IMPIP-M5 can't be powered on

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  • mihai_mgd
    New Member
    • Nov 2023
    • 3
    • Romania

    #1

    IMPIP-M5 can't be powered on

    I have a such device from a friend, but it can't be powered on.
    I investigate it and I have some conclusions, please help me to fix it:
    a) the voltage on Q9350 (page 47 from IMPIP - M5, schematic) has wrong values:
    +19V S=Source Pin 1-2-3 - this is OK
    +8.4V D=Drain pin 5-6-7-8 - this is not OK, must be about 19V
    +5.3V G=Gate Pin4 - this is not OK, must be about 19V
    b) the PC starts if I connect directly Q9350's S and D:
    - CPU and GPU fans start
    - power button works
    - I haven't seen yet any image on the screen
    c) with b), if I remove both DDR3 SO-DIMMS modules, then there are some POST beeps (I assume that they are memory beep error, I don't have yet the meaning of them)
    d) on schematic Q9350 is TPC8107, on my main board Q9350 is FDS6679AZ, they seem to be very similar -If matters

    In this time I will continue to investigate the issue

    P.S. I know that this is an old post, but I think that it is better to post here instead of opening a new post.
  • mihai_mgd
    New Member
    • Nov 2023
    • 3
    • Romania

    #2
    Re: IMPIP-M5 can't be powered on

    Q9350 is defective, I am going to replace it

    Comment

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