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Found 24 results

  1. I got this nice looking Colour Classic, just nice looking though, the AB in not really healthy. The volts are fluctuating, the 5v ranges from 3 to 5, 12v from 6 to 12. I need to look for the schematics. I'll move the the Compact section to seek for help for the diagnostic of this guy best PF
  2. Hi all, I have a faulty PSU in my mac classic, despite my attempts it still does not work I noticed that the AC-DC is isolated from the DC-DC part in the board, so do the CRT board downward. So, I have the crazy idea that by removing the transformer and the optoisolator, at this point I could inject the current from an external PSU into the pads where the voltages is supplied to the MB. Pls look at the picture. This could give power to the CRT and the MB. The DC DC it still connected but it would not, in my opinion, create problems. The question is: wo
  3. Hello all, new to the forums I have a Mac Classic II, which had its logic board recapped, bringing the computer to life. After doing so, I decided to recap the analog board. This killed the mac. All of this was done several years ago, and I recently decided I want this machine to work, rather than gather dust. After booting it up, I was greeted with a startup bong and a VERY bright horizontal line. After copious amounts of searching, this is generally attributed to the TEA2037A Horizontal/Vertical deflection IC. However, upon reopening the mac, I actually found that CF4 had
  4. I tend to swap out the electrolytics in a recap and leave the film or metalized paper caps alone if they are good. Some among us have experienced blown filter caps near the power input on the original Macintosh analog boards, specifically these Rifa caps: C33: 4700pf 250VAC Minibox (sometimes found to be 2200pf?) C37: 4700pf 250VAC Minibox (sometimes found to be 2200pf?) C38: 0.1uF 250V Minibox The stock Rifa caps all appear to be metalized paper capacitors. A directed replacement for C33 and C37 would be the KEMET PME271YA4470MR30, also metalized paper. But
  5. 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 tricky for me. In my haste, I thought it was a Rocket because of the onboard sim slots and lack of output in the back. What could it be? I have yet to receive the parcel. Thanks!
  6. Hello Can i try putting a hard drive from a powerbook 145b to a duo 210?
  7. Yes, even the Macintosh 128k/512k KEYBOARD needs to be recapped: But does it really need to be 63V? Here's the keyboard schematic, with the 1uF cap showing in the upper right area nearest U2: And U2 is the 74LS123 shown here: Sure, I can find a Mouser $3.23 replacement, but why is the stock cap rated at 63V? Is it because people might be stupid and connect the keyboard to a phone jack, or is there some other reason? The reason I even wonder about this is because if lower voltage 1uF caps can
  8. I recently picked up a PowerBook 180c that boots up and seems to work perfectly, with the exception of the floppy drive. It will read the floppies just fine, but the Finder always shows the disk locked icon, regardless of whether the disk is write-protected or not. I took the floppy drive out of the computer and the mechanism appears to be bent in such a way that the left side of the floppy is higher than the right side when it is seated in the drive, which seems to be preventing the write protect micro switch from triggering. I confirmed this by pressing on the left side of the disk when it w
  9. I made a new walkthrough video about replacing all the electrolytic capacitors on the MicroMac DiiMO 50MHz 68030 accelerator for the SE/30. I explain my choice of Niobium Oxide capacitors over tantalum, show the replacement, then boot and run benchmarks. The SE/30 shown has a recapped motherboard, recapped analog board, and SEASONIC PSU. The video is 4K but if you're a Mac user who loves Safari, you'll need Chrome to view it in 1440p or 4K. Also, it was sadly during the making of this video that my Epic Blunder occurred. My humble thanks to all of you who are so kindly trying to help me in
  10. Here i have a Macintosh SE/30s that i found on the side of the road with a bunch of keyboards. Only one of them is working but i need to save up for a Floppy Emulator drive to really get this going!Post what you got below! http://www.agoraroad.com/macforum/vintage-computers/what-vintage-macs-do-you-own/
  11. Hello! I recently purchased a broken Color Classic off of eBay and it arrived in the mail a few days ago. The capacitors on the logic board are leaky and I ran the board through the dishwasher to get all of the goo off. After doing this, I managed to get the computer to work and I plan to recap the logic board in the next few weeks. However, the sound suddenly stopped working when I booted it up today and at first I thought that the volume was just turned down. After turning it up, there was still no boot chime or any audio of any sort. Then I realized that the Color Classic was pr
  12. Has anyone tried to fit a Turbo 601 66 MHz, in a socketed 040 Turbo adapter, in a Mac IIcx? I like to try it, but I don’t know what to expect? Perhaps smoke or explosion? Or is there slim a chance of success? /K
  13. MacSE

