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  2. EvilCapitalist

    Se30 - help identifying an expansion board

    The lettering is a little worn but that's a Nutmeg 30/8, which if I'm not mistaken gives you 256 colors on an external display. There's one thread I could find in a quick search on here that touches on its grayscale cousin, the 30/2:
  3. Today
  4. bibilit

    SE/30 can't recognize SCSI HDD

    Yes it is. Nothing obvious from you pictures. I will try to connect your hard drives to a working unit (The SE or LC for instance) and do a proper universal installation first (the system file will show a finder picture on it, so a bootable system) Once this done and with a good known Hard drive in hands, i will follow the schematics and check for broken traces, this a long process, been there several times, but as Bolle said before, capacitors can wreak havoc to traces.
  5. upusen

    SE/30 can't recognize SCSI HDD

    Thank you for reply! I'm not sure this is a SCSI chip...
  6. Yes, your own list is huge. I keep a notebook with everything I do. Very helpful to have your own reference!
  7. BadGoldEagle

    SE/30 can't recognize SCSI HDD

    Given that you've tested many known good units (correctly terminated I assume since you're using them with other macs), I'm afraid the problem must be coming from the SE/30 board. Can you please post pictures of the top and bottom area around the SCSI chip?
  8. What LaPorta said, plus the following: - Have a high wattage iron on hand (50W+). Optional but very desirable (Oh I wish I had brought mine with me!): Desoldering Station. - It's particularly difficult to remove the big snap on capacitors. There's apparently only two on the 660. The 900/950 have four. - Be patient. Cold joints can happen very easily. - Have the correct solder type. All my joints look frosted. They're functional but it's never too good. I don't know what the blend was in the 90s. I think I have 60/40 and that wasn't it. - Don't rely on preexisting lists (I learned that the hard way when I ordered caps for Armoralley's TDK LC PSUs). Have a pen, paper and ruler ready and make your own list. - Good luck. Don't feel scared of breaking it. The Delta PSU in the 900/950 is really a pain to work on (soldered on daughterboard and epoxyed on caps.) I've never seen anything like it. Back the the current matter: I have no idea how the original Soft Power circuitry works. Is it on the power supply or is it on the logic board? I'd say the latter so theoretically the key mechanism is handled by the LB, right? So the signal goes from the key to the LB and the white wire just carries the information given by the logic board to the PSU? The transistor added for the ATX mod is only there to 'convert' the signal (i.e. ground it) for the ATX PSU to interpret it correctly, right?
  9. upusen

    SE/30 can't recognize SCSI HDD

    Thank you for reply! I used seagate HD (originally installed Macintosh LC. I don't know is this working correctly) Maxtor HD (originally installed accelerated Mac SE and it worked before 2 month ago) Apple's official 40MB HD (I don't know is this working correctly) all HDs are can heard spin noises. Is there problems are possibility to solve by using SD2SCSI or something?
  10. Bolle

    SE/30 can't recognize SCSI HDD

    Depending on how bad the caps leaked I'd say broken traces around the SCSI controller. Happens all the time and is easy to spot and fix. Grab the schematics and check all traces between the SCSI chip and the internal SCSI connector. Also check all the other signals that go from the SCSI chip to somewhere else on the board.
  11. robrsd

    Classic II capacitor kits?

    I have finally placed my order of caps, after ordering I noticed some of the logic board caps are described as follows: Aluminium Electrolytic Capacitors - SMD Aluminium Electrolytic Capacitors - SMD 16V 47uf 20% Audio-SMT The Audio bit concerns me, will these be ok? The Analog caps are all 'Aluminium Electrolytic, Radial Leaded' is this correct?
  12. bibilit

    SE/30 can't recognize SCSI HDD

    Hi, Are you sure those hard drives are working units ? the fact your hd is detected doesn't mean it works (i have a lot of detected units that doesn't work) If Lido throws an error, either the HD is bad or a terminator issue is present. another issue is having the HD not properly formatted to Macintosh OS. What brand are your HDs ?
  13. Hi everyone. I'm not English speaker so maybe I can't tell about some problems nicely. sorry about it. Few days ago I bought Macintosh SE/30 with no HDD. it looked some leaking capacitors on the motherboard, so I remove capacitors and then clean the motherboard with dishwasher and dry it out and then recapped. Then boot up SE/30, it looked boot up nicely. She can boot up from internal FDD and external FDD(Floppy Emu). When turn on the power, internal HDD looks spin up and can see blinking access LED. But can't boot up from HDD and can't see from Finder. I try format HDD on some third party formatter software but they can't format. They looks recognize the HDD but can't do any functions. When try check SCSI devices on Lido 7, it says "OSErr= 5 bad scsi command: phase error." on SCSI ID 0. and Pmount shows 0MB Drive on SCSI ID 0. This also happens another 3 HDDs I have. What I can do for fix this problem? Thanks IMG_0614.HEIC
  14. Byte Knight

