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Found 3 results

  1. Hello Recently I got a macintosh classic that have the checkerboard screen issue. When I opened the machine, I saw a huge corrosion mark under the analog board. I thought it would be some leaking capacitors like many macintosh of this model have, I was ready to recap boards. But it's not. Actually no capacitors have leaked, it's the PRAM battery that opened up completely (litteraly). The analog board seems to be fine but the mainboard has been corroded so much that the battery holder has desoldered. I've tried to clean up some of the corrosion with isopropyl alcohol but there's still a
  2. Hello! I bought a Mac 512 that has a problem with the mainboard. When I got the Mac, the ROM chips (low, high) were interchanged and the MAC did not start. I changed the ROM chips and the the MAC started somtimes. Sometimes I got a sad MAC with the error 05FFFF. Sometimes I got no Image and sometime the MAC started up to the disk picture. At every start I do not get a chime. When I put in a disk the picture begins to wooble and then the MAC crashes, sometime there can be heard some sounds. I can not read a disk without crashing. What I did up to now: - Changed the ROM against a ROM from as
  3. Hello everybody, What is the current thinking in regards to recapping boards with orginal caps that work? I^m thinking particularly of the SE, SE/30 and Colour Classic. For the latter two, something is not working, the SE works. My initial thinking was that these machines are over 20 years old and will need new capacitors anyway. Some posters have commented, especially for the SE, that if it is not broken, do not fix it. Is preventative action wise? unnecessary? My second question concerns what should be recapped? I was initially thinking of just getting the mainboard recapped.
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