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Ah, interesting!

Congrats!

Did you try the 470 ohm resistor on the /req line like I mentioned in the other thread. I assume your active terminator was on the external scsi port, that didn‘t help me.

Check out this thread and see if it helps. https://68kmla.org/bb/index.php?threads/se-30-yet-another-scsi-issue.49949/

Looking for ribbon cables for a spare passive and a spare active LCD panel I have, both sharps. I did receive two of those CCFL tubes and wiring connectors. But I've put the complete systems back together already with replaced clips from other lids I had. Once I find new ribbon cables, I'll...

No, for the 500 series PowerBooks, it's purely mechanical with no magnets. Just a spring and latch.

Glad to see it's working for you. I can look into sharing the code when I get a chance.

Replaced the front facing cover panel (the one with the latch) with another, and it works fine. The latch mechanism itself seems to be the same, nothing broken or missing. But it looks like the hook itself may have deformed on the ones that aren't locking. They are bent backwards slightly...

I have three working PowerBook 500 series now. PowerBook 540c with PowerPC CPU Card and 32MB memory module, 320MB HD, Hosiden LCD (Active) PowerBook 540c with Full 68040 (w/FPU) overclocked to 40MHz and 32MB memory module, 160MB HD, Sharp LCD (Active) PowerBook 520c with 8MB memory module...

The center clutch cover on the PowerBook Duos is listed as a disposable part that should be replaced when the PowerBook Duo is serviced. This is because the little clips on it break off easily when removing it. Unfortunately for us, these are no longer made. I have a few with broken clips. Time...

Decided against it as I didn't want to shove another board in there right now. Considered designing a new inverter board altogether with only LED support (CFFL bits removed) but would require me to spend some time to learn more first (future exercise). I have two of the tubes on the way. Let's...

I've got a broken CCFL tube for a 540c. I took the measurements of both the working one (from a Sharp LCD), another working one (from a Toshiba LCD), and my busted one (from a Hosiden LCD), and they all seem to be the same size. 3mm diameter and 218mm length (for just the tube -- not including...

@3lectr1cPPC, got some pictures of the PowerBook Duo 2300c for your site. Note that for the logic board, you list one 33uf 25V. There could be up to two of them. I think I saw some boards with tantalums for these which wouldn't require replacing. But mine had two electrolytic caps. The rest of...

Possible.

I cut two of them open, they are dry. Tightly packed roll/layers of black stuff inside, but dry.

I've been working on piecing together 4 more 5xx series PowerBooks from various working/not-working machines I picked up a couple weeks ago. Three of them are working but for the fourth, it's a little flaky booting and I noticed the speaker was crackling non-stop after power on. I did smell...

If it didn't come with one, a cache card noticeable improves performance. That said, I still only run 7.1 on my 68030 based machines because 7.5.5 is just too slow for me on these machines. I run 7.6.1 on my 68040s.

Ooooh... got in for the edit before the edit option disappeared :) haha..

I probably should not have, but I picked up a PowerBook 540c (dead), a PowerBook 520c (working), a PowerBook 520c (dead), a PowerBook Duo 2300c (working)... I did get a PowerPC card (working) with one of them. My room is currently littered with PowerBook parts.. Working Systems PowerBook 540c...

Depending on which LCD you have, the Sharp one has a bunch of caps that need to be replaced.