-Map-995900066

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1 day ago

Hence why I usually never participate in any bidding🫠

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1 day ago

I saw them as soon as these listings were up. They caused my wallet to panic and I had to hush it to sleep in my cuddle🤡

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2 days ago

The VIA cards rarely gave me 2.0 speed no matter what I tried back
in the days😂

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2 days ago

All you need to ruin a day is one unruly card🤡

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2 days ago
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A discovery: if you happened to have this NEC USB2.0 host card in your Windows 98 machine alongside a Voodoo2, you are in for a weird and scary incompatibility problem🤡

Disabling the card doesn’t help. You must remove it physically🫠

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2 days ago
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And we are back in business🫠

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2 days ago

In this economy, I felt like I was in a dream🤪

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2 days ago
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So this card had the following faults:
- FBI: P8 & 9 bridged
Missing pin (fixed by Simon)
- TMU1: TF_Data 12 & 13 bridged
- TMU0: Solder flake between FT_data
- RAM U14 : I/O 12 & 13 shorted by a thin piece of wire (from wick?)
- Board: R52 Missing

What a mess😂

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2 days ago
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Then of course, I had to run it in SLI configuration for another few hours just to make sure😌

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2 days ago
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Somehow all the high density chips were replaced with low ones on this Rev.C card. So I had to populate all the missing RAM chips to give it the full RAM configuration🤔

And then I tested it for a few hours on its own, with success😌

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2 days ago
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But the same error persisted. I then did a very close inspection and noticed this R52 was missing. It’s a pulldown resistor for a data line, which should be necessary. And that finally fixed the problem.

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2 days ago
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However, that still didn’t solve the problem.

Mojo gave me these errors, so I had to take a look under the FBI RAM chips. And there was actually one with a problem - a piece of copper wire stuck between data lines.

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2 days ago
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Turns out, the card had some very tiny bridges. One on the FBI, another on TMU1, as well as a flake of loose solder on TMU0😂

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2 days ago
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The card would consistently detect, but any initialization would fail with weird inconsistent errors.

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2 days ago
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Finally got the package of the broken Voodoo 2 from @aergan.com, except the box is so full of memories that the Voodoo is barely visible🤪

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2 days ago
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The fan inside my 2009 Mac mini keeps getting stuck after years of service. So here’s me spending the day installing Ubuntu and Klipper on a passive-cooled NUC to make sure that never happens again🫠

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3 days ago

Any time after the year 2000 is considered “current” time by my brain🤪

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3 days ago

And that was after he had to replace a broken rocker power switch on his expensive top-of-the-line 1200W Corsair PSU, which was switched on and off for less than 10 times. It always pours when it rains🫠

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4 days ago

So that’s a shitty one🫠 maybe pre-AI era machine translation stuff.

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4 days ago

Well don’t touch the lightning!⚡️🤪

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4 days ago

My friend had to reflash his BIOS blind last week after a mysterious no-boot happened. I guess the nvram can get so corrupted that the damn machine wouldn’t know what to do🤷🏻‍♂️

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4 days ago

Too much is changed or lost through translation no matter how careful the work is done, save for the careless ones🫠 This is why I stopped waiting for English versions of Japanese games and just taught myself Japanese🤷🏻‍♂️

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4 days ago

Once in a while.🫠

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5 days ago

Somehow there are always a bunch of dust bunnies around the power area of the Genesis. I wonder why...🤔

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5 days ago

I had the suspicion first, so there was at least a target. That made things a bit easier. Sadly all the pins on the AGP edge were fine and that gave me some false hope.

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5 days ago

You find which pads the BIOS chip pins go to under the core and then find them on the bottom of the core and measure diode value. If it's OL it's bad.

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