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agent_js03

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Everything posted by agent_js03

  1. agent_js03

    SCSI2SD and Apple IIGS?

    So the drivers for 5.0.2 and earlier won't work for that? I do have plenty of RAM, but I would have to find some way of getting 6.0.1 on 800k prodos floppies... I don't have a cable for adtpro. I guess I could write them from my lc iii.
  2. agent_js03

    SCSI2SD and Apple IIGS?

    I took one of them apart and saw that the teeth had been broken off of the second gear on the eject mechanism. That particular one was apparently made of a more brittle plastic than the others. I can still use the floppy drives, it is just a pain because I have to stick a pin into it in order to manually eject. It kind of disrupts the functionality. Plus the floppies that were given to me with the IIGS are 30 years old and a lot of them are starting to fail.
  3. agent_js03

    SCSI2SD and Apple IIGS?

    Is there a better solution for mass storage? That is all I am really after, mass storage. My floppy drives don't work that well. They won't eject. As of right now I was able to format the SD card and even copy System 5.0.2 over to it and started booting from it. But for some reason the SCSI driver in System 5.0.2 does not work. I did install it, but it doesn't recognize the drive. So basically it doesn't boot all the way up. I am tempted to move in the direction of the floppy emu from big mess o' wires, though I hate to spend that much. Maybe once I sell my Apple IIe then I will be able to justify such a purchase and will have enough from the sale to get it.
  4. I was given a full Apple IIGS system complete with an ImageWriter II printer. I have gotten this printer working from the IIgs, printing from appleworks. When I connect it to my Macintosh SE, I select "ImageWriter" from the chooser, and then when I write something in AppleWorks and try to print, it will say "printing" or something like that and then nothing will happen. Even when I press the select button on the printer, nothing comes out. Am I missing something? I have it connected to the printer port and everything. I couldn't find any "ImageWriter II" software, just ImageWriter (maybe I am looking in the wrong places).
  5. agent_js03

    Printing to a Imagewriter II from Macintosh SE

    I got it working! Apparently I was using the wrong cable. I have two din8 serial cables, one of them works, one doesn't. The one that doesn't has two arrows on the end pointing in opposite directions. The one that does just has one arrow pointing toward the end of the cable. Weird...
  6. agent_js03

    SCSI2SD and Apple IIGS?

    Cool, so all I have to do is configure a few 32mb volumes, then initialize them from my LC III, and then I should be able to just format it in ProDos from my GS using Copy II plus right?
  7. agent_js03

    SCSI2SD and Apple IIGS?

    So then is it just a matter of writing the image directly to the SD card? I don't have to worry about initialization or partitioning?
  8. agent_js03

    SCSI2SD and Apple IIGS?

    I am pretty sure it is the Apple II high-speed scsi card. I will check when I get home. It looks like the picture anyways.
  9. So about two weeks ago (or so) I bought a Macintosh Color Classic from a lady on Craigslist. She told me that it worked, and poor, gullible me believed her. She met me outside to make the deal and it looked like a shady part of town so I was reluctant to ask her to test it. I guess I should have figured from how eager she was to sell it for a price way lower than she asked for it. Oh well... to make a long story short, I brought it home, plugged it in, plugged the keyboard and pressed the power button. Nothing. I ran through the usual list of things you are supposed to do: cleaned the contacts on the front of the board, cleaned the board itself (I used a compressed air can and some cotton swab tips with 90 percent rubbing alcohol). I looked online and found out that the number one reason these things fail is bad capacitors. I looked at the caps on the logic board and sure enough, there was leakage galore. That must be it. So I ordered tantalum capacitors from mouser electronics to replace them. I want to mention that in the meantime I was able to turn the computer on without the logic board in; the fan turned on, the hard drive spun up, and the power light came on, but nothing more. I also tried plugging in the board while the machine was in this state. Nothing happened except a faint high pitch noise. Two weeks later (today) my capacitors finally arrive in the mail. Man those things are tiny! I solder them in place where the old capacitors used to be. Did one last dust blast from the air can, plugged in the board, plugged in the keyboard, pressed the power button. Nothing. I took out the motherboard again, powered on the machine, then plugged the board in. This time, I heard a sort of coughing sound from the speakers, and I could hear the floppy drive whirring up and down repetitively. Something is different obviously... I will be hopefully posting pictures later. I am wanting to know if there is anything else that I might be missing. On capacitor C3, I noticed some darkness in the copper underneath the green silicon layer; these are the leads that you can see very clearly if you look at a picture of a color classic board, one leading to the 103490 chip and one leading to the blue 101 thing below it. It is possible that the capacitor leakage had caused some corrosion and broken those leads, but I am unsure. Down by C9 some of the green film had chipped away; I glued down as much of it as I could find, but I don't think that it necessarily disturbed any of the underlying leads, just exposed them. I am wondering if there is anything else I could be missing. Perhaps I have bad solder joints on some of the capacitors. Perhaps there is something I need to do with the PRAM battery. Perhaps there is something wrong on the analog board. I don't think any of the pads lifted when I was desoldering, at least not that I could tell. I cleaned that board as best I could too. Any tips would be appreciated; I will do my best to provide photos of my work.
  10. agent_js03

