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Ultra 5 boot issues--no video, garbage on serial console

Discussion in 'Sun Hardware' started by pentconf, Aug 26, 2006.

  1. pentconf

    pentconf Guest

    My Ultra 5 didn't come back after a power blip. It powers on, but
    nothing displays if I attach a monitor. If I attach a serial console
    with the correct settings it spits garbage (the terminal settings are
    correct) Tried the Stop N, Stop D stuff, same result. No POST lights on
    keyboard. Tried removing/reseating the hardware, same result. Read a
    little bit about nvram issues, but didn't see this as a symptom, is it?
    Or did the power blip fry something?

    pentconf, Aug 26, 2006
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  2. pentconf

    llothar Guest

    If you are sure your Nullmodem cable is correct then go and get a new
    In this case the U5 CPU or Mainboard is dead. Had this with another U5
    llothar, Aug 28, 2006
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  3. Hi,

    If you have a multimeter, verify all voltages from the PSU.

    You have to surf/Google around to find the needed voltages, if you can't
    find them let us know I can check on a U5 here then.

    Michael Laajanen, Aug 29, 2006
  4. pentconf

    john o goyo Guest

    You can also find the values in Sun's Ultra 5 service manual. I also
    suggest checking
    voltage levels -- the power supply in my Ultra 10 died a while ago with
    similar results.
    john o goyo, Aug 29, 2006
  5. Have you tried other speed/parity settings anyway?

    Does the garbage interact with the keyboard? (do you just get a single
    stream of stuff, or pieces over time?)
    Darren Dunham, Aug 31, 2006
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