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Don't trust the external jumper block on the enclosure to set SCSI ID, disconnect this and set the SCSI ID on the drive itself to say ID 2 or 3 to be safe. You can also self-terminate the drives without need for the block style external terminator. Usually easy to find the jumper settings...

@evanboonie such nice research, thanks for posting it up. Hoping to explore my P100 card soon and will try a 133Mhz overclock as initial test. How did you desolder the CPU, was this a relatively easy job with the right tools or manage to become tricky?

Not sure if you're serious, but give it some time? There are some pretty amazing new developments in all aspects of vintage computing but nobody is in a hurry.

No, if NOS check for bent pins and any corrosion, the 25Mhz parts should run fine at 33Mhz, while the 33Mhz probably hit the wall with varying success @ 40Mhz.

I'm going in to do same with an SE/30 with jumpy/jittery video (all other avenues exhausted), do you think the BU406D you bought was just a better quality version? I've a pack of ?? unknown BU406 and reckon they might be super cheap.

Think it’s Apple Portrait to Apple Nubus video card with Portrait monitor connector

Hi Gerry, I think you need to break down your Mac issues into digestible portions - you’ve a combination of hardware, software, networking issues and more. Could I suggest making each Mac functional standalone before networking and trying unsupported software. Mac OS 9.2.2 is only really...

Nice one! If a really old SCSI drive you might be able to lubricate the bearing not from inside but outside the bottom of the drive - might be visible

Welcome MontanaMac, I've had many early SCSI HDs die hard after years of inactivity (even if they were good for a short moment). Often they can't come back but search for the HD model and you might find a fix as luRaichu noted usually requiring you to open the enclosure and tape back, remove...

The ISA slots are a nice inclusion but fitting anything in there is quite the design flaw! I'd look out for a ISA riser card from a 386, 486 slimline case (with 90 degree slots) that allows you to fit a card in upside down, so to speak. Other option would be a really low profile network or...

Hi Snial, Up next I'd try the patched version of Mac OS 9.2.2 that enables booting on unsupported Macs. Try booting the CD image from a FW drive as an alternative. JB

That's a lot of bloody caps

That's awesome, thanks for designing and sharing. A job I'm not looking forward to one day, so far my TAM sub works fine without issue.

I'd have a look around for the machine-specific eMac OS 9.2.1/2 installer media, along with reset PRAM/NVRAM and maybe an Open Firmware patch to trick the CPU speed as a last resort.

The tape looks quite freshly applied; if old and cloth it'd be either dried up leaving dry marks peeled up or super tacky depending storage - what do you think?

Is this the one? The heatsink threw me off, agree it's not great design and the CoolerMaster fan isn't stock. Replace the fan if going back into your QS as its pretty crappy...

... yes (doesn't it already have 16MB but gone bad?)? It would be the sweet spot as 4 x 16MB (64MB) might not be fully cacheable on this 386/early 486 design. 30pin 4 x 4MB kits would be readily available in your region, maybe even new

I reckon the ImageWriter is worth keeping if you have a matching computer, as you can still get the ribbons and they're as rugged as a cockroach. StyleWriter II will be all gummed up and probably not work. Apple Scanner is cool too if working well.

No onboard RAM if the error keeps coming 4 x 4MB would be nice. Love how yours has an ISA slot! Thanks for video. Yep mine same low-res DOS full screen is terrible but Windows better than you'd think. Still planning on trying the card in various Macs, video subsystems to see if can improve...

I've got a slimline fan on mine too (Sonnet L2 G3 400Mhz @ 500Mhz), not like it's roasting hot but temps do jump up fairly quickly under load.