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Daniël Oosterhuis

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Everything posted by Daniël Oosterhuis

  1. Daniël Oosterhuis

    PowerPC overclocking and limitations

    Ehm, Imgur doesn't suck, it's a great place to upload photos to link on forums, you don't need to go to their site. The embedding problem is on 68kMLA's side, it won't embed any images regardless of source, nor will it succesfully upload images.
  2. Daniël Oosterhuis

    Daniël's Conquests

    Since I've started acquiring more and more 68k and PowerPC Macs, I suppose opening a personal conquests thread is appropriate Now, I've had a lot of good finds in the past, and I might make posts about them here, but I'll denote them as old finds as to not create any confusion Anyways, to kick off this thread, I'll talk about today's find, a Macintosh SE/30. Since it's late and I don't feel like setting the Mac up for a photoshoot, I'll just borrow the seller's photos: There is a catch however, this SE/30 is no longer working, therefore we agreed on the price of €30. The seller had suspected that the analog board had gone bad, as when turning on the Mac, no image would appear on the CRT at all. He also said it didn't chime, but he thought it was due to the speaker cable not being attached to the logic board. It had been a while since he last messed with the SE/30, so he couldn't remember a whole lot about it, he thought it was still running Linux 68k, and that he had replaced the PRAM battery at some point. Once I had picked it up and gotten back at home, I swapped the logic boards between the SE/30 and my SE, which I know is working as it should, and something interesting happened: The SE board booted up fine in the SE/30 chassis, and the CRT worked fine. The exact opposite happened to the SE/30 board in the SE chassis, it was doing exactly the same as it was doing in its own. Also, the chime never played, but this was no surprise as the speaker cable was attached to the SE/30 board when I took it apart. After looking around, I noticed that a trace had been eaten away, with copper sticking up. One end of the trace went to a pad, which in turn had a jumper wire soldered to it, which connected to a pin on the chip marked as UI6 on the board. The other end of the broken trace seemed to go to the Gate Logic Unit chip. After looking up the Apple part number for the UI6 chip, which was 341-0665-A, I found out that this is a PAL HSync chip. The schematics I found, if I'm reading those correctly, seemed to show that the jumper and trace connect pin 8 of said chip, which is for the FC0 line, to pin 29 of the GLU chip. I'm a little tired, so I could be wrong on that, but I am fairly certain this is correct. It would make sense for the SE/30 to fail to display a video signal or even boot if a data line for the HSync of the video signal is missing, and the Mac could potentially also have bad caps, worsening any symptoms this could have already caused. I'm not very good at soldering beyond simple components, but with some patience I should be able to double check my suspicions, and resolder that jumper wire straight to the corresponding pin on the GLU, bypassing the broken trace. That, along with a board cleaning and a recap job, should get this SE/30 back on the road. I also found out that the SE/30 has been fitted with a 100MB IBM SCSI drive, and four 4MB RAM SIMMS, totalling the system RAM to 16MB.
  3. Daniël Oosterhuis

    Daniël's Conquests

    EDIT: 68kMLA decided to not actually embed the pictures despite showing them in the editor. Click on the JPG names to open them in a new tab! Dusting this thread off, given I found something Mac related again. The thrift shop I go to nearly weekly, posted a picture of their computer and A/V section recently, with a PowerMac G3 B&W sitting amongst the PC towers. Went over the next day (which was yesterday), and it was still there, untested for €20. Other than being pretty dirty, it looked in good shape, no cracks in the plastics, etc. Gave it a lookover, it has a RAM config of 1x512MB, 2x256MB, and 1x128MB, totalling up to 896MB usable as the PMG3 treats 512MB DIMMs as 256MB. It had two HDDs, presumably the original 12GB Apple branded Quantum Fireball, as well as an Apple branded 4GB WD Caviar 24300, presumably ripped out of some older Mac. It also had an Avid audio workstation card, but more importantly, it actually has a Sonnet Encore G4 upgrade! The 500MHz, 1MB Cache version to be exact. Although this is a nice bonus, it's kind of a bummer because I'd like to have it as a G3, so I have a PowerMac of every "G". Maybe some day I'll find the 1.1GHz PowerLogix card, so I have the fastest G3, fastest (stock) G4, and fastest G5.
  4. Daniël Oosterhuis

    Recapping accident on Macintosh Classic :-(

    Generally, any nearby ground would work. However, if you want to do it neatly, I'd suggest giving this video a full watch, and seeing if any of the suggested methods of dealing with ripped pads apply to your case:
  5. Daniël Oosterhuis

    2011 iMac

    Alienware MXM GTX770M cards also work, albeit you lose bootscreens and EFI. But, in return, you do get Metal support for Mojave.
  6. Daniël Oosterhuis

    Macintosh IIfx Capacitor list

    The IIfx uses mostly tantalum capacitors. These do not need replacing unless they are faulty, they don't leak unlike the electrolytic caps used in other Macs of that era. The only electrolytic capacitors will be the through hole eletrolytics, and maybe a few SMD style electrolytics, which should have all the values on them if you wish to replace those.
  7. That's probably flux. Should be decently cleanable with isopropyl alcohol, but it is indeed a sign of poor manufacturing standards. Sending it back for a replacement might be the safest option if you're willing to wait with whatever project you're using this for, though.
  8. Daniël Oosterhuis

    Wrong capacitors for SE/30?!

