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phreakout

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Everything posted by phreakout

  1. Try opening up Keychain Access (Application Folder > Utilities Folder), Trash the key pertaining to your Airport password in the System Keychain, then reconnect to your Airport, it'll prompt for the password, then type it in. Voila! Sounds like also the PRAM battery is getting old or low. You may want to see about replacing it, if possible. 73s de Phreakout.
  2. phreakout

    Pro tip for recapping boards

    I can confirm that this does work, after recapping 2 SE/30 boards. I would probably go so far as to say it may be far more safe, compared to using the dual pencil soldering iron method. No pads are ripped, didn't see any liquid leakage, though. One note, when cutting, if you can't get the tool to cut on the indent of the cap, you can safely cut a bit above that. Looking inside the cut cap, I see 2 rubber discs (possibly seals) and there appears to be a mostly solid substance used as the electrolyte. Not sure what the chemical or substance is. Other than that, it is the most clean and pain free method I've tried so far. YMMV. Further study required, please. 73s de Phreakout.
  3. That's great, Uni! And even rare, a significant other who shows interest! This can even open doors for both of you to careers in repairing electronics, as well. My dad, a licensed electrician for over 40 years, taught me how to solder when I was about 8 years old. I later took electronics courses at a vocational campus, while still in high school, and that allowed me to gain further experience up to Series/Parallel Resonance circuits (the basics of how radio and TV tuner circuits work, how to diagnose and how to repair). I was trying to advance further into digital logic and control circuits 11 years ago, but I ran out of funding to continue taking classes; that, and life got in the way. Oh well. 73s de Phreakout.
  4. phreakout

    Strange SE/30 Goings On

    Is that a Zip 100 or a Zip 100 Plus? If the first, I would check to see if termination is enabled. If the latter, the 100 Plus should enable termination automatically. Next, make sure that the Zip and EN/SC adapter have different SCSI ID numbers. Finally, try turning both external devices on first, then power on your Mac. It should boot normal from there. 73s de Phreakout.
  5. phreakout

    Strange SE/30 Goings On

    Correction: System 7.1 through Mac OS 7.6 Compatibility With Macintosh Computers. The SE/30 DOES NOT utilize system enablers, no matter what version of System 7 you run. Try downloading the System 7 Tune-Up version 1.1.1 from the Old Apple software downloads page: Here, and this is the "Readme" file, concerning the Tune-up. 73s de Phreakout.
  6. phreakout

    Strange SE/30 Goings On

    Correct me if I'm wrong, but didn't some of the early versions of System 7 have issues with disappearing or missing folders and icons? And wasn't there an extension or enabler issued to fix that problem? 73s de Phreakout.
  7. phreakout

    ZipMacPLUSā„¢

    Alot, but Trash, can you start posting in "I-Can-Haz-Cheezburger" speak? It makes for a more interesting and entertaining on your posts, imho. 73s de Phreakout.
  8. phreakout

    Capacitor Replacement Thread . . .

    Fyi, I am trying the cap-clipping technique and so far it's not that bad. My hats off to using this method, but please use your best judgement. Not all boards are made equal; there can be hidden severe damages due to age and/or corrosion. So far, one board is coming through with flying colors. 73s de Phreakout.
  9. phreakout

    Pismo G3 - won't return from sleep mode in 9.2.1/2

    In addition, can you boot it into Open Firmware mode and tell me what version of ROM is running? IIRC, the last firmware update put it to version 4.1.8f5. I think that version may fix the sleep issues; reading the descriptions tells me the update improves overall stability and performance issues. Whilst in there, try also typing in the following incantations (minus quotes): reset-nvram [Return] set-defaults {Return] reset-all [Return] If the firmware is not up to 4.1.8f5, do a search for the update on Apple's support pages, reboot into OS 9 and install the update. To recall, Apple shut off software updates for anything earlier than OS X Tiger, so a manual search and install would be in order. 73s de Phreakout.
  10. phreakout

    ZIP100 Plus!

    If you do in fact have a Zip 100 Plus external drive. it means that it will accept both SCSI and Parallel printer port as a means of connecting to a computer. One port is for SCSI, the other is for the parallel printer port on older DOS/Windows PCs. So far, it appears that it may have automatic SCSI termination or the termination is enabled by factory default. After doing some research on the Apple Discussions forum on Apple's website, someone posted having the same type of drive and mentioned it being "self-terminated". So that means it has termination enabled as a factory default. My advice if you have additional external SCSI devices to daisy-chain together, make sure the Zip drive is the last one on the chain. It shouldn't matter which SCSI ID number (5 or 6) that you chose, as long as you don't assign that same number to another SCSI device on that chain. 73s de Phreakout.
  11. phreakout

    SCSI and termination.

