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Gotcha! I wasn't sure if I needed any special hardware to read the chip, but it's nice to know I don't. As for the separate ROM thing thats just my bad writing. The Two Page Display is the name given to both the video card and the display itself that was used. I don't own the display, so I'm...

Thanks! What kind of hardware would you recommend I use with SlotsDump?

Very interesting! I'm away from my apartment right now, but I wonder if this suggests that TPD and FPD cards are in fact compatible with ROMs from eachother. I don't have the tools to dump my ROMs, but if you could recommend some to me I'll gladly get those copied onto Macintosh Garden.

So I made a new harness that also uses the AUX power from the 4XDC TT design board and did some voltage tests. When reading the voltage directly off the 040 card at C37 of the PDS connector I was getting a solid 4.94v which would mean that the power is now totally fine. Unfortunately the issue...

Much appreciated! If I ever get a rom flashing tool, I'll gladly add this to the GW ROM as another option.

I'm not to sure if I can easily adjust the trim on the TTDesign PSU. At least I don't see anywhere to do that. But thankfully my Turbo 040 is the later revision with 4.11 firmware.

Disregard my last voltage check. I tested via the J12 connection on the logic board and here is what I got: Pin 6: -4.94 Pin 7: -11.92 Pin 12: 4.75 Pin 13: 4.75 Pin 14: 11.87 So pin 12 and 13 are out of spec and should be higher. My guess was this was due to my atx extension cable...

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...