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#powerbook

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Sam

After more than a month of on-and-off work reading datasheets, routing traces in KiCad and ordering components from distributors I managed to put together my #powerbook 165c RAM expansion board! 🥳🥳

This was definitely the most challenging thing I've ever built, but super super satisfying to see completed.

If you want to know more: the KiCad project is up on Github (github.com/svkampen/ramdemptio), and I am planning on writing a big blogpost about the whole process, which I'll toot about when it's up.

#VintageApple#retrocomputing
Continued thread
mmu_man

So, the only thing I hate more than people forcing me to published unfinished work because they are redoing what I spend nights already doing, is people wasting time doing what I already did…

github.com/mmuman/cad-mac-pb50

GitHubGitHub - mmuman/cad-mac-pb500-pwrconn: DIY Power Connector and USB-C adapter for PowerBook 500 SeriesDIY Power Connector and USB-C adapter for PowerBook 500 Series - mmuman/cad-mac-pb500-pwrconn
#Mac68k#PowerBook#PowerBook5xx
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Dave🌱

With that success under my belt, I felt hopeful. The next step was to find out the polarizing filter's orientation, as that varies by display. I wasn't able to find this online for this specific model, so I thought I'll just order a few in the obvious orientation choices. Easy.
I initially didn't order the 45 degrees variant, because I thought; surely it's not 45 degrees, right? That'd be a silly number.
Right?
It was 45 degrees. 🤦
#MARCHintosh #Apple #Macintosh #PowerBook #5300C #RetroComputing

Replied in thread
Dave🌱

But I digress.. the residue has to go, and no amount of alcohol was doing anything to it. I found this recommendation for a certain cleaning liquid designed for this very purpose, so I ordered that and gave it a try. To my surprise, it worked amazingly well.
I put two paper towels on the display, drenched these in the liquid, let it sit for a bit, and then wiped everything off. That's it, super simple. The screen looks gorgeous!
#MARCHintosh #Apple #Macintosh #PowerBook #5300C #RetroComputing

Replied in thread
Dave🌱

And the smell! Don't get me started on the smell. I did this in front of an open window wearing a mask, but still had to walk away. Just the act of removing the film awakened this positively vile chemical stench that just can't be right.
Kind of terrifying we're normally sitting in front of this (while warm from being powered on!). I wonder if this stuff slowly seeps out too over the years? Yikes.
#MARCHintosh #Apple #Macintosh #PowerBook #5300C #RetroComputing

Continued thread
Dave🌱

I mention scary because have you ever tried to apply a screen protector to a phone display? Yeah, well, I suck at that. This would be that, but bigger *and* required removing the old polarizing filter without, you know, destroying the display in the process. I know what I'm doing, I lie to myself.
Anywho, in for a penny.. Fortunately the filter came off fairly easily. But by golly did it leave a *ton* of glue residue behind. Hoboy.
#MARCHintosh #Apple #Macintosh #PowerBook #5300C #RetroComputing

Dave🌱

Even though I completed this particular challenge a few months ago, I hadn't shared about it yet; Restoring the display of my #Apple #Macintosh #PowerBook #5300C suffering from vinegar syndrome.
This was the "scariest" #RetroComputing project I have tackled yet, especially as the 5300C is one big brittle plastic design disaster. Even just *glancing* at it has parts snap off and explode left and right 😅

But, I digress. Here's what we were dealing with.
#MARCHintosh

Daniele Verducci 🧉
It's week end, so again on the #powerbook 170.
I removed the cmos battery to avoid future leaks, and made the trackball finally work replacing a capacitor and cleaning/re-setting all the connectors.
Now on the #bluescsi. No way to make this thing to boot from it. I tried formatting the virtual disk from the 170 instead of creating from the pc. It formats but then while copying the files I have a lot of i/o errors. It seems like it bursts for some seconds and then hangs. The OS seems waiting a bit and then showing the error, maybe after a #scsi timeout...
Not sure how to troubleshoot this. The bluescsi log in the microSD doesn't show any error...

#retrocomputing #scsi #apple #laptop #motorola #mac #classicmac
#classicmac
Daniele Verducci 🧉
#retrocomputing question: I'm trying to boot my #macintosh #powerbook 170 from #floppy . So i used a #linux machine with #dd to write a known good #system7 disk image onto a known good #floppydisk .
But dd exits reporting an i/o error while writing. Note that I can create working #msdos floppy with the same drive and same floppy. Also tried other floppies, same error and every time at the same place (44kb from the start).
As expected, the mac won't boot, but for a little while I see the happy mac icon, so it seems the first part of the disk is correct.
Is there any mac-specific parameter to pass to dd? Any other hints?
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