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I carefully desoldered the ROM socket from my Quadra 700 motherboard and soldered it into my Quadra 650 motherboard. I also have a 2MB ROM SIMM module that I bought for my IIsi. It contains four M29F040-70 flash chips, so I can reprogram the chips ... I'm now looking for a patched ROM for my...

I buy a faulty Q650 Mainboard and Test it ... The error occurs in almost 90% of all programs started, including a Mac OS installer. There must be a hardware defect on the motherboard. The board is clean and looks flawless.

Looking for the Apple Macintosh Quadra 650 Schematics ...

Looking for a power supply connector (EU) from the motherboard, for example, on an IIsi, Q700, or Q650? I'd like to build a test power supply. Or what other connectors can I use?

I have a Miro Prisma II Plus, but I can't get it to work. I'm certain it's faulty. My NEC MultiSync 1970NX monitor supports sync-on-green, but I'm not getting any image. The graphics card should work with this monitor. I installed a composite sync to H/V sync converter on the graphics card, and...

Looking for some divers to the "BMAC PRII 001" Graphiccard. It has a INMOS IMSG300G-10C Transputer GPU Chip on it and 1MB of VRAM. The EPROM Sticker say "PRISMA II v3.1" ... There are some sites with MIRO driver on the Web but these are wrong for this card. I can not find something ...

The video output is faulty. I'm not sure if it's a hardware or software issue? If I play around with the control panel and change settings, then restart, it suddenly works fine. Then the next time I start it, it malfunctions again. Apple Quadra700 running at 32 MHz and GrandVimage control panel...

I have a Performa 475 with a full 68040 CPU at 33 MHz and 128 MB of memory. I want to install OS8, but the installer quits with an error message saying it's not possible on this machine. I've tried overclocking the computer to 25 MHz using software and changing the P475/Q605 jumper, but nothing...

I bought an Interware GrandVimage 24-19B Nubus graphics card for my Quadra 700 on eBay from Japan. The card has 3MB of video memory but only an 80MHz RAMDAC for 1024x768 at 16.7M colors max. Can I modify the card and convert it to a 24-21B by updating the ROM and possibly replacing the RAMDAC...

Is there a USB WiFi dongle that has a driver for a PPC G4 with OSX 10.4 or 10.5? My MacMini has no Airport Modul but it could be that this doesn't support normal WiFi anyway ...?

Macintosh Performa 475 with full 040 CPU and 128MB Ram and Mainboard set to 33Mhz CPU Clock and BlueSCSI I can not install a system 8, 7.6 or 7.5 from CD ROM or Floppy Image files, see the picture ...

I soldered in/replaced new tantalum capacitors instead of the normal capacitors. Since then, the computer has booted normally from a floppy disk or from BlueSCSI, but there is no video. The monitor shows a frequency that is too high, but everything remains black. I don't think it's a capacitor...

What about to change some Things onto the Mainboard see the picture ...? ... is it necessary? What happens if you don't do it?

I need help and tips. The SMD components on the performa 475 board are fixed and glued with some red glue. I want to replace components but that doesn't work even with hot air. How can I remove the red glue from components?

... my system is a Performa 475 with 128MB RAM and XC68040 CPU and BlueSCSI Desktop Version buying 2024 with two HD Images on it. HD0 with System 7.1 and then HD1 with System 7.6.1 The problem is when I use/mount the SD card with my modern macOS Computer (M4 MacMini) to add a CD image for...

What is unpleasant about my Performa 475 is that restarting or shutting down doesn't work under System 8.1. The computer basically freezes and the mouse still works. Under System 7.1 it works as it should, i.e. when it restarts it restarts and when it shuts down a restart message appears, which...

I want to use a BlueSCSI with Wifi in the P475. I try MacOS 8.1 but the Dayna SCSILINK installer do not work right with the german MacOS 8.1 I try german 7.5.3 but it also do not work (see picture) ... I have a Macintosh IIsi with this setup and System 7.1 and all works fine ... What System...

I bought a defective Performa 475 over eBay Germany. The previous owner unfortunately removed the onboard RAM completely and destroyed/broke the pads in the process. He also replaced the electrolytic capacitors I think and destroyed the pads in the process too. I removed the old solder from the...

I installed a German System 7.1 on a extra IIsi SCSI Harddrive and then created an image with Diskcopy from it. I copied the image to my MacMini with macOS and renamed it as an ISO and make a CD-R with BURN. This CD works well on my 68k IIsi but is not bootable! How can I make it bootable?

I find MacOS 8.0 as german and install it but all 8.1 I can find are PPC (iMac) images ... I need this for my Quadra700 Looking for a Link to it ?