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Old 22nd June 2017, 2:54 PM   #5401
shane41
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Originally Posted by Sciby View Post
image

I cleaned out a bunch of stuff from a coworkers shed. I came away with a dual P166 server, a dual P3 slot 1 server, a whole bunch of random parts and so on (including about 80 sticks of 72pin DIMMs).. and a lot of dust in the servers.
Nice.
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There is a group of us that get incredibly erect over such hardware. Maybe post in the retro section?
Haha ...........might be a bit rude that picture.
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Old 22nd June 2017, 3:09 PM   #5402
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4) Source a 1.5Ghz mainboard and get the laptop running
5) Source a 1.66Ghz mainboard from a 15" and attempt to move the 1.66Ghz CPU + north bridge and memory controller to the current 1.33Ghz board. If that fails (which I am assuming it will), move the 512MB onboard memory to the 1.5Ghz board.
Replacing the motherboard on a 12" Powerbook is something you might regret starting - it really is a painful exercise, and considerably more complex than fixing up other laptops. Reflowing the CPU/northbridge is another bag of hurt and you might have better luck researching PLL/multiplier settings to overclock the 1.33Ghz CPU to 1.5 - 1.6Ghz. Keep in mind also that some G4 desktops/PowerBooks have a chipset limitation on RAM sizes. Also remember the G4 CPU is starved for bandwidth so overclocking doesn't really result in significantly better real world performance. A new SSD would be your best bet to boost performance, initially.

The best place I've found for info on PowerBook overclocking is Mac Bidoulle French forums:

http://forum.macbidouille.com/

JB

Last edited by bYrd; 22nd June 2017 at 3:12 PM.
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Old 22nd June 2017, 3:42 PM   #5403
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Agreed, I'd personally wouldn't bother putting all those extra investments into the Powerbook. Just max out the ram, throw in an SSD (bandwidth limited) and change the battery cells.
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Old 22nd June 2017, 6:38 PM   #5404
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Seriously, even when almost 10 years old, they're still great. I bought an MBP in 2007 (which still runs), and as spares, I've had a few 2008 models given to me for parts. They all still work fairly well, even better with an SSD onboard.
The PowerBook keyboard is a step above the MacBook keyboards. They're amazing. 2006 keyboards were definitely a downgrade.

As for swapping 12" mainboards, been there, done that. I bought an 867Mhz jigger brand new back in the day. It ended up as a 1.25 before I sold it!

It's all jumpered onboard for timings and such, running a 1.66 on a 1.33 board will effectively underclock the 1.66. It's all just experimentation, I don't expect it to work.
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Old Yesterday, 10:05 AM   #5405
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I'm feeling quite pleased with myself today after discovering the existence of ‘speaker output’ to ‘line output’ converters. I’m in the process of setting up my nerd station in our new home office and was umming and ahhing about including my circa 1993 Sharp all-in-one sound system, which I found NIB a little while back:





The issue I was having was a) the wife-eyebrow-raising size of the thing, and b) it sounded like arse. But it occurred to me that I had it sitting next to my main PC’s 2.1 speaker setup, which sounds brilliant, so I could kill 2 birds with one stone by ditching the provided speakers and using the 2.1’s (which happened to have an AUX input on the sub). The only challenge was the lack of output on the Sharp, but Jaycar came to the rescue with this thingo for 15 bucks:

https://www.jaycar.com.au/speaker-hi...erter/p/AA0482

I’m no audiophile but it sounds fantastic to my ears – my 2.1’s are way too heavy on the bass by default but the Sharp has an equalizer so that was easy fixed.
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Old Yesterday, 12:41 PM   #5406
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This was my retro activity for the week: http://www.twingalaxies.com/showthre...00-Evan-Weston
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Old Yesterday, 10:31 PM   #5407
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Default Vic20 restoration

It is finished!!

From THIS.


To THIS




I failed in one regard: the "Shift lock" key movement could not be salvaged. The operation (to repair the torn contact) was successful but the patient died (membrane switch shorted out). There are two other shift keys, so I've let that one slide for now. I actually suspect it was shorted out already, as the flyleads to it had already been cut.
The keyboard repair sunk most of my time. In the end 10 PCB tracks were torn by (presumably) student violence and bridged/repaired, and another 8 vias had to be made to repair damage done by previous ignorant, ham fisted repair. The movement is now buttery smooth and contacts reliable (took 3 goes to get the conductive rubber contacts %100)

The below keyboard test made me most pleased.



Now for a bit of COSMIC AVENGER!


So I have a museum piece, daily driver and a spare in my VIC20 collection. I think that's probably enough, now.

Callan
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