    Compact Mac Server

    Almost 100 B&W Mac games on the server now! I also added an Apple IIgs folder after finally figuring out how to connect up my IIgs with Uthernet II card via AFPBridge.
  15. The part that makes the re-cap or PSUs like that so challenging is that the caps you order really need to be the same size. Getting squat, fat caps in there obviously won't work, so the diameter is crucial. Take the diameter of them before ordering. Otherwise, it's not hard. Just do one at a time and before you know it, you are finished.
  16. Sounds like you’ve been through the wringer with your power supply. I am getting ready to recap the power supply in my Quadra 660AV. No problems with it so far but I’d like to keep it that way. It looks daunting with so many caps so close together. Any tips? (I’m also going to do the motherboard but that doesn’t look as daunting).
  17. Yesterday
  18. Hey guys I currently have a PowerBook sat gathering dust down the side of my desk, it needs a recap but more importantly it suffers with tunnel vision. Which is why I don’t use it, I would really like to, but after 2-3 hours typing, the corners of the screen have blackened by an inch inward towards the centre of the screen. As there isn’t a fix for this issue (Yet!), I was wondering if there were any of the 1xx series of laptops that didn’t suffer from the dreaded letter boxing. Cheers!
  19. Thanks Gorgonops! Sit rep: Finishing the recap and redoing/cleaning all the solder joints didn't fix it. It's arcing now (for a brisk moment when it gets connected to mains power), so I'm nervous every time I'm near it when it's plugged in. This cannot go on, I've invested too much time on this PSU. So I've decided to tackle this repair by swapping the innards with that of an ATX power supply using @GeekDot's guide. That way it'll never break down again. I have a couple of questions before I 'pull the plug' on this PSU. Perhaps @GeekDot is better placed to answer these? - Is the key mechanism fully working with your small Soft Power circuit? (i.e. 'off' is off, 'on' is soft power and 'locked' is auto power on with the keyboard/mouse input disabled) - Did you have time to create a molex adapter board? I honestly can live without them (SCSI2SD is bus powered), but it'd be nice to have a fully working PSU. In case you haven't, I'll start working on one after it the Quadra gets fixed. I'm thinking about getting a Corsair VX450, but it only has 3 Molex plugs. Are there any modern PSUs with 4? Thanks in advance for your help!
  20. Gorgonops

    Proper Mac Plus ROM split HI/LO

    I haven't taken even the slightest look at the Mac Plus schematic to base this idea on, but I wonder if your some-odd-seconds of screen corruption before it clears and proceeds with booting could be that there's something up with the processor reset circuity. Typically computers of this vintage have some sort of timing delay circuit that waits a discrete period of time after power-up before pulling the RESET signal to officially start the CPU running. (Until this point the circuitry typically holds the line as if a "reset button" was being held down, halting the CPU.) If for some reason that circuit is having trouble stabilizing it could be holding the CPU in a halted state for some random period of time. Throwing this out there because I saw something like this on a Commodore PET I was restoring years ago. (Fixed by replacing a bad *ceramic disk* capacitor.) PET used a simple 555 timer to hold reset for about a second after power on.
  21. Mu0n

    Proper Mac Plus ROM split HI/LO

    Also, according to this : pin 5 is the one at -12 V (one space to the right of the 5V according to your picture) http://myoldmac.net/FAQ/MacintoshPlus-Pinouts.php
  22. bibilit

    Mac IIci capacitor damage

    Your board shows signs of battery damage at some point (rusty battery holder) and rust in the board itself. Look under the battery holder, some traces can be damaged.
  23. Mu0n

    Proper Mac Plus ROM split HI/LO

    Yeah, I did check them at the start of the summer when I used to only get a straight sad mac, and they were normal then. I checked them again and I'm getting 11.97V and 5.06V at the very start. The boot sequence was much shorter this time.
  24. Crutch

    Wifi Extension Development Thread

    @ants remind me what compiler you used to build it? Is it possible the linker is including the whole C++ library even though you are presumably even using a tiny slice of it? I am certain you could built it in C++ using CodeWarrior and it would be a fraction of that size. (The FirePower screensaver I recently uploaded the Garden - link in the Software forums - is written in C++, fat binary and under 200k as I recall, compiled with CodeWarrior.). I’m not sure what external libraries you’re using than iconv, but would a CW recompilation be possible?
  25. For the SCSI 2 SD config did you set the vendor and model to the one in the SCSI2SD in a 68k Mac thread, including the spaces before/after? That’s required for the stock drive setup to recognize the scsi2sd. A really easy way to get the drive setup off the iMac is to use sheep shaver with local disk access enabled so you can copy to/from the computer. Make a 1.44 MB disk image, uncompressed, in disk utility, copy the drive setup, unmourned image, copy image to the local computer, write with favorite utility. If I remember I’ll try and upload one to the thread tonight to make it easier. Another thing to check on your Iicis is the caps and batteries. Both are known to leak on these systems whether they’re in use or not.
  26. Storm

    Mac IIci capacitor damage

    Ok lets hope it works out I cannot read anything on some IC's, they seem to have no part numbers on it. For example the UB2-Chip for left sound or the one for the right
  27. Compgeke

    Mac IIci capacitor damage

    Generally as long as it's just green fuzz, you'll be able to clean it off and it'll just work(tm). There are some exceptions, like in a Mac IIcx the cap leakage likes to ruin the power-on circuitry and you'll never be able to turn the computer off again but that's a minor issue. More or less all the IC part numbers are directly on top of the chip. A few are Apple proprietary but those wouldn't be available 2nd hand anyway unless you pulled from another board.
  28. Storm

    Mac IIci capacitor damage

    Ok thanks I will try that. What are my chances that the components still work when they got the green stuff on it? Is there a schematic where I can find the types of the IC's so I can replace them if needed?
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