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HP Laserjet 4M+

Discussion in 'Electronic Repair' started by Rubbishrat, Nov 18, 2004.

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  1. Rubbishrat

    Rubbishrat Guest

    This is a great printer when it starts but it wont start up without a lot of
    hassle. basically switching on produces a brief flash from the LEDs and the
    internal fan under the top grille can be seen to spin momentarily but then
    the machine goes dead. If I replace the PSU with a spare, the machine will
    spring to life ONCE only, next time it's switched on the original symptoms
    return and the only way to make it start is to put the ORIGINAL PSU back.
    Then the machine will start and work quite happilly all day until next time
    it's switched on. Its driving me mad. Obviously its not the PSU, so what
    else could it be?, are there any printer experts here that have come across
    this before? Any help appreciated.
    Thanks, Pete
  2. mike

    mike Guest

    Maybe this will help 4L / 4ML / 4P / 4MP.html

    Return address is VALID.
    500MHz Tek DSOscilloscope TDS540 $2200
    Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121
    Bunch of stuff For Sale and Wanted at the link below.
  3. Rubbishrat

    Rubbishrat Guest

  4. k_teppo

    k_teppo Guest

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