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  1. ktkm

    Quadra 950 -- system quirks & bus errors

    Hello, I have a Quadra 950, with a SCSI2SD version 6, set up for four SCSI HD devices at 2 GB each (ID 0, 1, 2 and 3). After installing A/UX on SCSI ID 1 using the partition map and the guidance from the A/UX Server Penelope, I have some trouble installing and using System 7.5.3 (only with Open...
  2. ktkm

    Another Quadra 900/950 CD-Bezel (Caddy Style!)

    I’ve been spending more time with my Quadra 950 recently. After successfully recapping and restoring an internal caddy-loaded 300 drive, I decided it was time to have a CD-equipped tower. But just as for many before me, the bezel-less front became an eyesore. So I decided to design my own. You...
  3. ktkm

    Flyback opinions wanted

    When I was trying to figure out a video problem in one of my SE/30, I noticed some cracks in the flyback (perhaps common failure these days?). As a result, the flyback gives a buzzing sound, and the glow coming from cracks pulsate synchronized to the screen distortion. The PSU is a new Stratos...
  4. ktkm

    Radius PrecisionColor Pivot 0356 take apart guide?

    Hello, Yesterday I got hold of a Radius PrecisionColor Pivot 0356. The monitor seems to be in working condition; however, the physical pivoting function is very stale. I thought I peek inside to see if I can clean and lubricate all the moving parts, but the problem is that I can’t find a...
  5. ktkm

    New 3D-printed parts (ktkm)

    A couple of weeks ago, I posted in the Trading Post, about wanting to buy new Nubus slot covers (and CD-Bezel kit), and @elbaroni gave me a clever suggestion to look for 3D-printable parts (https://hackaday.com/2019/01/19/unobtanium-bezels-finally-modeled-for-3d-printing/). But then one of my...
  6. ktkm

    Quadra 950 squeaking noise and distorted video

    I’m testing a Quadra 950 in the hope of adding it to my collection. But it makes a subtle squeaking noise (not from the speaker), and the internal video becomes distorted when it reads from the hard drive. If I push down the mouse button, for instance, to make a selection in the main menu in...
  7. ktkm

    JackHammer in IIfx no boost in perfomance

    I’m currently testing two identical JackHammer cards (3.2) to see in what condition they are. But I’m not sure if my set up is optimal. I thought an IIfx would be a decent candidate to test them with, but I’m not getting any increased performance (I get approximately 1,15 MB/sec R/W with a...
  8. ktkm

    Graphics card with weird red artefacts (SuperMac Spectrum Power•1152)

    SuperMac Spectrum Power•1152 graphics card with weird red artefacts (the HD icon labels) that appear after being connected to an AppleColor High-Resolution RGB Monitor for 5–10 min. (The card works great with an Apple Studio Display.) Sound familiar?
  9. ktkm

    SuperMac Spectrum 24 III ceramic capacitor?

    The video suddenly became raggedy and stripy in right edges of windows, menus, and other GUI elements (only when displaying millions of colours). Upon closer inspection, I found a blown ceramic capacitor on the back of the card. I thought I replace it, but I don‘t know the value, or where to...
  10. ktkm

    Asante MacCon daughterboard question

    Picked this daughterboard up, to use it with my MacCon IIsi/SE30 ethernet card, in the hope I could skip the use of a transceiver since my currently installed daughterboard only has thick and thin connections. Question is, are they compatible?
  11. ktkm

    II, IIx and IIfx bottom case interchangeable?

    Are the notchings on the bottom of the II, IIx and IIfx, that holds the motherboard, the same? /K
  12. ktkm

    NoStereo INIT

    I’m looking for an INIT that supposedly is called “NoStereo” and fixes some issues with the 601 turbo cache. Anyone here heard of it, tried it, or know where to find it?
  13. ktkm

    Portable 26-pin monitor cable broken

    The flaky and stripy video was a broken 26-pin LCD monitor cable. Has anyone had this problem, and how was it fixed? Where would you find this kind of cable today and what is it called?
  14. ktkm

    PSU light pipe Macintosh II, IIx and IIfx – image reference?

    I’m currently looking for a light pipe (the little optical plastic thing that let the light from the LED travel to the surface of the computer case) for a Macintosh IIfx. I have already posted in the trading section, but since I’m curious and I would like to tighten the odds on finding one...
  15. ktkm

    Macintosh IIfx with Thunder IV GX 1360 inside!

    I scored four NuBus cards in an IIfx, and one of them was the Thunder IV GX 1360!  The IIfx was sold as untested, and still, it works like a charm, even with the original 160 MB Seagate! Thank you @Bolle for helping me out identifying the cards!
  16. ktkm

    Help identifying IIfx Nubus Cards

    I bought an IIfx yesterday, probably none-working since the ad stated untested. What caught my interest was the Nubus cards, in this case, four of them. So far I have roughly identified three of them, I think, as one Ultra-wide SCSI controller card and two graphics card, but the fourth one was...
  17. ktkm

    Mac IIci PSU: Astec replacement film caps hard to find!?

    Hello! I having trouble finding the right film capacitor replacement for an IIci Astec PSU, especially the large 2.0 µF 250 VAC. My local supplier doesn’t have them, so I thought I use Mouser for this order or any other suggestion for that matter. This is the entire capacitor list (red shows...
  18. ktkm

    IIci behaves like a compact mac

    I’m having a problem with a motherboard that has have been recently re-capped. First thing, the IIci behaves like a compact mac when turning off. Second, the floppy drive is recognised as an 800K drive, it won’t boot, and can’t format disks. Sound only works through the headphone jack. SCSI...
  19. ktkm

    IIci PSU shrink-tube optional?

    I’m planning an IIcx/ci PSU re-cap. When I opened the PSU, I noticed that some of the capacitors have shrink-tube on them. Is this really a necessity?
  20. ktkm

    Help identifying Apple Monitor H-card components

    I recently had one of my Apple Color High-Resolution Monitor Video Color Board ‘B-board’ re-capped. One of the large capacitors  (22 µf 250 V ) had started to erode. The video was slightly improved, and the occasional shutting down issue seems to be gone. However, the H-board has a broken dial...