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  1. elemenoh

    PowerMac 9600 with XLR8 MACh Speed card won't boot / gets hot

    After a little digging the card seems to be their "Universal adapter for installing Standard Power Macintosh G3 ZIF upgrades into PCI PowerMacs" If the processor itself is toast I guess it's just a matter of finding another G3 processor to toss into the ZIF socket?
  2. elemenoh

    PowerMac 9600 with XLR8 MACh Speed card won't boot / gets hot

    I have a 9600 with an XLR8 MACh Speed processor card. It's unclear what speed or generation chip is installed. The Mac gets power (LED lights) but no chime. After a few minutes the processor card gets extremely hot. 5v/12v rails are okay.  I don't have another card handy to swap test. Is this...
  3. elemenoh

    Color Classic floppy needs a rebuild- gears?

    @mraroid FWIW, the gears on the CC drives I serviced were fine and they were able to be cleaned and greased like other older SuperDrives without issue. It would be nice to get a replacement gear design for that revision of the drive for the future though.
  4. elemenoh

    Color Classic floppy needs a rebuild- gears?

    Is there a guide to servicing manual-inject drives somewhere?
  5. elemenoh

    Color Classic floppy needs a rebuild- gears?

    I have a bunch of gears from shpaeways which work great in all the older drives. I recently serviced several color classic drives and found that they do not fit! The color classic gear hole/shaft is a bit smaller and has a different number of teeth so the replacement gear just wobbles around and...
  6. elemenoh

    Question mark over checkerboard pattern on SE

    This is a regular SE board in a SE/30 case. Yes it works fine with the jumper off and 4MB RAM installed. It doesn't work with the jumper on and 2.5MB RAM installed.
  7. elemenoh

    When to give up on a 1.44MB floppy drive

    Update on the problem drive: First, I'm a dummy and was using a 1.44MB "Superdrive" on an older SE MLB that didn't support it. So at best I'd have been able to only format as double density. I switched out to an SE/30 MLB for testing. I was originally testing with a disk that had worked fine...
  8. elemenoh

    Macintosh SE/30 Schematics (modernization effort)

    Cool please do. I have no idea how that stuff is supposed to be organized :)  
  9. elemenoh

    Macintosh SE/30 Schematics (modernization effort)

    To whomever works on the modern PCB, It'd be rad to have it use a 2032 cell holder by default. I retrofit my boards with them but they're a very different size from the ½AA so not mechanically attached very well.
  10. elemenoh

    Macintosh SE/30 Schematics (modernization effort)

    https://github.com/mishimasensei/macse30mlb
  11. elemenoh

    When to give up on a 1.44MB floppy drive

    I've been trying to restore a floppy drive from an SE. The usual stuff like cleaning, replacing grease and replacing the bad eject gear went fine. It would still not read or format disks. I've tried adjusting the track 0 sensor and stator motor across their range, but haven't seen any...
  12. elemenoh

    Question mark over checkerboard pattern on SE

    All 256kb and all 1MB configs work okay but not 2.5MB. It’s filled with and working okay with 4MB at the moment but it’d be good to know why 2.5 is not. Maybe a bad resistor somewhere?
  13. elemenoh

    Question mark over checkerboard pattern on SE

    After reading through this article, it looks like the jumper should not be set for 2.5MB which this machine has. I'll try again with a different set of RAM to see if it's just bad SIMMS or something broken on the MLB.
  14. elemenoh

    Question mark over checkerboard pattern on SE

    If I jump the left two pins, it does boot but only recognizes 512K RAM. If I jump the right two pins, I get the checkerboard pattern. I tried a different set of RAM and got the same result.
  15. elemenoh

    Question mark over checkerboard pattern on SE

    This SE has a flashing question mark *on top of* a checkerboard pattern on an SE. The MLB looks like it was reworked, maybe to support different RAM configs? I tried removing each set of RAM and swapping them around. Any config other than both installed results in various sad Mac codes. Any...
  16. elemenoh

    Attempting to recap my LC III and may have run into a problem

    https://macintoshgarden.org/apps/setdate-rob-braun-avoid-year-2020-bug-in-system-6-7-8
  17. elemenoh

    Attempting to recap my LC III and may have run into a problem

    Hm, that looks like 682 to me which would be 6.8k. There seem to be a bunch on digikey. You'd just need to narrow down to the right package size...
  18. elemenoh

    Macintosh SE/30 Schematics (modernization effort)

    @Trash80toHP_Mini The KiCAD files are also posted. Please feel free to make one mega sheet with them!
  19. elemenoh

    Macintosh SE/30 Schematics (modernization effort)

    @Trash80toHP_MiniThere should be a single file version in the folder called "Macintosh SE/30 Schematic Redraw of 050-0253-01 May-25-2020.pdf" https://drive.google.com/drive/folders/1a29ekZRdQKhGU77sb_dueorzq3sbFU0k?usp=sharing Please let me know if you don't see it there.
  20. elemenoh

    Need help desoldering SE/30 RAM SIMM connectors

    @trag the sockets are all still in place due to solder that won't come out of the ground pin connections. I'll give Chip Quick a shot. Thanks for all of the tips everyone!
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