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No I run the 040 CPU with 33Mhz ...

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

... it worked with a lot of solder and the soldering iron. I use the overclock software already but I want it fix in hardware.

I want to desolder two resistors. I applied flux and removed the solder from the pads on both sides of the resistor using a desoldering wick and then tried to remove the resistor using hot air at 400 degrees and tweezers, but that didn't work. I thought the red glue would soften, but that wasn't...

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...

I install System 8 from CD on a clean HDD Partition and update that to 8.1 ...

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...

Thanks ... It works, but with very large files the computer freezes and the 40MB file loaded via FTP, for example, has 0kB. With smaller files everything works fine. I was able to buy a PDS TP Ethernet card via the forum and I think I'm using that.

Yes, I use 7.1 and 7.5.3 with the Classic AppleTalk and now the SCSILINK Wifi works ...

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...

Quick and dirty fix... Unfortunately I don't have a microscope, just an LED magnifying glass. Trace on/at the VIA looking good but it isn't, there is a break. But I can't find the spots without a microscope.

Everything is there up to the vias in the picture near C127. From there to the SIMM socket, however, A1, A3, A4 and A6 are missing. @Bolle can you help with a picture of the paths?

DRAM Address to Simm ... A0,2,5,7,8,9,10,11 - ok A1,3,4,6 - no connected to RP9,10,11 ... I think it's due to defective vias between U5 and C127? The tracks are extremely thin and the vias are so small that you can't even put wire through them. I still have no idea how to fix it?

Begin to check the connections ... Rom <-> Ram D0-D3 Simm ok / U10 ok D16-D19 Simm ok / U6 ok D4-D7 Simm ok / U11 ok D20-D23 Simm ok / U7 ok D8-D11 Simm ok / U8 ok D24-D27 Simm ok / U4 ok D12-D15 Simm ok / U9 ok D28-D31 Simm ok / U5 ok ... next check A0 - A11 to the Ram.

I fix the broken connection on U8. It doesn't look good but is OK according to the tester. U11 has also a faulty pad. The error still exists. I suspect that the destroyed pad and the entire DRAM of bank A were not the original first problem. The missing 47uF C127 and C128 can't be the...

Thanks for help me ...

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...

Toast 4 works with System 7.1 ...

With Toast 2.56 there is no "File Menu -> Save as ..."