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It worked for me. I assume it worked because it's the the same as connecting an external SCSI device with a terminator, which also solved my problem. Good to know that the 6th jumper position would also fix the issue as well, though.

I wish what you said were true, but I have the same problem with this particular drive, and it has Apple firmware.

I ran into the same problem with my identical IBM drive and my LC III. If you still haven't gotten your issue sorted, I'm about to try doing so. I'm going to be using a 25-to-50 pin external SCSI adapter in the back of my Mac, along with a 50 pin terminator like you'd find on the back of an...

After watching videos, I had assumed using flux was a given. When I buy an iron and solder, I'd also be buying flux. Thanks for the reminder, though.

Thank you. I really hope there's continuity, because as someone who's just about to learn soldering, I am definitely not prepared to run wires on the back of the board to replace the trace.

Yeah, about to buy that multimeter.

Would you say these traces under the batteries are shot?

I had honestly thought I'd be paying a lot more. And yes, the desire to learn soldering has always been present.

You make some excellent points. Thank you for the links. I suppose I'll be getting a multimeter, then. My issue is that I don't have experience with soldering not the money to get a decent iron. I came across this Mac II as a gift, or I definitely wouldn't have it to work on. I know retro...

Ooook, so I think for now I'm going to skip checking this power supply and go for a new one. You won't believe what just shook out of it: A plastic guitar pick. Not sure if it can cause a problem, but I'm not taking any chances. It might've rattled around for literal decades and broken any...

I was able to jumpstart it and get the arpeggio death chime, but then it suddenly switched off. No pop, no burning smell, no magic smoke, simply off. After that, no amount of jumpstarting the first pin of the power supply (white wire) will power the machine on. I checked and there are no scorch...

If that's the case, I sure hope it didn't take the board with it.

Unfortunately, now it won't even jumpstart. It shut off after playing the death chime again and now no matter how long I jump it, it remains silent.

I just got my Mac II to fire up, but now I need to diagnose it due to getting a death chime. The only Mac monitor I have supports a fixed rate of 832 x 624. The original Macintosh II Video Card installed has all VRAM sockets filled, so my understanding is that it supports 8-bit color at 640 x...

I strengthened the wires and held them to the pin and case for longer. It fired up but, sadly, I got a death chime. Now I just need to get a monitor to plug into it.

Yes. It's a PRAM battery I pulled from another working Mac, and I'm touching the positive to the white wire terminal and the negative to the case metal. I'll try to prolong contact once I get back home, and I'll also see if cleaning the contacts of the very dirty, very ancient Mac II power...

I'm attempting to test a Macintosh II that I'm about to begin working on. When I use my half double A battery to attempt a jumpstart by touching the end white wire pin and the case metal, all I get is a quick fan spin, a flicker, and the speaker making the usual popping sound when power is...

It really would be wonderful if System 7 worked on a New World ROM. Sad. It's my favorite OS, for sure.

OK. I'm leaving this up for anyone who makes the same mistake I made: Somehow, having the SCSI ID on the Rodime set to anything but 0 caused the drive to be mounted 6 more times. Not sure if it's a Rodime quirk or your typical SCSI voodoo, but if you have one of these drives, set yours to 0...

I just acquired a beautiful Rodime 20 Plus External hard drive with an RO652 disk drive, and for the most part, it works wonderfully. However, it has a strange quirk that neither the acts of reinstalling System 6 nor initializing the drive fix. Whenever I boot up, whether from floppy or hard...