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  1. desertrout

    So, I bought a portable…

    That's my understanding as well - not so much that the higher amperage damages chips, but that over time Q16 will burn itself open allowing 6V+ and worse (i.e. 7.8V) through to the PMGR etc. instead of the regulated 5.2V... but how exactly the mosfet fails in this circumstance is unclear to me.
  2. desertrout

    So, I bought a portable…

    One my 'favourite' moments from Computer Chronicles is when the guy from Apple is demonstrating this very feature, forgets to put the battery cover back on, and the machine shuts off. Then he can't turn it back on again to continue the demo because the power manager needs to be reset... he...
  3. desertrout

    So, I bought a portable…

    LOL yeah sorry I guess there's still debate on this in the sense there's still debate about anthropogenic climate change... the actual experts overwhelmingly agree, but you still find folks out there who don't. At least I still see lots of comments online (not here) that using a 1xx adapter is...
  4. desertrout

    So, I bought a portable…

    Well, technically and historically it's true - people did (and still do) use 1xx adapters with Portables as an 'unauthorized workaround'... But I agree a caveat could be added here, noting that the machine was not designed to run from an AC adapter (rather the adapter was designed to charge the...
  5. desertrout

    Macintosh Portable Feet Remake

    There's an STL for the flat ones here: https://www.thingiverse.com/thing:2547630 I suppose this one could be altered for the 90deg ones?
  6. desertrout

    Powerbook 145b repair attempt needs help

    Where / how did you order the cable? After replying earlier, I popped over to Digikey to see what kinds of assemblies they had but couldn't find anything with the four-row through-hole end... would love to know!
  7. desertrout

    Powerbook 145b repair attempt needs help

    Oh man, I feel you on this... sometimes things just roll downhill with a vicious momentum. I did something similar with the keyboard flat cable for a Toshiba T4600c - cleaning off conductive paint thinking it was oxidation - then stupidly thought I could tin the cable instead but just melted in...
  8. desertrout

    Mac Portable battery charger tray

    You don't necessarily need to own one... you may have a makerspace near you that will provide access to a printer, or in some areas there are printer shops... or on online outfit like JLCPCB offers printing services. Lots of options
  9. desertrout

    Powerbook 100 happiness

    This is totally a tangent, but it's funny to me that at VCF this year there was a talk on 1xx series PB collecting and both speakers recommended avoiding 100's because the caps are leaky and other usual issues, but man I couldn't disagree more. I love these weird little dudes, and mine is one...
  10. desertrout

    Powerbook 100 happiness

    Nice! With every PB100 saved, John Sculley lives an extra week.
  11. desertrout

    Mac Plus not booting from Blue SCSI

    OK then!
  12. desertrout

    Mac Plus not booting from Blue SCSI

    I can't speak with direct experience, but I've heard some folks having luck with this by formatting the image with Lido EDIT: Apparently not
  13. desertrout

    Apple //c won't boot

    Nice. Fujinet is ESP32 based
  14. desertrout

    Apple //c won't boot

    Actually - just saw this, should be available soon to DIY:
  15. desertrout

    Apple //c won't boot

    Nice. ADTPro with the IIc works great (easy to make a serial cable, just need floppies) - but they're also great emulators now, Floppy Emu, Fujinet, wDrive...
  16. desertrout

    Apple //c won't boot

    Hey that's great!! Congrats! Be sure to run some diagnostics to put the RAM etc through its paces and make sure everything is cool. The XPS one is pretty good: https://mirrors.apple2.org.za/ftp.apple.asimov.net/images/disk_utils/diagnostics/XPS Diagnostic IIe 1.0.5.dsk This one is the dealer...
  17. desertrout

    G3 BMT dumpster rescue

    I'm the eternal optimist... destined to be disappointed.
  18. desertrout

    G3 BMT dumpster rescue

    Nice! I'm surprised these finds are still happening... someone in another thread just found a Portable in case on the side of the road... maybe we're entering a new phase!?
  19. desertrout

    Apple //c won't boot

    And - I'm kind of joking but also not - if they're MT branded chips, just do a complete swap out (with sockets)
  20. desertrout

    Apple //c won't boot

    Well... assuming your CPU, MON, MMU, and IOU are all good, that only leaves the RAM afaik. Do you know which ROM version it has? Can you attempt the self diagnostic? When you replaced MRD7, did it have any effect?
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