    I've decided to recap my SE/30 today. I used tantalum capacitors, namely these for the 10x 47uF, 16V caps, and this for the single 1uF, 50V capacitor (holding off on the axials until I have a proper desolder gun, and I think the axials don't really leak much anyways). Well, after doing it with my servicable solder skills, and ensuring everything was on solidly and all the markings were on the right side (making sure the positive side lines up with the marking on the caps as tants are marked for +), I flipped the switch and got a nasty surprise... C10 went up in flames, falling off the board. Fortunately, it seems to not have damaged anything beyond some left over soot... But why did this happen? I made sure to check the positive side... Are the caps for some reason not the right ones and I didn't see it? Unfortunate faulty cap? Something wonky going on with the SE/30? Honestly, if I do replace C10 with an electrolytic, I'm still rather nervous to try turning it on again...
  9. Daniël Oosterhuis

    Wrong capacitors for SE/30?!

    Slow boat caps came in, replaced the exploded one, and... We got a chime, but no video. It death chime looped at first, but reseating ROM and RAM got it to at least chime. Probably UE8 on the fritz again, like my previous SE/30. The board did have a bit of blue funk, I guess corrosion, on it. I got some off the board "fingers" (those big contacts at the front of the board), with good scrubbing, but if anyone has a good solution for it, especially in the SIMM slots, please let me know.
  10. Daniël Oosterhuis

    Macintosh SE with S-video instead of ADB cable won't boot

    It's not the cable. ADB and S-Video cables are wired up exactly the same. Maybe the SCSI Hard Drive's gone bad? Have you tried booting from floppy? Make sure the floppy drive is lubricated before you use it, chances are high you will destroy the eject mechanism gears otherwise!
  11. Daniël Oosterhuis

    Wrong capacitors for SE/30?!

    Yep, I had the system on its side, after the capacitor lit on fire, it just fell off. Thankfully by the point it was falling to the floor it already stopped burning, but at least it wasn't falling on carpet in case it did... Anyways, I ordered some 25V caps, will have to wait for those to arrive. Do any other caps deal with 12V? I'd like to replace those with 25Vs too. I think none of the 16V caps dealing with 5V will fail quite as horrifically as that one.
  12. Daniël Oosterhuis

    Classic II + FPU = A/UX?

    Something that I've been thinking about recently, given I'm trying to piece together my Classic II again, just waiting for a new logic board to swap in, is making an FPU card for the Classic II once I have it all up and running again. It would truly make the Classic II a "Mac SE/30 Lite", as @bunnspecial likes to call the CII. However, as you might know, A/UX, Apple's first true foray into a UNIX based operating system before they broke down and just gobbled up NeXT for the better, only runs on the SE/30 when it comes to the Compact Mac range... However, with an FPU, wouldn't the Classic II technically meet A/UX's needs? With the 68030 and its MMU, the FPU add-on, and sufficient RAM, could it possibly be doable? I know A/UX would be difficult to get to work on wildly incompatible hardware due to the kernel drivers, but the Classic II from my understanding seems architecturally close enough, unless its 16-bit bus throws a wrench into it. I've looked around on Google, but other than a few pages just saying the Classic II won't work without a mention of the FPU upgrade scenario, I've come up with a blank. So, am I just crazy or is the Classic II once fitted with an FPU potentially capable of being the second A/UX capable Mac in the Compact Mac lineage?
  13. Daniël Oosterhuis

    Wrong capacitors for SE/30?!

    Given I stupidly only bought ten, I didn't have any more to check with. I stuck back on an electrolytic it originally came with, given it chimed and was audibly booting with those still installed (just no video), but it's not doing anything anymore. At least none of the other caps went up in flames. Checked them, they are all correctly installed. I'm 99% sure C10 was also installed correctly as its neighbours were, and I vividly remember checking it and seeing they were all pointing the same direction, stripe at the + on the board. Just hoping it didn't take out something else in its wake, will have to order some more caps (25V this time), and re-check the board.
  14. Daniël Oosterhuis

    Classic II + FPU = A/UX?

    Heh, usefulness is really not the aim for it. More of a bragging rights thing, just to have something to show off the FPU upgrade with I wouldn't want to imagine running said UNIX/Linux operating systems for more than 10 minutes poking around with some commands anyway! I'll definitely look into that when building it, shouldn't be too terribly difficult to add I suppose. And, again, more bragging rights to have a Classic II that actually outshines the SE/30 in something, even if it's minor in the large scheme of things
  15. Daniël Oosterhuis

    Classic II + FPU = A/UX?