    Your welcome. I guess that's why IDE replaced SCSI as a standard for hard drives. Technically, they both are so alike. But who wants to monkey around with confusing DIP switches and settings for these kind of drives? 73s de Phreakout.
  12. phreakout

    SCSI and termination.

    markyb86, The reason why there are terminators on SCSI is due to the fact that there is such a strong signal sent down the wire. When it reaches the other end, if nothing is there, it will bounce the signal back to the source (it echoes). It's almost like how echoes reflect off of the sides of mountains. Without a terminator, you will experience a variety of symptoms from "ghosting" (the icon for that SCSI drive appearing and disappearing repeatedly), "mirroring" (the icon shows up twice, one below the other) or no device at all. The terminator acts like a shock absorber for the entire chain. One thing to remember about SCSI is that you can "daisy-chain" devices together: Mac's SCSI port<===>SCSI device<===>SCSI device<===>SCSI device<===>etc. This is why there are at least 2 SCSI ports on a SCSI device. SCSI, offers up to a handful of devices you can link together. But also in order for a successful set up, you must have assigned one SCSI ID number per device. Here's how it breaks down: SCSI ID #0: Reserved for the Mac's first internal hard drive SCSI ID #1: SCSI ID #2: SCSI ID #3: Generally reserved for internal and external CD drives SCSI ID #4: SCSI ID #5: SCSI ID #6: SCSI ID #7: Reserved internally for the Mac (not allowed to use) Regarding SCSI, according to tech writers David Pogue and Joseph Schorr, there are "The 3 Rules of SCSI": 1.) Termination: Typically, the Mac's internal hard drive will have its terminator enabled by default. Externally, regardless of what the SCSI device is, you must have a terminator installed on the last device on the chain. Now, some external SCSI devices may already have termination installed and (depending on the manufacturer) there may be a switch you can adjust to turn the terminator on or off. Also, some SCSI devices may have "active termination" built-in, where a circuit will turn on or off termination automatically as needed. 2.) SCSI addressing or ID number: Each SCSI device must be assigned their own number and you can't share that ID number with another SCSI device. The physical order of devices can be independent of their ID numbers and the last device on the chain doesn't have to be the highest or lowest number assigned. However, Apple recommends you give higher numbers to the devices you use most frequently and lower numbers to devices used less frequently. 3.) Cabling: Keep the cables as short as possible. You're allowed up to 18 feet (6 metres) total, but you must subtract from that figure the amount of cable inside an external device. Finally, the quality of the cables make a huge difference in the successful maintaining of SCSI. So if you can, buy cables from a name brand you can trust. 73s de Phreakout.
  13. phreakout

    Capacitor Replacement Thread . . .

    Amen to that. In a pinch, those caps will work. Don't know if they're any better than SMD orange colored tantalums I use (the same ones that trag uses). You'll just need to make sure you trim the leads short enough and make sure you install them in the right position: + to +, - to -. Duh. 73s de Phreakout.
  14. phreakout

    Capacitor Replacement Thread . . .

    I agree. Although, I am finding that it may be better to try cutting the old caps off, like what Mk.558 has posted. I agree as well. But to be more gentle on the board, use a small wire brush kit like this. Not saying to get that exact kit, but one similar to it. That one I posted is uber weak; no stiff strands of wire in that brush, compared to the previous model kit they carried. Also doesn't hurt to use a pencil eraser as well. 73s de Phreakout.
  15. phreakout

    Capacitor Replacement Thread . . .

    Um, on second thought, possibly not. After looking through the GIFs of the schematics, they do show " Apple Computer, Inc." in the lower right-hand corner of each page. It doesn't appear to be a reverse engineer from a 3rd party, like Bomarc Services (http://www.bomarc.org). They currently have both the logic board and analog board dissected and recompiled into their own schematics. 73s de Phreakout.
  16. phreakout

    Capacitor Replacement Thread . . .

    Trash, For those needing further detailed diagnoses, would posting the entire schematics of a machine be allowed as well? I've got a backup of the entire blueprints for the SE/30 if you'd like. Not sure if it would violate 68kmla post policy, though. 73s de Phreakout.
  17. phreakout

    Contrast on Griffin Mac DB15 to VGA adaptor

    DDC stands for Display Data Channel. Using DDC, a monitor can inform the video card about its properties, such as maximum resolution and color depth. The video card can then use this information to ensure that the user is presented with valid options for configuring the display. Btw, I too have the same model Griffin MacPnP with the manual. Plug & Play, across the board for the 0226-PNP is switches #1,2,6,8 in the On position. I also had acquired at one time a Performa/Power Mac 6400/200 and had bought the the video adapter in that same week. I had set it for Plug & Play and it worked on pretty much any SVGA-equivalent monitor I hook up to it. Now, I've got the same adapter working on my Power Mac 7500 with the same results. 73s de Phreakout.
  18. phreakout

    Tricked out, Macintosh SE

    Now, install SSW 7.0 or 7.0.1 and be more compatible with the rest of the world. 73s de Phreakout.
  19. phreakout

    680x0 Super Computer?

