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  1. Garrett

    Identifying and confirming fake 68040 CPUs (especially the L88M mask)

    Thank you for the information! To be honest I haven't tested the processor yet, but if I understand correctly, it would show up as 25MHz in my Q700 and 33MHz in my LC575? Who knows if it even has an FPU! I wish we had a tool to determine "rated" speed. I suppose heat output could be used to...
  2. Garrett

    Identifying and confirming fake 68040 CPUs (especially the L88M mask)

    I recently bought one of these chips from an eBay seller out of China as an "experiment" I guess you could say. I took a couple of photos from my microscope to show some differences between a known genuine XC versus this questionable MC chip. I scrubbed the top of the MC chip with IPA, and none...
  3. Garrett

    Mac Classic No Drive Troubleshooting

    If the hard drive is known good and has been tested in your working SE, I would think it's still a power issue (especially if you hear the drive losing speed). Your SCSI chip could be defective as well, but I don't know how likely that is. Do you have any external SCSI drives you could test the...
  4. Garrett

    Post your desk!

    Here's my "lab" space for WIP type stuff. My wife is very understanding of this hobby and allows my mess in this room of the house, but I have to admit sometimes I've been guilty of spilling out into other rooms!
  5. Garrett

    MacBook Pro 15" 2012, shuts down randomly, or black screen on startup

    The U8900 fix (when properly executed) works wonders on video issues for the 2012/early 2013 15" retina. However, you appear to have a A1286 model. To my knowledge these did not have the same issues as the thin retina machines from that era. As was mentioned, the 2011 models had actual GPU...
  6. Garrett

    BlueSCSI - Open, Low Cost, DIY SCSI to SD device

    Is there an updated BOM anywhere for the 1.1 DB25 or desktop? I see this, but I don't think it reflects the latest hardware revision.
  7. Garrett

    "Platinum" PLA for Macs and Apple ][s

    I can already imagine the many uses people could get from a filament that's the correct color. OEM looking "Mystic" I/O covers, new badges, feet, etc. I wonder what the costs would be to create a "PowerBook Gray" version as well. I have bought gray filament in the past only to realize it looks...
  8. Garrett

    PowerBook 1400 Series CD-ROM Module Repair

    I'm wondering if Teac (who manufactured the drive) also designed that bezel, or if that was an Apple part which was mated to the 3rd party CD drive. I think a 3D printed reinforcement bracket seems like a very good option! So far the superglue has worked to hold the eject latch together, but...
  9. Garrett

    iBook G3 is the teardown from Hell - stripped screw

    At this point drilling it out may be your only option. Once the case is off there may be enough of the threads exposed to grip it with pliers and totally remove it. I feel your pain having dealt with a stripped brass standoff inside a case very recently!
  10. Garrett

    Low-cost 3 MB RAM card for Macintosh Classic

    I hate to disappoint, but I am not the legend behind "Garrett's Workshop"... we just share the same name with the same spelling!
  11. Garrett

    PowerBook 1400 Series CD-ROM Module Repair

    I did some disassembly this evening and found the culprit. The latch responsible for closure and eject was cracked in half. I am going to try superglue as a first stab at it, but if that doesn't work I'll model something to 3D print. After the glue dries overnight, I'll post some results!
  12. Garrett

    Low-cost 3 MB RAM card for Macintosh Classic

    My $0.02 - the OEM expansion card was much taller and heavier than what you've designed, and likely needed the rails on the chassis for support due to the torque that could have potentially been exerted on the motherboard connector. With your design I wouldn't be concerned with utilization of...
  13. Garrett

    PowerBook 1400 Series CD-ROM Module Repair

    I have a CD-ROM expansion module with a strange issue. It will only read discs if I hold the mechanism in place and press into the laptop. If I release, the disc spins down and unmount from the OS. Ejecting also only works if I release my hold on the door right as I hear the click of the latch...
  14. Garrett

    PowerBook 1400cs

    Nice looking 1400! There are actually two different logic board revisions, and you'll have to look at your ROM chips to see which one you have. I ran into a similar situation where the only option was to swap the entire board. From what I remember it was a pain to remove from the chassis, but...