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Found 11 results

  1. Hello, Looking for some repair advice. I have a Sony 2MB Floppy drive model MP-F75W-01G that will not read, write or initialize a disk. I've disassembled it to clean and lubricate, however can't get it to function. Is there a procedure for R/W head alignment, or something else I'm missing? Thank you Rick
  2. Hello everyone, I'm new to the Classic Mac refurbishment game. I'm in need of schematics for the analog sweep board p/n 630-0525. It's the US 110V version. Any help would be much appreciated! Rick
  3. I'm in the processing of diagnosing a floppy drive on a Classic undergoing repair that fails when trying to initialize a disk. I figured it'd be good to see if the disk was any good so I pulled out my Classic II that I recapped last year: Super! Well, let's not ruin the morning, how about the other Classic that's recapped: What an enjoyable time! It's been hot here so I'm wondering if something came unseated. I haven't cracked open the cases to inspect further yet, just figured I'd jump on here and vent first.
  4. I thought I'd post this here to perhaps help some. I have a Classic II which worked OK, but with only a faint sound. So I thought I'd recap, but only those caps I guessed were involved in sound. Started with C11, C12, C14 and C15: no help Then C9: no help After I changed C4 (47uF), I finally got a loud bong. However, I lost the mouse pointer Thinking I must have shot C5 and C8 while hot-airing that area to desolder, I changed them too, and I recovered the mouse pointer So everything looked fine, except for a heavy random hissing/whistling of t
  5. I am pretty sure it's correct, but thought it worth checking with someone more knowledgeable than I... https://www.ebay.co.uk/itm/4MB-30-Pin-Simm-Fpm-Parity-9-Chip-RAM-Memory-4Mx9-5V-70ns-Samsung-KMM594000B-7/274302508296
  6. So, I need some help here. I recently got hold of a Macintosh Classic II. It had the whole checkerboard pattern and all. I only remember it booting fine once and then the checkerboard thing happened. So, I recapped the motherboard with nice tantalum caps and I also did part of the analog board (I replaced only the ones described here as well as the two large ones). Yesterday, I put everything back together (after Retr0briting it, of course ;D). To my surprise, the system itself actually booted. However, there's nothing on the screen at all. When I boot it, I hear the chime and later hear a sou
  7. I just read through the CRT guide posted above and most of the talk revolved around the CRT and Analog board compatibility. My question is will the connector from the analog board work with any logic board? I understand that some boards are larger or smaller than others but my question is if they are interchangeable. I read somewhere sometime that an SE can be "upgraded" by putting in a SE/30 logic board (PDS slot size issues may happen). Basically the situation is that I have an SE/30 that I need to recap but I want to see if this Classic II logic board will work in it while I
  8. I got a Classic II with assorted goodies off Craigslist for a good deal, with the only problem being the infamous leaking logic board caps. Not having a decent iron at the time, I decided to clean the board as best I could with q-tips, alcohol, and patience, just to see if the system would work at all. And it did! For a time. But when it came time to properly replace the caps, that's when it all went wrong. Pads and traces starting lifting left and right, with some traces snapping off the pads entirely. I tried different temperatures and techniques, but nothing made it better. In the end, abou
  9. Hi all, I am finally working to recap/restore my Classic II that has been out of commission for the last 8 years, using it as practice to refurbish the rest of my collection. The Classic II had weak sound and stopped booting a number of years ago but I have some newbie questions for the refurbishment process. I purchased replacement capacitors as per uniserver's diagrams, got the case cracked open and proceeded with an initial wash as prep before surgery. My steps were: Wash with water spray 91% isopropyl alcohol, swirly motions in a tub of water spray again with alcohol delicate
  10. On the very first try too! Well, not my first recap job but the first to get a dead machine limping... It's the Classic II I found in the trash a couple of weeks ago. It came up with thick B/W bars and did nothing. While I waited for caps to arrive, I checked out the hard drive, it's on its last legs but I managed to rescue the system, apps and files on it. Then I managed to low level format it with Sliver Lining, and that seems to bring the hard drive back to life. Did the recapping today as soon as the caps came in - SMD/SMT Tantalums and Ceramics. I chose this mix as to something I
  11. This has been on my mind for years, and have never acted on it. But where does it say that an LC or Classic is stuck at 10 Megs of RAM? Most II Series data bus is 32 bits, thus making a 4MB address into 16MB of RAM in 32 bit. But the LC and a couple of others are 16 bits, which would make a 4MB address into 8MB of RAM in 16 bit. Thus the 10MB RAM size in an LC is just in 16 bits. If the bus can be expanded to 32 bits, it increases the RAM size to double! Since finding the Classic II and comparing it to the SE/30, there is very little difference between 16 bit Classic II and the 32 bit
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