    Yeah, as I started reading more about the EAGLE chip, the more I started to fear it'd be the killer. I guess if someone wants to crack their coding muscles at making A/UX run on the LCII and LCIII, it could also be used as the basis for getting to a CII+FPU version. That is far above my skillset. Heck, the only reason I'm considering the FPU Card upgrade is the fact that it's dead simple to make, given all that goes into an FPU card for the Classic II is the FPU itself (add a socket for ease), a few filter caps and the 50 pin connector. One could easily fabricate a FPU card on a piece of prototyping board, with a 50 pin header and 50 pin SCSI cable to connect it to the Classic II. It's just that the FPU isn't a huge upgrade under the Mac operating system as far as I know. I do wonder if there are any other UNIX or even Linux based operating systems requiring a FPU that would work on a CII once the card is installed.
  16. Daniël Oosterhuis

    Classic II + FPU = A/UX?

    The thread linked compares the SE/30 and Color Classic II, not the "regular" Classic II. As for the ASICs, one is the Combo chip, also used in the IIsi which as far as I know is A/UX compatbile, another being the EAGLE chip that's customary to the Classic II. That is so far the only real roadblock I can see, depending if the Eagle has backwards compatibility or not.
  17. Daniël Oosterhuis

    Whats the best way to clean a mac classic logic board?

    If you haven't soldered much or at all, I highly, highly recommend practicing on unimportant stuff before cracking into your Mac. I had a lot of "fun" fixing up one of my SE/30s that I jumped in on way too quick and messed things up on. It works, but it could have been much more neater if I didn't overestimate myself!
  18. Daniël Oosterhuis

    SE/30 - What card could this be?

    So I saw an SE/30 for sale locally, and something got me quite, quite curious. It appears to have some sort of PDS card, but it has a single DSUB connector, seemingly the E size of DSUB. The picture is pretty poor, so I can't tell how many pins this connector has. Also, it seems like there's a PCB right behind it. Anyone ever seen anything like it?
  19. Daniël Oosterhuis

    SE/30 - What card could this be?

    I'll look at putting it into my working SE/30 and using Tattletech on it, and making some high res pictures, once I have the time and energy to do that. As for the Ethernet idea, certain devices to bridge Token Ring with Ethernet did exist, but finding them would probably be nigh-impossible. I've been told a lot about Token Ring since I got it, and yeah, generally the consensus is that this PDS card is not much more than a novelty. Finding equipment to set up a whole Token Ring network is difficult and probably not worth the money either. I didn't buy the SE/30 on the grounds of it having some rare special card, and went in with the idea of it not being anything special, so I'm not too disappointed. At the end, it's just a cool restoration project to give my working SE/30 a sibling
  20. Daniël Oosterhuis

    Macintosh Portable Video Adapter

    There is a Datashow Premiere on eBay, not sure if it's a model that supports Macintosh Portable. Maybe someone could tell by the cables?
  21. Daniël Oosterhuis

    Question about retrobrighting a Color Classic

    I haven't heard of retrobright affecting the printed text on plastics such as on the Macs and on keyboards. I don't think you should worry about that, try it on a more inconspicuous location first if you're still nervous about it, to see if it has such an effect.
  22. Daniël Oosterhuis

    LCD screen in a Color Classic

    What an ugly, ugly mod. The Trinitrons in these systems are great, no need to ruin that with crappy LCDs. I don't think any modern tech, high quality panels are made in 4:3 anymore anyways.
  23. Daniël Oosterhuis

    SE/30 - What card could this be?

    Well, I have picked up this Macintosh SE/30 today. Seller said it wasn't working, he turned it on and it was just Death Chime looping. I picked it up for €55, to accompany my other SE/30. At home, I pulled it apart, finding out that it is in fact not a video card of any kind, but a "h-three Systems Corporation" card with a whole bunch of TI chips. Looking at datasheets of said TI chips, this appears to be a Token Ring NIC. I wonder if this can be adapted to a modern Ethernet network. As for the SE/30 itself, I pulled four 2-chip Texas Instruments RAM SIMMs of unknown capacity out, leaving four 1MB SIMMs with Motorola chips in, it will chime now, but no video. I noticed some corrosion on the edge connector (or whatever it is, it looks like that) under the ROM SIMM, although it hasn't spread, so it should be easy to clean off. A few traces have brown crud on them, a few near the tiny audio capacitor, and a few near C13. C13 also cleanly fell off while handling the boards, leaving the pads intact thankfully. I'm going to assume these capacitors are just truly toast. Maybe UE8 is bad on this one as well, but I've managed to fix that on my other SE/30, so not too worried about that. At least the battery didn't leak at all! Time to order some caps I think
  24. Daniël Oosterhuis

    Restoring my first se/30

    Or 80 pin SCA drives, as long as they support the 8 bit "narrow" bus mode. Drives supporting this should have a jumper setting for it. And going above 7200RPM isn't recommended. 10k and higher RPM drives get hot and are loud.
  25. Daniël Oosterhuis

    Rusty Macintosh SE/30

    Really bad caps can leak enough to stop the Mac from working again within 24 hours. YouTuber AkBKukU had a Macintosh Classic II that worked for less than 24 hours after cleaning the board from cap leak residue, it worked fine after another clean and a recap job.