    Macintosh Color Classic repair adventure

    Hmm, no I didn't recap the analog board. I guess that would be the next logical place to look. I think the only way I can slide that thing out is if I am able to somehow unplug that scary looking red cable that connects to the CRT. Any clue on how to do this without killing myself?
  11. agent_js03

    Macintosh Color Classic repair adventure

    why, because of a little humor? I have installed a custom power switch using as connections the two points that were in the picture provided by macallee69 provided. When I press it, about 50 percent of the time it chimes and boots up, the other 50 percent of the time I just get a grey screen. I am thinking of shelving this thing for a while and maybe I can do a real fix in the future.
  12. agent_js03

    Macintosh Color Classic repair adventure

    ehh... she loves me.
  13. agent_js03

    Macintosh Color Classic repair adventure

    Hey macalle69, The continuity there was definitely missing. I patched it as you did in the picture, and now when I switch on the CC it immediately turns on without the power button, and when I go to shutdown it doesn't power all the way off until I press the power button. I suppose this is acceptable for functioning, but could this mean something else is wrong? Also sometimes it will just come on without a chime and there will just be a grey screen, which is a bad thing. At least I know if I want to install some kind of a custom power button, I know how to do it. It feels like I am getting so close!
  14. agent_js03

    Macintosh Color Classic repair adventure

    Thanks techknight. mrpippy and EkriirkE have good advice. I was able to check a few traces successfully using the dimension method and holding it up to light, until my wife opened the garage door and called me a nerd and told me to come inside. I will continue this over the weekend.
  15. agent_js03

    Macintosh Color Classic repair adventure

    Ok, so assuming that "B" refers to the second group of connections on J13, and the pin numbering alternates top to bottom, then yes there is definitely continuity between pin 26 of that chip and pin 14 of J13B.
  16. agent_js03

    Macintosh Color Classic repair adventure

    Hi techknight, what I meant was this. I know that J13 is the edge connector, I don't know what the 'B' means, or what pin 14 means (14 from the left? from the right?) so I wasn't sure how to interpret your post. That is what I meant when I asked for more detail; what I was really asking for was clarification.
  17. agent_js03

    Macintosh Color Classic repair adventure

    Does anyone have tips on how to trace vias? Traces are easy as they are on the same layer of the circuit and you can just look at them and see. Vias are hard because you can't see where they are going; they could be going to any layer of the printed circuit. I have thought about taking a picture of both sides and lining it up somehow, but that seems like it wouldn't be too helpful. I am wondering how other people have detected bad vias in their repair projects.
  18. agent_js03

    Macintosh Color Classic repair adventure

    Hey techknight. I tested PSW to pin 24 and got a beep, connection is good there. I wasn't sure of your numbering system for J13. I touched one end of the multimeter to pin 24 of the chip and then ran the other end along the J13 edge connector. I got a beep for one of the pins. When you flip it over and hold it so that it is facing you, it is in the middle group of pins, the sixth one from the right. I doubt that this is the one that you were mentioning. Forgive my ignorance... if you can provide a little more detail in that regard maybe I can give you a better answer.
  19. agent_js03

    Macintosh Color Classic repair adventure

    Ah, techknight! At last you have come to my aid. Yes, When I start up the computer I can see the clock seconds ticking, and with the new clock battery it will keep time even after it's been unplugged. So that's all well and good. My only guess is that there is something up with the connection between the ADB and the chip. I suppose it is possible that there is also an interruption somewhere in the power-on signal somewhere between that chip and the logic board connector. But from what I've heard, if there is any connection interruption of this sort, it is most likely somewhere around that chip near the ADB port. Here are photos of that area: Top view Bottom view I would like to connection chase but I have no clue how to determine which vias go where on the other side of the board. The capacitors, etc are so dense and there are multiple layers to this circuit so I have no way of knowing. Any tips? I have a multimeter that I have used on some of the traces on top of the board and so far all the traces that I have tested have been OK. It is possible that there is just a bad soldering connection on that cap there. I did a bad soldering job before and had to redo it before the machine would even boot up at all. Here are the other parts of the board where I put new caps on, if they are any help. Honestly, at this point if I could see the wiring diagram for the analog connector I would be perfectly happy to just wire up a pushbutton to the inputs for the power on signal and just have a custom power on button without even dealing with the soft power on. I don't know if this is a safe idea or not. I just want this thing working... Thanks in advance!
  20. agent_js03

