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  1. M

    Reverse engineering the LC II Logicboard

    I finally managed to get a board assembled enough to test: I didn't really expect it to work, after all V1.0 boards rarely work out of the box however I flicked the switch and was extremely surprised to hear a clear chime! But I was getting a solid white screen.... The I realised I hadn't...
  2. M

    Reverse Engineering the Macintosh LC Logicboard

    Board layout files, as well the the KiCad files for the schematic are now available :) https://github.com/max234252/MacLC-Reloaded These are provided under a non-commercial license however if you provide repair services and want to provide these boards (Or want to use them for any other...
  3. M

    Reverse Engineering the Macintosh LC Logicboard

    And we have schematics! I have literally just finished drawing these and have not extensively checked over them so there will likely be errors (If you do find any let me know and I'll fix them :) )
  4. M

    Mac Classic ROM chip - replacement or more troubleshooting? SOLVED

    Yeah I can ship to the US, shipping from the UK is expensive though (would likely be around £10-15.....) so if one can be found locally that might be better cost wise! I just had a flick through @Mac84's video and the 27C400 is indeed the correct EPROM
  5. M

    Mac Classic ROM chip - replacement or more troubleshooting? SOLVED

    Where in the world are you? AFAIK the correct EPROM is a 27C400, they aren't hard to find but you'll likley only be able to get them from china, the real difficulty is the common EPROM programmer (the TL866) dose not support these out the box and you need to get a programming adapter. I have...
  6. M

    Reverse engineering the LC II Logicboard

    PCB's are finally here! :)
  7. M

    Formac G3 ZIF carrier - Repair

    I've been there! I have a full 5k reel of 4k7 0603's because I needed about 4 once :) Sure! :)
  8. M

    Reverse Engineering the Macintosh LC Logicboard

    So the LC board currently has no schematics available, I thought it's about time that changes! This is going to take ages.... I have got used to how easy it is to work in sprint, going back to using KiCad is kind of painful. That single simple page took a few hours to draw (And I just noticed I...
  9. M

    Got myself a couple of prime, museum quality specimens here 😂 [ATTACH]

    Got myself a couple of prime, museum quality specimens here 😂
  10. M

    cc333's Short Intro

    Hey @cc333 great to see you here :) So, onto the classic II now then? :)
  11. M

    Reverse Engineering the Macintosh LC Logicboard

    Whoops, forgot that one...... :) However, I can now post a picture of a fully assembled V1.2 board: The good news is that it works just fine! No patch wires and no weird NVRAM issues :)
  12. M

    Formac G3 ZIF carrier - Repair

    This is the one I got: https://www.ebay.co.uk/itm/401906276099 It's pretty much the cheapest stereo microscope with a boom arm amscope sells but I have been very happy with it so far
  13. M

    Formac G3 ZIF carrier - Repair

    Your always welcome to send it my way, those TSSOP48 parts are no match for my microscope and FX-951 :)
  14. M

    Please help - I think I just blew my SCSI chip on my SE/30

    Schematics for the SE/30 are available here: https://museo.freaknet.org/gallery/apple/stuff/mac/andreas.kann/schemat.html There is a modernized version somewhere that is easier to read but I don't know if the top of my head where you cam find them
  15. M

    What is the best technique to remove SMD ICs ?

    You'll have no problem removeing chips at 360C unless you linger with the hot air for a really really long time, I have been known to use 450C before and haven't killed a chip yet! (450C will easily damage older boards though so I wouldn't recommend it!)
  16. M

    Reverse engineering the LC II Logicboard

    Top and bottom copper are done! Next is the inner planes which are always fun.... might have to get the sander out for that :)
  17. M

    Reverse Engineering the Macintosh LC III Logicboard

    It's been a while since I last posted about this but work has been ongoing, testing of the board revealed one serial port did not work, this was tracked down to a missing trace coming out of one of the 26LS30's, patching this fixed the issue A V1.1 board has been produced with fixes for all the...
  18. M

    Taking a break form working on my reverse engineered LC's, by building one of Kai's Classic...

    Taking a break form working on my reverse engineered LC's, by building one of Kai's Classic reloaded boards instead! :)
  19. M

    53C80 Experiment

    Are there any random parts you don't have? :ROFLMAO:
  20. M

    Reverse engineering the LC II Logicboard

    With the (hopefully) final revision of the LC 1 board and the second revision of the LC III both with JLCPCB for manufacture it;s time to turn my attention to the LCII. This was initially going to be the second board LC board I worked on before that pesky LCIII board distracted me... The boards...