    Macintosh Plus

    Just picked up a Macintosh Plus for $20. It came with keyboard, mouse, an external SCSI hard drive that doesn't work, and a Targus carry case. It works fine as soon as soon as I insert a boot disk. It hasn't yellowed from exposure to UV light, and doesn't need to be retrobrighted yet. I couldn't pass up such a good deal!
  14. Good afternoon all, I have acquired two Mac Plus units of which neither want to boot. I've started with the usual logic and analog board cleaning and recapping to no avail. The most promising combination of boards only achieves a white horizontal line accompanied by noise from the speaker, as seen in this video: Other combinations of board only achieve a flupping noise at various speeds with a blank screen. Nothing seems particularly broken on any of the boards, except scorching underneath the 5W 1Kohm resistor on both of the analog boards, both of which tested open and ha
  15. Hi everyone. I recently pulled out my Macintosh Classic from the closet so I can play around with it. I acquired it on a eBay auction a couple of years ago. The Macintosh has a 500 mb hard drive with 4MB of RAM installed. The little machine runs great but lacks sound. No startup chime or anything but boots right into System 7.5 that I installed fresh less then an hour ago. I go into the Control Panel for sound and it still plays nothing even though the volume is on max. I've plugged in my external speaker and it makes very little sound. I've even tried out the Control Panel for sound as well w
  16. So, I was pulling out my favorite SD, my FDHD model. I haven't used it at all this month because I've been so busy with other projects. And now, an old problem I thought was gone is back. Essentially, I flip the switch and it doesn't start up right away. Rather than describe the symptoms I'll attach a dropbox link to the video of me showing it https://www.dropbox.com/s/vqydlzlqikiyyei/V_20170412_191041.mp4?dl=0 So, here are the details that are hard to see in the video. The flyblack sounds like it's clicking (not audible over speaker popping) and the hard drive spins up and down, but g
  17. I found this under my tree
  18. Hello everyone, I recently bought a Mac Plus on eBay, with a power cord. It did not come with a mouse or keyboard, and the seller priced them more then the computer itself. Thankfully, it's PRAM battery had been removed, even though the contacts were slightly corroded. The first time I tried to start it, it came up to a sad Mac with error 038000 on it. I checked and reseated the RAM, to no avail. I recently ordered 4x1 MB ram sticks, and when they come I'll keep you posted. I got it from the state next to mine, so shipping was not a complete killer. It unfortunately is missing the scr
  19. I got a new motherboard for my Mac classic it has no battery leakage But I still get a checkerboard pattern on the screen Please help Thanks in advance
  20. Does anyone know the pinout of the mac plus logic board to analog board cable? I was wondering if it used black and white composite video.
  21. Hi Folks! I've finally decided to post details about my "vintage" mac setup on the Internet! I say vintage with quotes, as I don't really know if a 9600 would count as vintage... I also don't know if I'd call it a conquest, it's more a collection I've built up starting around late 90s.. It's a little.... Crazy. But I love it! If I can think of one community that would appreciate these specs, I think this one would be it.. I will try to post pictures later on this week, maybe tomorrow after work! For now, take a peek at this: --- BEGIN SETUP DETAILS --- Base System:
  22. Hello all I've recently acquired a Daynaport E/si30 PDS Ethernet card for my SE/30, but I have no drivers for the Ethernet card, I've spent days searching the internet, but any promising links all seem to have died long ago, I've tried the mac museum but the DaynaPort-installer-7.x.x link is also dead. Is there anyone who could email me the needed files or possibly point me to an active link to download the driver software any help is greatly appreciated Many thanks, Josh.
  23. The Macintosh SE I acquired about 2 years ago seems to be having intermittent issues, that seem to have gotten worse since I've owned the machine. Basically, sometimes when the machine is powered up, it doesn't chime and instantly throws a Sad Mac error. Other times, the Sad Mac will appear randomly while the machine is running. My best guess to the cause of this issue would be bad solder joints on the logic board (as slightly jolting the machine seems to make it work again), but I'm not really sure. Bad contact with RAM could also be a problem, as the contacts look to be of questionable integ
  24. Doing some work, I got a Raspberry Pi to run on solar batteries and partially charge up an external battery for night time use; adding a few more solar cells would fully charge the battery and run the Raspberry Pi 24/7. Currently the solar panel is foldable into a neat package the size of a small paperback novel. But this got me thinking. A few years ago at a Google/Linux conference which I spoke for the Brooklyn Linux User's Group, there was talk and demonstration of the "1 child/1 laptop" machine (aka the $100 laptop) for third world countries. It ran off a tiny battery, cranked generato
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