PowerBook Repair Series: Trackball Repairs & Battery Door Removal

JDW

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I acquired my first 68K PowerBooks this year (2026), starting with the 180c and 165c. These machines aren't as bad as the LC500 series which fall apart during delivery, but they are pretty bad when it comes to broken stand-offs. Battery leakage is another issue. Then we have Trackball issues, drive issues, LCD, issues and the list goes on.

The following video is my first installment in what I want to be a PowerBook repair series covering major issues.


Thanks to @Ron's Computer Videos for his advice!

#MARCHintosh
 

eric

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I really dislike how Apple did SCSI in these powerbooks - the pins on the back of that SCSI ribbon cable sit so close to the metal cage of that just "pressure fits" the HDD. I personally would put some tape or something to protect the back of that ribbon cable. Even if you are able to fix those standoffs I just don't trust the design much.

Interested to see how you fix the screens - I've been lucky and not had one yet.
 
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JDW

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@eric
Here are photos of the BlueSCSIv2 PowerBook Edition sold by @jcm being installed in my PowerBook 165c for a first test...

HDD_PB165c_ExtraPins.jpg HDD-BlueSCSI_PB165c_ExtraPins.jpg

PB165c_BlueSCSI-installed.jpg

The spinning platter HDD has extra pins not offered by the BlueSCSI.
What are those extra pins used for, do you know?
 

eric

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IIRC they are 5/12v rails and maybe an ID select? A quick search this morning I couldn't find the pinout but thats my recollection.
 
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JDW

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Even if you are able to fix those standoffs...
I just released a video showing the first 1/3rd of my STANDOFF REPAIR using J-B Weld Plastic Bonder epoxy...



...I just don't trust the design much.
Neither do I. There is just too much weight inside that aging case. Sadly, there is no MacEffects plastic replacement case available (at least, not yet), so we either leave the plastics broken, or seek to repair them. Using the machine in a broken state only lends itself to further breakage, and the broken pieces may shatter ever smaller or be lost altogether. If you watch my video, you will see that I reassemble a fair amount of the original broken standoff pieces in order to ensure the same HEIGHT for the female brass parts as it was when it was new.

It's a lot of work to repair the standoffs, and there was a huge amount of time spent by me off camera scraping and gashing the plastic so the epoxy would stick well. Honestly, it would be VERY WORTH IT to have a replacement plastic case for the PowerBook 140, 160, 170 and 180 series machines. So much time could be saved, and you'd get another 30 years of life from it too -- perhaps more if Polycarbonate was used (like the Mac Portable) instead of ABS. Yeah, it would cost a lot, but whoever said this hobby is for cheapskates? 😅
 
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larsovef

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Great video, I watched it yesterday.
I am in process of repairing a pretty clean PB180 myself .
There are some broken standoffs that needs repair and I was wondering if you (or anyone else) have considered using the 3d-printed replacement standoffs available on thingiverse? I am considering using these for my repair

edit: image of standoff
IMG_3199.jpeg
 
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JDW

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I was wondering if you (or anyone else) have considered using the 3d-printed replacement standoffs available on thingiverse?
Thank you for your kind words. But in answer to your question, I’ve never thought about 3-D printed standoffs simply because I’m not sure how they would work, and because I’m on my iPhone right now I’m unable to view your video.
 

larsovef

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Thank you for your kind words. But in answer to your question, I’ve never thought about 3-D printed standoffs simply because I’m not sure how they would work, and because I’m on my iPhone right now I’m unable to view your video.
Sorry, I see that the image I uploaded was a webp-file. Here is a link to the mentioned standoff.
You’re supposed to sand down the broken standoff and glue it in place. Then take your soldering iron and melt the brass thread in place.
 
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JDW

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Thank you for the link. That leads to the small version standoff. He mentions it is only one in a series of standoffs, but I’m afraid I can’t find any of the other 3D printable standoffs from him that would be required. On the very bottom case alone you have tall and small ones like that.

One mistake I he made on that page is saying that the teeth should be up because I know from firsthand experience the teeth on those brass inserts should be facing down.

He also mentions that you must insert the brass piece with a soldering iron, but he didn’t mention recommended soldering iron temperatures for specific PLA versions used. I suppose you could wing it, but it would be nice to know an exact temperature.

He mentions Loctite as the brand for his recommended epoxy to attach the 3-D printed standoff to the base plastic. He is not alone in recommending that epoxy, but very sadly, I could not buy it here in Japan. And that’s why I went with JB Weld Plastic Bonder. So I really have no idea how the Loctite compares.

It would’ve been nice if he would have posted a photo of one of his standoffs with the epoxy applied. I’m curious how he recommends using the epoxy with his standoffs. If you watch my video, you’ll see that I make lots of cuts and gashes in the base plastic and standoff pieces to ensure that the epoxy sticks strongly to both, and his page makes no mention whatsoever about cuts and gashes in the plastic for a better bond.

With that said, 3-D printable standoffs are not an option for me because I don’t have a 3-D printer and I use JLC3DP for my 3-D printing needs. Tragically, JLC refuse to print tiny models like that. There’s so much I would’ve liked to have printed through the years, but JLC just won’t print small items. So even if I wanted to show those standoffs in another video, I have no means to do so.
 
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larsovef

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Thank you for the link. That leads to the small version standoff. He mentions it is only one in a series of standoffs, but I’m afraid I can’t find any of the other 3D printable standoffs from him that would be required. On the very bottom case alone you have tall and small ones like that.

One mistake I he made on that page is saying that the teeth should be up because I know from firsthand experience the teeth on those brass inserts should be facing down.

He also mentions that you must insert the brass piece with a soldering iron, but he didn’t mention recommended soldering iron temperatures for specific PLA versions used. I suppose you could wing it, but it would be nice to know an exact temperature.

He mentions Loctite as the brand for his recommended epoxy to attach the 3-D printed standoff to the base plastic. He is not alone in recommending that epoxy, but very sadly, I could not buy it here in Japan. And that’s why I went with JB Weld Plastic Bonder. So I really have no idea how the Loctite compares.

It would’ve been nice if he would have posted a photo of one of his standoffs with the epoxy applied. I’m curious how he recommends using the epoxy with his standoffs. If you watch my video, you’ll see that I make lots of cuts and gashes in the base plastic and standoff pieces to ensure that the epoxy sticks strongly to both, and his page makes no mention whatsoever about cuts and gashes in the plastic for a better bond.

With that said, 3-D printable standoffs are not an option for me because I don’t have a 3-D printer and I use JLC3DP for my 3-D printing needs. Tragically, JLC refuse to print tiny models like that. There’s so much I would’ve liked to have printed through the years, but JLC just won’t print small items. So even if I wanted to show those standoffs in another video, I have no means to do
Yes, I am trying to patch together information from different forum posts across different forums. There are some good info on this tinkerdifferent thread:
And also in the 68kmla thread that is linked to in that thread as well.

I will use your method to repair the standoffs that are cracked but not broken. That will hopefully save some time. Looking forward to the next video in this series!
 
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