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Would someone be helpful and take a voltage reading with your O'scope for me? I need to know the voltage amplitude of the External Floppy Jack J6- pin 19 (Attachment refers), while formatting a floppy. My O'scope is reading 3.6vpp.  Thank you Rick

I’ve noticed that the MemoryX website has been down for the last month. Have they went out of business?

I’ve recapped my early version motherboard and replaced the PRAM battery. However I’m still seeing the loss of time, date and mouse settings when the classic is turned off. I have checked the battery voltage back to chip U12 pin 7, then to pin 12 on the EGRET chip. That path is good.   ...

Seeking some advice on how to download files larger than 1.4MB from the web (Mac Repository or Macintosh Garden).  I'm running into the 1.4MB "Floppy bottleneck". Meaning how do I get larger compressed files that won't fit on a floppy disk onto my Classic II hard drive? Thank you

Hello, Has anyone found a source for the 68 pin 256k VRAM SIMM apple p/n 661-0722? The SIMM is used to upgrade the video ram from 256k to 512k. Thank you, Rick

I recall from my Apple II days that several programs, or firmware allowed you to inspect the contents of memory. Does that capability exist for the Macintosh 68k family? thank you, Rick

Troubleshooting an SE/30 motherboard with an oscope is almost impossible with how short the power/signal cable is (J12). Has anyone tried making a longer cable for troubleshooting? This is the cable that connects the motherboard to the analog board. thank you, Rick

Hello, I want to upgrade the memory in my SE/30.  Has anyone purchased 16MB SIMMs from the company Memory(X) ? thanks Rick

I've designed a 3D printed SCSI2SD hard drive mount. It's different from other 3D printed mounts in that is utilizes threaded inserts for securing the PCB and attaching to the Mac chassis.  I've included several pics of the mount installed in my Classic II. I could produce and ship them for...

Hello, Looking for some repair advice. I have a Sony 2MB Floppy drive model MP-F75W-01G that will not read, write or initialize a disk.  I've disassembled it to clean and lubricate, however can't get it to function.  Is there a procedure for R/W head alignment, or something else I'm missing...

Hello everyone, I'm new to the Classic Mac refurbishment game.  I'm in need of schematics for the analog sweep board p/n 630-0525. It's the US 110V version.  Any help would be much appreciated! Rick