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  1. M

    CC1 and CC2 ROM chip compatibility

    Hey, did this work?
  2. M

    Performa 550 won’t boot (bad logic board)

    With ROM removed, address lines are "walking the bus" but with ROM installed, there is no activity on the address lines
  3. M

    Performa 550 won’t boot (bad logic board)

    All lines between cpu and rom are good, no broken traces
  4. M

    Performa 550 won’t boot (bad logic board)

    Through probing I found out that the 68030s reset pin is being held high indefinitely. Still don’t know what’s causing this.
  5. M

    Performa 550 won’t boot (bad logic board)

    That’ll be an issue for another time. Right now I’m not getting anything on the screen and no chime
  6. M

    Performa 550 won’t boot (bad logic board)

    Video of boot attempt: https://drive.google.com/file/d/1JUuOsrfCgbghXfd5S4OW6uJhquum3Sss/view?usp=drivesdk
  7. M

    Performa 550 won’t boot (bad logic board)

    I have a performa 550 that doesn’t boot. When I hit the power button, the led comes on and the fan and HD spin up, and there are 7 short beeps or clicks that I assume are from the hd, but there is no chime and no picture. I know the problem is in the logic board as it works with a color classic...
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