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  1. J

    Mac LC III don't boot up from a non apple HD

    Hi, I've recently repair a LC III macintosh. It had a 500 Mb Quantum Apple disk, but ir doesn't work. I change the disk with an IBM 1 GB. I tried to install several times system 7.5, and I did, but when I shut down the computer, the HD didn't boot up. I have to start up from a diskette and then...
  2. J

    Macintosh 512 flup or whurp or chirp noise after overvoltage

    Hi guys, I need your help My problem right now it's a "whup-whup" or "flup-flup" noise when the mac is turning on. I'm going to tell you the story I bought a macintosh 512k with a dove MaSnap (scsi and memory) expansion card. I'm an european 220 V user and the Mac Power Supply is 110 V. I use...
  3. J

    Problem with the analog board in a Mac512ke

    Hi, I'm a vintage macs loving and I'm very proud of fix a lot of 8 different classic macs (reading the great books of Larry Pina!!!). I have skills in soldering and I'm learning about electronics by practice. Until now, I have a high degree of success!! until now. I'm the owner of a 512Ke that...
  4. J

    Mac SE video problem and battery corrosion

    Hi Everybody I'm learning to fix old macs, and this time I work in a very well looking SE. The problema was a tinny brilliant unique vertical line in the middle of the screen. I thought that the problem was the conventional one, related with a bad solder or capacitor in the analog board...
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