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alexGS's latest activity
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alexGS
replied to the thread
PowerBook 500 Series Battery Rebuild Failure (Oops, all dead EMMs!)
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Not that it helps, but I received two batteries from the USA at long last, from a friend visiting me in NZ. These batteries came with...
Apr 15, 2024
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alexGS
replied to the thread
Macintosh PowerBook 145/160/170 battery replacement
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Oh - lol, absolutely agree - I didn’t mean a prefabricated holder, I meant to design spaces for the cells into the 3D-printed part, with...
Apr 15, 2024
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alexGS
replied to the thread
Macintosh PowerBook 145/160/170 battery replacement
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Ahh you beat me to it, I’ve been looking forward to trying that :D well done! Now we just have to design the battery holders within the...
Apr 14, 2024
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alexGS
replied to the thread
Color Classic II Mystic Upgrade with Rev D analog board issues
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Amazing - thanks for providing the link. Hard to believe the monitor/analog board was capable of handling an increased...
Feb 24, 2024
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alexGS
replied to the thread
Macintosh 128k/512k/Plus SW1 powerswitch drop-in replacement
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This is a really good idea - well done! :) Many of the original switches seem to have corroded contacts from battery leakage. I hadn’t...
Feb 22, 2024
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alexGS
replied to the thread
Macintosh 128k/512k/Plus battery socket drop-in replacement
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I’m in NZ and I’ve been working on something similar, I use 3D-printing to solve lots of problems like this. I made a battery for the...
Feb 22, 2024
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alexGS
replied to the thread
Macintosh Classic won't start
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Cheesestraws is absolutely right - I do the wash in hot soapy water (with dishwashing liquid) first, scrubbing with a toothbrush, and...
Feb 20, 2024
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alexGS
replied to the thread
Macintosh portable backlit m5126 floppy issue
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Yes - replacing the SWIM chip restored the correct operation of the floppy drive in the backlit Portable that I was working on :)
Feb 20, 2024
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alexGS
replied to the thread
Wide vertical bars on a Mac Plus - help, please
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I replaced the 6522 twice more, using chips taken from old 512K boards that don’t work for other reasons. I’ve installed a 40-pin socket...
Feb 16, 2024
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alexGS
replied to the thread
Macintosh Classic won't start
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Yep, and then replace the optocoupler again. Voltages will probably be back to normal - for a while. Cleaning the analog board in hot...
Feb 16, 2024
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alexGS
replied to the thread
Macintosh Classic won't start
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Good stuff. One thing to think about - when you replace the optocoupler - I think they are possible to damage with soldering...
Feb 10, 2024
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alexGS
replied to the thread
Macintosh Classic won't start
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So you heard a bang, but you’ve still got some voltage produced? Check the two 0.1uF capacitors that are wired across the AC input -...
Feb 10, 2024
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alexGS
replied to the thread
SE/30 Sound and Boot Freeze Issues
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It feels like if there was one cracked via (corroded via from capacitor leakage perhaps), then there’s probably another, this time from...
Feb 7, 2024
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alexGS
replied to the thread
Wide vertical bars on a Mac Plus - help, please
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I’ve now replaced the 6522 - which has changed the display to that below (please disregard the 512K Mac case/analog board used for...
Feb 7, 2024
A
alexGS
replied to the thread
400k Drive Repair Guide - A Call to Arms!!!!!!
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Luckily no-one commented on the filthy condition of the Mac 512K that I was working on - it’s finished now :) I treated the case with...
Feb 7, 2024
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