Recent content by jch

  1. J

    Quadra 605 boot problems

    I’ve been able to at least identify that the slotted RAM causes sad Mac chimes. Since the motherboard has its own RAM, removing the stick of RAM makes the sad Mac chime go away. I still don’t have any video. I do have another Quadra 605 that I can see if swapping VRAM makes the video work to...
  2. J

    Quadra 605 boot problems

    I‘ve got Quadra 605 with motherboard 820-0364-A, and ASTEC AA16251 power supply. I’ve recapped both of these using caps from Console5. The motherboard caps definitely needed replacing and did cause some damage to the -5V trace near C36, which I repaired with a bodge wire going to the -5V...
Back