    Macintosh Color Classic repair adventure

    Hey everyone! Major update. Late this morning I had a free moment so I desoldered the tantalum capacitors and removed them since they were soldered on so badly. I then proceeded to solder on some electrolytic "tin can" capacitors instead, which were a breeze to solder on compared to the tiny tantalum ones. I also did the patch that bibilit posted about earlier, even though I didn't think it would be necessary. I plugged it in, switched it on, and pressed the power key. Nothing happened. I was feeling disappointed when I did remember something that I read about in another forum. It is generally not recommended (I mentioned it earlier in this thread) but since I had nothing left to lose, I gave it a try. I unplugged my motherboard, turned the classic on, and then plugged the motherboard in. In the past, this either did nothing, or just caused the floppy drive to turn over and over. This time, I got a chime, a grey screen, and the happy mac logo, and then the little mac proceeded to boot all the way up! Naturally, this was very exciting. Up till now I haven't gotten anything from this little machine. Now I had a fully booted up working machine. Sound worked and everything. Runs Mac os 7.5.3. Whoever owned this machine before must have been in the multimedia business because it is loaded with all kinds of graphics and sound software; photoshop, Infini-D 3D graphics software, sound/midi software, the works. I played some of the composed midi files on the speaker and it worked perfectly. So it seems that the motherboard works and everything works, the only thing that doesn't work is booting from the keyboard. I have used this keyboard with other macs and have booted from it, so I am pretty sure it works. I am at a loss as to what could be causing this to not work properly. Is anyone knowledgeable enough about the circuitry in this device that could tell me what part is involved in this? Could it be something on the analog board?
  21. agent_js03

    Macintosh Color Classic repair adventure

    Well the pram battery didn't solve it. I guess I can try removing the solder again and get rid of all the corroded stuff on the pads. Anyone else have any ideas before I give up on this project?
  22. agent_js03

    Sharing files with a Macintosh SE

    Hello all, I have a Macintosh SE that I found for 10 bucks on craigslist back in 2011 when I was still in graduate school. I had to replace the hard drive and a little sensor on the floppy drive, and it has been working great ever since. I still love that little machine. I used to have a powerbook with a floppy drive that I used to write data to 800k floppies so that I could move data to the SE, since the SE doesn't support FDHD. Well now I don't have that powerbook anymore... I have another powerbook that has a CD-ROM but no floppy. I am wondering, however, if it is still possible to share/transfer files from the powerbook to the SE using appletalk. I have a mac serial cable that I could connect the two machines with. Would it be possible to transfer files this way? On the SE, if I open the chooser, there is an option called "AppleTalk" that can be enabled/disabled. If I connect the two machines and then enable it, what might be the next step? What can I do to get this working? Do I need additional software for the SE in order to do this? I would have to find some 800k disk somewhere with it, since I have no way of transferring it otherwise. Thanks in advance for the help.
  23. agent_js03

    Macintosh Color Classic repair adventure

    I borrowed a multimeter from my coworker yesterday. I turned the board over and touched those two contacts (C56 and the via by R36, as in the picture) and the multimeter beeped. I set the MM to measure resistance on the lowest setting, and touched these two again, and resistance was almost zero. This seems to indicate that the via must be good, or that there is a direct connection between these two points. Am I right, or missing something? Also I tested the other two traces that I thought had been too corroded by the electrolytic fluid; apparently there is still a connection on them, they are not too far gone. I don't know if there is any other trace rot, at least I don't know how to look for it. I may just have to wait for the pram battery to come in. If anyone else has recommendations, let me know.
  24. agent_js03

    Macintosh Color Classic repair adventure

    Hey bibilit, that is interesting. I am wondering though, first of all, how does one determine that a via is bad, and second of all, once the determination is made, how does one know where the other end of the via is? The circuit has multiple layers. It seems like it would be impossible to find out. Does that trace just happen to be one that goes bad a lot of the time?
  25. agent_js03

    Macintosh Color Classic repair adventure

    I tried again turning the machine on after the wash, no go. I have ordered the same model pram battery from amazon. When it gets in I will replace it and try again before I go connection chasing. I know y'all have said that the pram shouldn't make a difference, but I have heard too many stories online about people who replaced the pram batter and magically everything started working.
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