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More progress....more weirdness. Looking a bit deeper at the original vs the copy generated by DiskDup. It seems that a good chunk of the data made it from disk to disk. However there are byte errors throughout. Although these errors appear in blocks of 4 bytes. In each instance value that's...

Progress report for anyone experiencing similar issues. Attempted to use DiskDup to image a disk which it claims is a sector level copy. Taking the same image on a PC using DD. Compared the MD5s of the images, which match. So reading doesn't seem to be an issue. Attempted to have DiskDup write...

Hi All, I've been working on resurrecting an SE/30 with some minor battery leakage damage. Re-capped and fixed a few address lines near the RTC. It now passes all the tests in snooper, lots of RAM cycles passed etc. Boots fine from a ZuluSCSI. I've been using it for several hours and it...

Update for any future intrepid travellers. I've somehow managed to fix it. The SWIM and ADB chips were looking pretty crusty, with lots of corrosion on their legs and a small amount showing on the tops of vias surrounding them. I suspected more broken traces, so tried cleaning the board with...

Progress update I discovered AppleCAT SE/30. Sheepishly connected my working SE/30 to the dead one. Started the tests. Communication established. ROM / RAM / address / data bus tests all pass. PRAM test results in a chime of death and loss of comms with the test machine. No activity on the...

I've got an SE/30 which started with the same symptoms, horizontal stripes, no booting, death chime. It's had a minor battery leak in the past, which a previous owner has cleared up. I followed @techknight advice and found a few address lines that the battery acid had got around some of the...

Nice one @mg.man ! Did you happen to take a before picture showing the corruption? Could be useful for others to see what failed address lines look like compared to other problems :)

Thanks for the reply @elemenoh . Have dropped @mg.man a message. I hadn't got as far as considering shipping yet 🙈, may be good to get a little strategic reserve of case screws in the UK at some point.

@elemenoh Have you got any of these awesome looking screw sets left? I just got hold of three SE/30's in need of some TLC and all without screws 🙈.

Solved my issue for the moment. On the SE/30, for me at least formatting with Apple HD SC Setup (either patched or unpatched) leads to a driver partition that doesn't seem to like the ZuluSCSI. Formatting with Lido however works perfectly. I dropped it onto a 6.0.8 Disk Tools image with the...

I'm the Mac SE/30 guy ;) - Have opened a discussion as suggested on Github: https://github.com/ZuluSCSI/ZuluSCSI-firmware/discussions/11 Thanks again, Phil

@rabbitholecomputing Just added a ZuluSCSI to the SE/30 I'm restoring but having a few issues. Updated firmware to 1.0.2 and confirmed in the log file. Dropped a blank 64MB HD0.img onto the SD card. Drive is detected and with SW1 set I can initialise the disk using Disk Tools without any...

I didn't, although saw it suggested somewhere online in a "so the video stopped working after you changed the RAM" sort of situation. If the video RAM didn't have the correct image in I'd have tried swapping it out for some spares. Thanks for the input though! Its really encouraging to see that...

Howdy neighbour :-P It's a Saleae Logic. They're a bit on the pricey side for hobby use unfortunately, but they're very good. That one's generally doing mundane snooping on SPI and I2C busses at work. Here's yesterday's operating theatre.

@Johnnya101 and @mg.man thanks both for your input. It seems UE8 is a parallel to serial shift register....another couple of pins on the logic analyser started to make it look pretty suspicious. The parallel loads on the input didn't match the serial stream on the output. Took it off as you...

Hi All, I've recently joined the classic mac owners club, with three fixer upper SE/30's in various states of decay. Having selected the best logic board of the three, with no leaking caps or exploded battery. I've cleaned and recapped it. Not yet recapped the analog board or PSU but have...