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Gotcha. That was my understanding too. I did a sanity check on the voltages via the HDD molex port with the new power supply and they seem fine. I'm getting 11.88v and 4.94v on boot.

I tried with a stock SE/30 ROM and got the same results as the IIsi mode on the GW ROM. But can I plug the 040 turbo directly into the PDS slot on the SE/30 logic board? I was concerned that I could fry it if I did that without an adapter like Bolles.

I've gone one item at a time and everything was working great until the accelerator was added. I haven't upgraded the wiring yet, but it is on my list to do. Could that be the problem and maybe cause the voltage to sag?

Howdy y'all. I feel like I'm beating my head against a wall, but maybe I'm missing a crucial step. I'm trying to get an SE/30 up and running with a DayStar Turbo 040 hanging off Bolles combo PDS card (using the correct accelerator slot and not the pass through), but try as I might I just get...

I’m working with a Mac SE that has a Radius SE Accelerator 16 installed. Connected to it via the MagicBus expansion slot is a Radius Two Page Display card—this is the version with the single BNC connector for monochrome video out. The ROMs on my TPD card are version 3.0, and as far as I can...

Just in case you end up wanting to revert the 512k to it's stock configuration, I've got some spare 512k roms from machine that I put a rominator into.

I can't help with probing, but when it comes to an extension cable I'm pretty sure the classic boards use the same kind as the SE and SE/30 which means you can use a 24pin ATX connector like what is used on modern motherboards. You just want to match the keying of the pins and let the extras...

Dead Mac Scrolls also pointed me in that direction. May as well get a parts list and start swapping to see what happens.

I've got an extra 512k analog board that I've been saving for a repair and I finally got to it today. I recapped it and reflowed all the connections, but I still get the same extremely distorted and flipped upside down video on the CRT. Check out the photo to see the stretched and upside-down...

The head seems to glide just fine along the shaft if I slide the head manually. The worm screw may be the issue, but a visual inspection doesn't show anything. The screw was also cleaned and relubed too. I did notice that since the head bounces up and down on the worm screw while it spins...

I've got a Sony OA-D34V-22 400k floppy drive that suffers from 2 big issues right now. One is that the drive refuses to eject anything. The motor is dead silent when I try, but thats secondary to my main issue with the read head of the drive. For some reason the head can't get past the...

Yeah I would double check all the major joints and reflow them. Glad it's a pretty simple fix!

Number one guess for the intermittent issues might be related to the caps if they haven't been replaced yet. I brought my 512k back from the dead by just replacing all the caps on the logic board and analog board. Regardless, it sounds like a power issue anyway. If caps aren't the problem...

One of the reasons I came to love retro computing was seeing how rapid things changed 30+ years ago. It's such a breath of fresh air learning about all the genuinely innovative feats of engineering that happened. Not to mention companies weren't afraid to make weird or bizarre products that...

I second this. Only 2 of my 12 machines actually have it.

I haven't found anything besides the tindie and Tinkerboy adapter. I was hunting for 3 sets of the keyboards and mice, and the best I was able to do was about $100 per set. Definitely sucks right now, but at least replacement cables aren't too expensive.

Very interesting stuff and I appreciate you sharring your work! When I saw that you make new socketed accelerators for the SE/30 coupled with recently learning about Bolles grayscale card, I got inspired by the possibility. I might give a 4 card set up a go and see what happens in the future...

Does anyone know if there's was ever a 68040 40MHz accelerator board made for the SE/30 like the PowerCache where the CPU was swapped for a new daughter board instead of using the PDS slot? I'm interested in seeing how many upgrades I can theoretically map out for an SE/30 and if I could move...

I don't remember the exact orientation, but it should be blowing away from the debris catcher that the fan sits.

Not really. Capacitors tend to slowly fail over time. The computer can still chug along just fine even as they are starting to leak. The biggest concern would be corrosion caused by the leaking capacitors, but a few weeks probably won't make a huge difference. The other possibility is the...