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powermac g4 mdd

  1. Dt990

    MDD FW800 PSU replacement: No picture.

    In my quest to build out OS 9 bootable powerhouse, I learned why these machines were called the wind tunnel. I wanted to make this thing quiet and looked into the ATX power supply conversions. I watched Action Retro's Ultimate PowerMac G4 (time stamped to the part where he replaces the PSU) and...
    • Dt990
    • Thread
    • fw800 power supply powermac g4 mdd
    • Replies: 12
    • Forum: PowerPC Macs
  2. S

    Dual 1.25 Powers On But Does Not Boot

    I recently got a Dual 1.25 MDD off of eBay which describes as a restoration project. The system powers on but no chime. After about 10 seconds, the fans go full blast. I've done the following: - Replaced PRAM battery - Reset PMU - Reseat video card, RAM, and power supply connector to...
    • sethkj
    • Thread
    • fans high no chime powermac g4 mdd psu
    • Replies: 5
    • Forum: PowerPC Macs
  3. S

    Put DP 1.25 CPU in a Single 1.25 PowerMac G4 MDD?

    I aquired two PowerMac G4 MDD recently: 1.25 DP FW800 PowerMac G4 - (does not post or boot) Model 1914 1.25 Single FW400 PowerMac G4 - MDD 2003 Model (does work and boot) Model 1914C Since I don't know what's wrong with the DP 1.25 G4 - could I put the 1.25 DP card in the FW400 2003 machine...
  4. Giuanniello

    My MDD G4 won't switch on :-(

    I wanted to resurrect my old dual G4 MDD to use a same old scanner in need of a SCSI board which I had installed in the MDD, unfortunately by pressing the switch button I only get a blink off the in button white led and that's it, dunno if power supply is gone or if there is any fuse or other...
  5. asdfguy86

    PowerMac G4 MDD GPU Issue?

    Hi all! My PowerMac G4 has been giving me a strange issue lately, and because of what it does I'm going to guess it's the fault of the graphics card. When I turn it on, it will make the chimes sound, the fans will turn on (not at full speed), the hard drive will start seeking like it normally...
    • asdfguy86
    • Thread
    • ati radeon 9000 gpu gpu problem graphics card powermac powermac g4 powermac g4 gpu powermac g4 mdd powerpc powerpc troubleshooting
    • Replies: 18
    • Forum: PowerPC Macs
  6. asdfguy86

    PCI USB Card Compatibility Question

    Hello everyone. It's been a (very long) while since I've logged onto MacRumors, but I have a question regarding a PCI USB card. I have a PCI USB 2.0 card that is made by NEC and has an NEC chipset in it, and I was wondering will it or should it work in a Power Mac G4 MDD model? Everywhere I...
    • asdfguy86
    • Thread
    • mdd g4 mdd powermac nec pci card pci usb card pci usb card mac os powermac powermac g4 powermac g4 mdd powerpc ppc g5
    • Replies: 7
    • Forum: PowerPC Macs
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