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I have removed the shield from the top PCB - easier to see everything.

Yes, the motor starts spinning as soon as power is supplied.

Just looking to unlock the knowledge of the forum - I have a Panasonic JU-475-5 floppy disk that's broken - The spindle motor just constantly spins. The heads seek on bootup - but again, the motor never stops spinning and DOS reports drive not ready. All the jumpers are configured correctly...

I noticed with my own server that the communication between the Nabu and the PC is much less stable (CRC checksum errors, Nabu Re-Requesting files) when running the ROM 29 vs the original 4k rom that came on the machine - it does eventually load though. The fact that the only difference is the...

Ok, I'd love to know what I did wrong then because I cloned the repo, built - but I just get keyboard failure and adaptor failure.

The version of MS-DOS 2.11 that shipped with this computer is an OEM modified version which has support for the RTC built in, there are no external devices loaded. - I have found by playing around that if I call the setclk.com right after I read the clock with readclk, the value in the RTC is...

I know clock.sys works with the leading edge model D that I have, and that's good with dos 5, but this M doesn't have that nor is that file present on the boot disk. I'm using the original MS-DOS 2.11 disk that came with the machine, and with that disk, the clock works fine. Nothing else seems...

Thanks for that link Chuck, I gave it a shot. I don't understand what's going on at this point. When using the original MS-DOS 2.11 disk, setting the date and time works as I would expect - across power offs and reboots. These tools actually look like they work but the clock becomes...

Hi Larry. I have those tools, they do not work on my M.

Before I dig into the technical documentation and attempt this myself, does anybody have a tool that can read/set the RTC in the Leading Edge Model M? I'm running DOS 5.0 on the machine now so I can have a larger hard disk with the XTIDE but have lost access to the clock. I know it still works...

Thanks everybody, this has now gone to a new home. -Huw

Everex 386 full size AT case w/ power supply. This thing is large, and heavy. No shipping, pick up only in the Redmond, WA area. PM only if you're going to actually come and get it. -Huw

Every time I restart this computer, the bios shows the CMOS Checksum invalid error and loads the bios defaults. It doesn't matter if I save settings, exit, and reboot, it still gives the same error. The RTC actually is keeping the time though. I've cleared the CMOS following the instructions...

The odds are not in my favor, but somebody may have some broken leading edge computers that they are keeping for spares somewhere. I am looking for the small white plastic reset button switch cover and spring for the D series of computers. I picked up a broken D2 that I'm repurposing but it's...

Are there any good troubleshooting steps for the Model F Keyboard's electronics? I've been given one with unknown history that appears to be broken. I've disassembled it to deal with corrosion on the top and bottom plates and right now, i've got the bare pcb on the bench. I've plugged it into...

I picked up a Leading Edge Model D2, but of course it's missing it's keyboard. Anybody have any leads on a DC-3014?

I'm going through all of my old PC's and fixing them up - it's something to do - Anyway - it's now the Model D's Turn. I've got a Leading Edge Model D Rev 2011E with Phoenix Rom Bios 3.0. Like with the Model M that I have, I am upgrading this computer with a VGA adapter so I can use it on the...

I'm fixing up my families old Leading Edge Model M. I've had to clean up some battery leakage as well as replace a few chips, but the system is now booting just fine. The issue that I have come across is that I can't seem to get the computer to boot with any EGA or VGA cards. The selection of...