    You could probably build a cluster out of retro-Macs, install a flavor of *NIX on each one and use say Ethernet to network them together. Other than that, I can't think of any at the moment. 73s de Phreakout.
  20. phreakout

    Curbside PowerMacintosh 7500/375 (!)

    Nice score! I got mine years ago; had a Sonnet Crescendo G3 500 Mhz. Got it up to 224 MB RAM, but will be maxing that to 1 GB soon. Installed USB (PCI) card, D-Link 10/100 Ethernet NIC and scored an Adaptec AHA-2940 Mac Edition (Ultra 160 LVD/SE) SCSI card. Originally had dual 9 GB drives, but their bearings were wearing out, so I replaced with dual 80 GB full-height 10 K RPM drives. It's screaming fast boot into OS 9.1. Hey CK, which flavor of *NIX would you recommend for my 7500? I'm thinking possibly as a server for web/file applications, maybe even an alternative to Classic OS. 73s de Phreakout.
  21. How much RAM? If you'd like more, let me know. 73s de Phreakout.
  22. Hey, everybody. While I'm in the process of repairing an SE/30 logic board (SCSI failure), I figure now or never would be a good time to post here for reference of this kind of data. Basically, which pins on the NCR/Zilog 53C80 SCSI Controller Chip link up to where on that logic board. I've included my notes for all of this in 3 jpeg files. If you have any questions, feel free to send me a PM. Mods, feel free to sticky this. I'm hoping this will be helpful to those of us doing repair to that model board. 73s de Phreakout.
  23. phreakout

    On switch? (7500/100)

    Salmoneous, I, too, have a 7500. Allow me to help. Obviously as noted earlier, you can use the keyboard to power it up. Depending on the model keyboard, there will be a single, large key with an odd shaped triangle pointing to the left. If you have an Apple Keyboard II (M0487), it's the large button next to the color Apple logo. If it's an Apple Keyboard I (M0116), again, it'll be the largest one at the top. Apple Extended Keyboard (M0115) will have the key at the top right corner, near the Caps Lock, Num Lock and Scroll Lock lights. Regarding the power but no action, I've had this happen before and it occurs when the power management unit is corrupted, usually due to a dead or dying PRAM battery. Check that battery with a voltmeter; it should read 3.67 Volts DC or better. If less than 3.64, I would just replace it. If it still doesn't startup, try powering up without the battery. If still nothing, I have a last resort: 1.) Unplug the 7500. 2.) Remove all the PCI cards installed (if there are any). 3.) Remove the RAM. 4.) Remove the VRAM. 5.) Remove the CPU card. 6.) Add power and turn it on for about 5 seconds, then shut it off. 7.) Add the CPU card, then step 6. If you hear what sounds like glass breaking from the internal speaker, you're almost home free. 8.) Add the VRAM, then step 6. 9.) Add the RAM, then step 6. By the time you try steps 8 or 9, it should produce a normal startup tone. 10.) Add the PCI cards, then step 6. The above procedure is kind of like giving the 7500 a defibrillator; step 7 indicates that the ROMs are alive. Once VRAM and RAM are added back in, now the 7500 can do something useful. Give it try and let me know how it works for you. 73s de Phreakout.
  24. phreakout

    Mac SE/30 to SCSI chip pinouts

    Personally, I'm all for reliability over speed. But if you can squeeze out more MB/s of speed, more power to you. No, what I've posted is for reference. The whole idea is that we can confirm that the chip was bad or put the blame on badly corroded pads/traces. I say, if the latter, you can save yourself the need to swap chips by simply recreating the paths affected. Now, some of you are probably wondering how I was able to map all that out. Well, I had help. Someone, a while back posted somewhere on this forum the complete schematics of the SE/30. So that became my reference after I saved a copy for myself. It seemed difficult, but in fact, it's not that bad; there are listed descriptions of which and how many pages are linked together for each connection. But I still took the time to verify using a continuity tester and probing around on a board. Incidentally, if interested in a copy of the schematics, send me a PM. 73s de Phreakout.
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